Automated Data Access

The "API support" for the NEOCC web services is currently limited to some HTTPS GET requests with raw text-based responses. Note that the API is considered as experimental — pending funding availability we hope to be able to offer a more convenient interface at some point. This means that we may modify, change or remove the interface at any moment and without advance warning. In that case, a best effort will be made to update this help page with the new details.

Usage

As mentioned above, all automated data accesses use the HTTPS protocol and the GET method, that is, the request and all parameters are transmitted in the URL. All URLs below should be prefixed with our server URL: https://neo.ssa.esa.int/
Some have parameters, which are represented with the format $param, and explained in a table below.

Parameters reference

Placeholder name Basic data type Explanation Limits / validity
$desig String Designator of an object, written as the name or provisional designation (without spaces). If the object is numbered, the catalog number may precede the string, separated by a space. Examples (without quotes): "2007VK184", "433 Eros". Any in the database for which the relevant data is available.
$orbptype String Used when querying for orbital parameters. It is formed by two values in sequence: first is the type of the parameters, which may be equinoctial or keplerian. Then, a number selects the definition epoch of the orbit: 0 for the middle of the observational arc of the object (which changes only when there are new observations), or 1 for a date close to the present (which changes regularly). One of the following: eq0, eq1, ke0, ke1.
$obscode String Observatory code, location of the observer in the generation of ephemerides. One of the MPC-recognized codes, or 500 for the geocenter.
$tini
$tend		 UTC date/time Initial and final times for ephemerides generation, in the format YYYY-mm-ddTHH:MMZ. Given the maximum precision of the ephemerides generated by the portal (minutes), no leap second effects are considered. Examples (without quotes): "1981-03-25T17:25Z", "2033-08-31T11:37Z". Final time must by after the initial time. Also, undisclosed limitations are placed both on the distance of either date to the present and on the separation between the dates.
$dt Real number Time step for ephemerides generation. Must be positive. Also, undisclosed limitations are placed on the total number of ephemerides lines generated.
$dtunit String Unit for $dt. One of the following: days, hours, minutes.

Note that the possible space in designators like "433 Eros" (or anywhere else) has to be URL-encoded, either as "+" or as "%20". Most browsers will do so automatically if the address is written with a space, but some tools or libraries might not e.g. wget might work but curl could fail in the same system. Please make sure to check this first if the response by the server is "400 Bad request".

 

List of API endpoints

Direct download of list files

These URLs can be invoked directly without any extra parameters. They are equivalent to clicking the Download as TXT button in the relevant pages.
 

All NEA list

URL: PSDB-portlet/download?file=allneo.lst

Output format: the list of all NEOs currently considered in the NEOCC system.

433       Eros
719       Albert
887       Alinda
1036      Ganymed
1221      Amor
1566      Icarus
...
 
Updated NEA list

URL: PSDB-portlet/download?file=updated_nea.lst

Output format: the list of all NEAs updated by NEOCC Orbit Determination system.

# Wed Dec 16 13:00:09 UTC 2020
433            Eros
1036           Ganymed
1685           Toro
1943           Anteros
3199           Nefertiti
...
 
All non-NEA list

URL: PSDB-portlet/download?file=not_neas.lst

Output format: the list of all non-NEAs currently considered in the NEOCC system.

1               Ceres
2               Pallas
3               Juno
4               Vesta
5               Astraea
...
 
Catalogue of NEAs (current date)

URL: PSDB-portlet/download?file=neo_kc.cat

Output format: Catalogue of NEAs including their Keplerian orbital elements computed near the current date. It also includes absolute magnitude, slope and whether the solution has been computed including non-gravitational parameters or not.

format  = 'OEF2.0'       ! file format

rectype = '1L'           ! record type (1L/ML)

elem    = 'KEP'          ! type of orbital elements

refsys  = ECLM J2000     ! default reference system

END_OF_HEADER

! Name, Epoch(MJD), a, e, i, long. node, arg. peric., mean anomaly, absolute magnitude, slope param, non-grav param

433           59600.000000    1.4582731004887473E+00   2.2272733512701395E-01   1.0828461196080177E+01   3.0429635505648662E+02   1.7889716936883204E+02   2.4690411847568200E+02  10.85  0.46  0

719           59400.000000    2.6380216518446669E+00   5.4687053933081919E-01   1.1573305237779948E+01   1.8385475108996818E+02   1.5620775520096404E+02   2.3221737134523869E+02  15.52  0.15  0

887           59400.000000    2.4736574360744057E+00   5.7045803915164739E-01   9.3937530869677239E+00   1.1043270565140003E+02   3.5050733369658093E+02   3.5913093032526398E+01  13.33 -0.12  0

...

 
Catalogue of NEAs (middle arc)

URL: PSDB-portlet/download?file=neo_km.cat

Output format: Catalogue of NEAs including their Keplerian orbital elements computed near the middle of the observational arc. It also includes absolute magnitude, slope and whether the solution has been computed including non-gravitational parameters or not.

format  = 'OEF2.0'       ! file format

rectype = '1L'           ! record type (1L/ML)

elem    = 'KEP'          ! type of orbital elements

refsys  = ECLM J2000     ! default reference system

END_OF_HEADER

! Name, Epoch(MJD), a, e, i, long. node, arg. peric., mean anomaly, absolute magnitude, slope param, non-grav param

433           53787.596518    1.4580835432521406E+00   2.2276791328427886E-01   1.0828984429456007E+01   3.0438974545133703E+02   1.7865619563262618E+02   2.3318089383383580E+02  10.85  0.46  0

719           57084.946722    2.6301388330635138E+00   5.5170043102235866E-01   1.1552989635357225E+01   1.8405336616327708E+02   1.5582286628648245E+02   6.0032354630888491E+01  15.52  0.15  0

887           57693.321453    2.4788736594268976E+00   5.6709110177052724E-01   9.3560364997778525E+00   1.1054624183659317E+02   3.5034400268659255E+02   3.2443439521920629E+02  13.33 -0.12  0

...

 
Catalogue of NEAs orbits in equinoctial elements (current epoch)

URL: PSDB-portlet/download?file=neo.ctc

Output format: Catalogue of NEAs orbits near the current epoch in Equinoctial elements, including information about uncertainties and covariance.

format  = 'OEF2.0'       ! file format

rectype = 'ML'           ! record type (1L/ML)

refsys = ECLM J2000     ! default reference system

END_OF_HEADER

433

! Equinoctial elements: a, e*sin(LP), e*cos(LP), tan(i/2)*sin(LN), tan(i/2)*cos(LN), mean long.

EQU   1.4581174135338677E+00   0.186441653563893  -0.121974870935707   -0.078305439468740    0.053388284267973  345.956637648262

MJD     60200.000000000 TDT

MAG  10.898  0.460

! Non-gravitational parameters: model used, number of model parameters, dimension

LSP   0  0    6

! RMS    2.41571E-10   1.23865E-08   1.28570E-08   1.78116E-08   1.63354E-08   1.76473E-06

! EIG   1.34319E-10   5.48355E-09   1.00514E-08   1.49343E-08   1.93113E-08   1.76478E-06

! WEA   0.00006   0.00341   0.00647  -0.00065  -0.00157  -0.99997

COV   5.835640568717222E-20  4.854908078971300E-19  2.165862093772789E-19

COV   5.916002304855134E-21 -4.076286369443925E-19 -1.807912996611898E-16

COV   1.534262669216361E-16  6.741940846267419E-17 -8.102730767300851E-18

COV   3.198677789108330E-17 -1.063035140230333E-14  1.653012661461987E-16

COV   3.289519557173609E-18 -1.058099441148523E-17 -2.015917170464428E-14

COV   3.172533775864931E-16 -7.375803696923924E-17  2.039726181170078E-15

COV   2.668449233815220E-16  4.890098873306963E-15  3.114288914088780E-12

NOR   5.537299040936731E+19  1.597294793532500E+17  1.712419206874290E+18

NOR  -1.567410832016468E+17 -1.893464519948348E+17  1.524441735853036E+16

NOR   9.886588038953964E+15  6.860384531762472E+15 -1.029498571823003E+15

NOR  -2.644252713032217E+15  9.225406995140016E+13  8.526771544377024E+16

NOR  -7.442824909058763E+15 -9.614352664163468E+15  6.947466431159296E+14

NOR   4.083635987417089E+15  1.936371974817479E+15 -6.650670390648669E+13

NOR   5.621552706609109E+15 -9.234805696207434E+13  6.206718517842140E+12

719

! Equinoctial elements: a, e*sin(LP), e*cos(LP), tan(i/2)*sin(LN), tan(i/2)*cos(LN), mean long.

EQU   2.6364103622198982E+00  -0.186326708068460   0.514276186383033   -0.006812869870696   -0.101134208827537   36.378392714914

MJD     60200.000000000 TDT

MAG  15.541  0.150

! Non-gravitational parameters: model used, number of model parameters, dimension

LSP   0  0    6

! RMS    2.46117E-09   3.46118E-08   2.38176E-08   2.52223E-08   2.39730E-08   3.12182E-06

! EIG   1.00462E-09   1.38501E-08   2.11606E-08   2.53188E-08   2.95261E-08   3.12195E-06

! WEA   0.00032  -0.00678  -0.00615   0.00035  -0.00102  -0.99996

COV   6.057336728951999E-18  3.217851093044731E-17 -1.733184414920642E-17

COV  -5.930480985395368E-18 -1.628975899014433E-17 -3.158541809894808E-15

COV   1.197974360642652E-15  3.562976958095435E-16 -8.333159295083081E-17

COV  -1.083649046775379E-16  6.608148032102679E-14  5.672759197126883E-16

COV   1.980178102409007E-17  7.348529126556605E-17  5.991782128942126E-14

COV   6.361634994047604E-16 -2.122421375267940E-17 -3.387188514857327E-15

COV   5.747038580707642E-16  9.897277879564413E-15  9.745752730778939E-12

NOR   9.846755475877970E+17 -7.152611639430369E+16 -2.962993641783093E+16

NOR   6.035166012537609E+15  1.438768447386393E+15  9.869175212896380E+14

NOR   6.667016349572581E+15  2.466087235097358E+15 -3.058605412754353E+14

NOR   3.499028627770216E+14 -8.401056633237788E+13  6.061601081137045E+15

NOR  -4.833275020475225E+14 -7.097754429048691E+13 -6.368750289838172E+13

NOR   1.646492825450652E+15  1.074488379597723E+14  7.464534038788008E+12

NOR   1.918043936026422E+15 -3.380378539344051E+12  1.389684302550699E+12

887

[...]

 
Catalogue of NEAs orbits in equinoctial elements (middle arc)

URL: PSDB-portlet/download?file=neo.ctm

Output format: same as the neo.ctc file.

 
Monthly computation date

URL: PSDB-portlet/download?file=monthly_update.done

Output format: file containing the date of the latest monthly runs performed by the NEOCC Orbit Determination system.

Tue Oct 20 19:23:39 UTC 2020
 
Risk list (normal)

URL: PSDB-portlet/download?file=esa_risk_list

Output format: a line with the last update date/time, followed by a table of fields delimited by pipe characters (U+007C). The first three lines are headers, with the second field under "diameter" recording an asterisk if the value has been estimated from the absolute magnitude.

Last Update: 2019-10-03 07:34 UTC

            Object         |    Diameter    |             VI Max                                   |          VIs                  |

 Num/des.       Name       |   m  |   *=Y   |      Date/Time   |  IP max  | PS max |TS  | Vel km/s | Years     | IP cum   | PS cum |

AAAAAAAAA AAAAAAAAAAAAAAAA | NNNN |    A    | YYYY-MM-DD HH:MM | EEEEEEEE | NNN.NN | NN |  NNN.NN  | YYYY-YYYY | EEEEEEEE | NNN.NN |

2010RF12                   |    9 |    *    | 2095-09-05 23:50 |  6.00E-2 |  -3.26 |  0 |   12.29  | 2095-2117 |  6.05E-2 |  -3.26 |

99942              Apophis |  375 |         | 2068-04-12 15:13 |  1.88E-6 |  -3.67 |  0 |   12.62  | 2068-2116 |  2.30E-6 |  -3.59 |

443104            2013XK22 |   50 |    *    | 2101-06-20 07:38 |  2.24E-5 |  -4.63 |  0 |   13.14  | 2101-2101 |  2.24E-5 |  -4.63 |

...

 
Risk list (special)

URL: PSDB-portlet/download?file=esa_special_risk_list

Output format: equal to normal risk list.
 

Close approaches (upcoming)

URL: PSDB-portlet/download?file=esa_upcoming_close_app

Output format: a line with the last update date/time, followed by a table of fields delimited by pipe characters (U+007C). The first three lines are headers, with the second field under "diameter" recording an asterisk if the value has been estimated from the absolute magnitude.

Last Update: 2019-10-02 21:24 UTC

            Object         |            |   Miss Distance             |     Diameter     |  H   | Max bright | Rel. vel |

 Num/des.       Name       | Date       |    km   |    au    |   LD   |   m    |  *=Yes  | mag  |   mag      | km/s     |

AAAAAAAAA AAAAAAAAAAAAAAAA | YYYY-MM-DD | DDDDDDD | D.DDDDDD | DD.DDD | NNNN   |   A     | DD.D |   DDD.D    | DD.D     |

2019SL8                    | 2019-10-03 | 3023238 | 0.020209 |  7.865 |   26   |   *     | 25.7 |    18.9    | 27.5     |

2010AE30                   | 2020-01-14 | 6905498 | 0.046160 | 17.964 |   50   |         | 23.9 |   120      | 51.8     |

162082             1998HL1 | 2019-10-25 | 6216076 | 0.041552 | 16.171 |  500   |   *     | 19.2 |    12.6    | 19.5     |

...

 
Close approaches (recent)

URL: PSDB-portlet/download?file=esa_recent_close_app

Output format: equal to close approaches list.
 

Priority list (normal)

URL: PSDB-portlet/download?file=esa_priority_neo_list

Output format: a line with the last update date/time, followed by a table of fixed-width fields. There are no headers in the file; the fields are in the order:

  1. Priority class, from 0 (most urgent) to 3 (least)
  2. Designator of the object, quoted
  3. Current right ascension on the sky, Geocentric equatorial, in arcseconds
  4. Current declination on the sky, in sexagesimal degrees
  5. Current Solar elongation, in sexagesimal degrees
  6. Current observable brightness, V band, in magnitudes
  7. Uncertainty in the plane of the sky, in arcseconds
  8. Expected date of end of visibility, quoted and as YYYY/MM/DD

"2019/10/02"

0 "2012 UA174" 8820.0 42.0 134 21.7 18059 "2019/12/23"

0 "2012 VB37" 72840.0 12.7 115 21.0 72229 "2019/11/27"

1 "2019 SG5" 3420.0 -3.3 171 21.7 5 "2019/10/26"

...

 
Priority list (faint)

URL: PSDB-portlet/download?file=esa_faint_neo_list

Output format: same as the normal priority list.

 
Impacted objects

URL: /PSDB-portlet/download?file=past_impactors_list

Output format: a table summarising the objects impacted on Earth until now along with their impact date.

Last Update: 2022-04-04 10:00:00 UTC

  Object designator  |  Diameter in m  |  Impact date/time in UTC  |  Impact Velocity in km/s  |  Estimated energy in Mt  |  Measured energy in Mt  |

       2022EB5      |      1.8*       |    2022-03-11 21:22:00    |           18.53           |        1.09E-4           |      4.00E-3            |

       2019MO       |       5*        |    2019-06-22 21:32:00    |           16.34           |        3.82E-3           |      6.00E-3            |

       2018LA       |       3*        |    2018-06-02 16:45:00    |           16.98           |        8.90E-4           |      9.80E-4            |

       2014AA       |       3*        |    2014-01-02 02:53:00    |           11.97           |        2.44E-4           |      n/a                |

       2008TC3      |       4.1       |    2008-10-07 02:45:00    |           11.77           |        6.77E-4           |      1.00E-3            |

 
Close encounters list

URL: PSDB-portlet/download?file=close_encounter2.txt

Output format: file containing the list of all computed close encounters between asteroids and the Earth and with a close approach distance smaller than 0.2 au.

Tue  Feb  23  13:13:12  UTC  2021

   Name/desig  |  Planet   |  Date              |  Time  approach   |  Time  uncert     |  Distance               |  Minimum  distance      |  Distance  uncertainty  |  Width      |  Stretch    |  Probability     |  Velocity        |  Max  Mag

   DDDDDDDDDD  |  AAAAA    |  YYYY/MM/DD.DDDDD  |  DDDDD.DDDDDDDDD  |  E.EEEEEEEEEEEEE  |  E.EEEEEEEEEEEEEEEEEEE  |  E.EEEEEEEEEEEEEEEEEEE  |  E.EEEEEEEEEEEEEEEEEEE  |  E.EEEEEEE  |  E.EEEEEEE  |  E.EEEEEE        |  DDD.DDDDDDDD    |  DDD.DDD

          433  |  EARTH    |  1975/01/23.31907  |  42435.319065926  |  1.258310357E-05  |  1.511341757334717E-01  |  1.511341664330519E-01  |  1.905024672273490E-08  |  1.332E-08  |  5.764E-08  |  1.00E+00        |    5.82530920    |    7.390

          433  |  EARTH    |  2012/01/31.45875  |  55957.458754981  |  1.066992942E-05  |  1.786758138376142E-01  |  1.786758137172355E-01  |  7.298809338995028E-09  |  7.232E-09  |  3.059E-08  |  1.00E+00        |    5.94520144    |    8.239

          433  |  EARTH    |  2056/01/24.46037  |  72021.460370451  |  1.470012593E-05  |  1.497821811860041E-01  |  1.497821679409254E-01  |  1.695772121904839E-08  |  1.411E-08  |  6.787E-08  |  1.00E+00        |    5.82076279    |    7.287

...

 
30-days ephemeris catalogue

URL: PSDB-portlet/download?file=allnea_30d.eph

Output format: file containing 30 days of ephemeris for all NEAs.

Name         MJD         RA         DEC    Vmag    elong  phase  gallat.  d_earth d_sun   Motion & Dir.           Uncertainty Ellipse          MOID  unobs  arc

            (UTC)       (deg)      (deg)           (deg)   (deg)   (deg)    (au)   (au)  (deg/day) (deg)      (arcmin)    (arcmin)  (deg)       (au) (days)(days)

      433 59891.00000 204.30956 -16.58829  13.65   17.70   13.39   44.89   2.209  1.300   0.807  113.867        0.000        0.000  137.98    0.1504   341 46785

      433 59892.00000 205.07940 -16.91302  13.66   17.90   13.50   44.39   2.210  1.303   0.804  113.680        0.000        0.000  138.10    0.1504   341 46785

      433 59893.00000 205.84965 -17.23448  13.67   18.09   13.61   43.88   2.211  1.307   0.802  113.489        0.000        0.000  138.20    0.1504   341 46785

...

      719 59891.00000 260.83635 -15.50961  19.00  -36.55   24.93   11.52   2.066  1.400   0.751   96.885        0.000        0.000  113.56    0.2013    95 40500

      719 59892.00000 261.61342 -15.59824  18.99  -36.30   24.87   10.84   2.064  1.395   0.756   96.619        0.000        0.000  113.07    0.2013    95 40500

      719 59893.00000 262.39606 -15.68391  18.98  -36.06   24.82   10.15   2.062  1.389   0.761   96.352        0.000        0.000  112.59    0.2013    95 40500

...

 

Direct download of data on an object

These URLs can be invoked with specific object designators. They are equivalent to clicking the Download as TXT button in the relevant tabs of the details page for the object.

Asteroid orbit properties

URL: PSDB-portlet/download?file=$desig.$orbptype

Output format: OEF as used by OrbFit.

format  = 'OEF2.0'       ! file format

rectype = 'ML'           ! record type (1L/ML)

refsys  = ECLM J2000     ! default reference system

END_OF_HEADER

433

! Keplerian elements: a, e, i, long. node, arg. peric., mean anomaly

 KEP     1.458248    0.222790      10.830     304.299     178.864     159.138

 MJD   58800.0000 TDT

MAG  11.073  0.460

! Non-grav parameters: model used, actual number in use, dimension

 LSP   0  0    6

! PERIHELION    1.1334

! APHELION    1.7831

! ANODE    0.76863

! DNODE    0.14964

! MOID    0.14964

! PERIOD         643.1989

! PHA F

! VINFTY    1.2356

! RMS    2.458E-10   1.016E-08   2.560E-06   1.023E-05   1.130E-05   2.952E-06

 COV          6.04292990E-20         9.09209037E-20        -6.17794561E-17

 COV         -4.00539278E-16         8.81807321E-17         7.72386552E-17

 COV          1.03143713E-16         5.47044187E-15         2.15504086E-14

 COV         -2.26406417E-14         6.22914285E-15         6.55212796E-12

 COV          5.12323044E-12        -5.23936067E-12         5.66749789E-13

 COV          1.04562491E-10        -1.04403407E-10         4.76487290E-12

 COV          1.27648723E-10        -1.84074481E-11         8.71499484E-12

 COR              1.00000000             0.03641821            -0.09818138

 COR             -0.15934314             0.03174985             0.10643326

 COR              1.00000000             0.21043106             0.20751341

 COR             -0.19731455             0.20776546             1.00000000

 COR              0.19573331            -0.18116691             0.07500092

 COR              1.00000000            -0.90368791             0.15784462

 COR              1.00000000            -0.55188905             1.00000000

 
Asteroid physical properties

URL: PSDB-portlet/download?file=$desig.phypro

Output format: summary file containing the physical properties of an asteroid.

Rotation Period,30.56,h,[4]

Quality,3,-,[4]

Amplitude,1.0,mag,[4]

Rotation Direction,RETRO,-,[1]

Spinvector L,250,deg,[1]

Spinvector B,-7.50E1,deg,[1]

Taxonomy,S/Sq,-,[2]

Taxonomy (all),Sq,Scomp,-,[3]

Absolute Magnitude (H),19.09,mag,[5]

Absolute Magnitude (H),18.937,mag,[6]

Slope Parameter (G),0.15**,mag,[7]

Slope Parameter (G),0.24,mag,[1]

Slope Parameter (G),0.15**,mag,[6]

Albedo,0.285,-,[8]

Diameter,375,m,[9]

Color Index Information,0.846,B-V,[10]

Color Index Information,0.362,R-I,[10]

Color Index Information,0.451,V-R,[10]

Sightings,Visual S,-,[11]

Sightings,Radar R,-,[12]

 

REFERENCES

 

[1],EARN,1.) Pravec, P. et al (2014) Icarus 233,48-60. (The tumbling spin state of (99942) Apophis)

[2],EARN,1.) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)

[3],EARN,1.) Binzel, R.P. et al. (2009) Icarus 200, 480-485. (Spectral properties and composition of potentially hazardous Asteroid (99942) Apophis) 2.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh

surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs) 3.) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)

 

[4],EARN,1.) Pravec, P. et al (2014) Icarus 233,48-60. (The tumbling spin state of (99942) Apophis) 2.) R. Behrend Courbes des lumiere, Observatoire de Geneve website 3.) Oey, J. (2014) MPB 41, 276-280. (LIGHTCURVE ANALYSIS OF ASTEROIDS FROM BLUE MOUNTAINS OBSERVATORY IN 2013) (99942,163364,285263)

[5],EARN,1.) Pravec, P. et al (2014) Icarus 233,48-60. (The tumbling spin state of (99942) Apophis) 2.) Delbo, M. et al. (2007) Icarus 188,266-269. (Albedo and size determination of potentially hazardous asteroids: (99942) Apophis)

[6],ESA ODIM,ESA orbit determination and impact monitoring system

[7],NEODyS,NEO Dynamic Site: https://newton.spacedys.com/neodys2

[8],EARN,1.) Licandro, J. et al. (2016) Astron. Astrophys. 585, A10. (GTC/CanariCam observations of (99942) Apophis) 2.) Mueller, T.G. et al. (2014) Astron. Astrophys. 566, A22. (Thermal Infrared Observations of Asteroid (99942) Apophis with Herschel) 3.) Mueller, T. et al. (2013) New Size and Albedo for Apophis from IR Data obtained with Herschel Space Telescope 4.) Delbo, M. et al. (2007) Icarus 188,266-269. (Albedo and size determination of potentially hazardous asteroids: (99942) Apophis) 5.) Licandro, J. et al. (2016) Astron. Astrophys. 585, A10. (GTC/CanariCam observations of (99942) Apophis)

[9],EARN,1.) Licandro, J. et al. (2016) Astron. Astrophys. 585, A10. (GTC/CanariCam observations of (99942) Apophis) 2.) Mueller, T.G. et al. (2014) Astron. Astrophys. 566, A22. (Thermal Infrared Observations of Asteroid (99942) Apophis with Herschel) 3.) Mueller, T. et al. (2013) New Size and Albedo for Apophis from IR Data obtained with Herschel Space Telescope 4.) Delbo, M. et al. (2007) Icarus 188,266-269. (Albedo and size determination of potentially hazardous asteroids: (99942) Apophis)

[10],EARN,1.) Lin, C-H. et al. (2018) P&SS 152, 116-135. (Photometric survey and taxonomic identifications of 92 near-Earth asteroids)

[11],EARN,1.) Binzel, R.P. et al. (2004) Meteorit. Planet. Sci. 39, 351-366. (Dynamical and compositional assessment of near-Earth object mission targets) (new spectra and taxonomy of 22 NEOs) 2.) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.) 3.) Binzel, R.P. et al. Webpage 4.) Binzel, R.P. et al. (2009) Icarus 200, 480-485. (Spectral properties and composition of potentially hazardous Asteroid (99942) Apophis) 5.) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)

[12],EARN,1.) JPL's NEO Radar Detection Program Webpage 2.) Ostro, S.J. et al. (2005) I.A.U. Circ. 8477. (2004 MN_4) Radar observations) 3.) Giorgini, J.D. et al. (2005) I.A.U. Circ. 8593. (99942 Apophis) (radar observations and orbital improvement) 4.) Benner, L.A.M. et al. (2006) I.A.U. Circ. 8711. ((99942) APOPHIS) (radar observations and orbital improvement)

 
Asteroid observation records

URL: PSDB-portlet/download?file=$desig.rwo

Output format: suitable for input into OrbFit.

version =   2

errmod  = 'vfcc17'

RMSast  =   5.75611E-01

RMSmag  =   4.46506E-01

END_OF_HEADER

! Object   Obser ============= Date ============= ================== Right Ascension =================  ================= Declination ===================== ==== Magnitude ==== Ast Obs  Residual SEL

! Design   K T N YYYY MM DD.dddddddddd   Accuracy HH MM SS.sss  Accuracy      RMS  F     Bias    Resid sDD MM SS.ss  Accuracy      RMS  F     Bias    Resid Val  B   RMS  Resid Cat Cod       Chi A M

433       O A   1893 10 29.4132        1.000E-04 06 08 59.320  8.890E-02    5.000 F    0.000   -0.355 +53 39 04.20  1.000E-01    5.000 F    0.000    0.874                         802      0.19 1 0

433       O M   1898 08 21.01304       1.000E-05 21 20 41.480  1.492E-01    3.000 F   -0.125    2.228 -05 53 51.00  1.000E-01    3.000 F    0.077   -0.438                       p 030      0.76 1 0

433       O P   1901 02 06.84085       1.000E-05 04 07 44.800  1.379E-01    5.000 F    0.186   -0.668 +23 10 26.70  1.000E-01    5.000 F   -0.790    1.251                       m 000      0.28 1 0

433       O C 2 2002 09 22.252272      1.000E-06 22 39 08.317  1.450E-02    0.500 F    0.000   -0.031 +14 46 17.05  1.000E-02    0.500 F    0.000   -0.026 11.28V  0.50  -0.05   g 689      0.08 1 1

433       O C ] 2002 09 27.961458      1.000E-06 22 29 32.708  1.453E-02    0.500 F    0.000   -0.078 +14 19 16.09  1.000E-02    0.500 F    0.000   -0.013 10.7 R  0.70  -0.69   t 950      0.16 1 1

433       S S   2018 07 25.00676       1.000E-05 01 47 20.100  1.388E-01    1.000 F   -0.034    0.063 +22 15 12.20  1.000E-01    1.000 F    0.090    0.135 14   R  1.00   0.61   L C51      0.15 1 1

433       S s   2018 07 25.00676 1     2725.7405     5202.6437     3536.8391 C51

433       O C K 2018 09 29.926863      1.000E-06 03 52 55.920  1.056E-01    1.581 F    0.000   -0.153 +45 14 11.60  1.000E-01    1.581 F    0.000    0.197 11.7 G  0.70   0.09   V Z80      0.16 1 1

433       O C   2019 08 28.249222      1.000E-06 14 38 08.930  1.378E-01    1.000 F    0.000    0.079 -23 15 03.30  1.000E-01    1.000 F    0.000   -0.004 13.51o  0.50  -0.47   V T08      0.08 1 1

! Object   Obser ====== Date =======  ============ Radar range/range rate (km or km/d) ============= Station    Residual

! Design   K T N YYYY MM DD hh:mm:ss        Measure     Accuracy    rms    F      Bias       Resid   TRX RCX     Chi   S

433       V s   1975 01 23 04:25:00        39.15429  90.35605  90.35605 F     0.00000   -83.21717 251 251      0.92 1

433       R c   2012 01 27 06:30:00  26884915.59373   3.74741   3.74741 F     0.00000    -0.13556 253 253      0.04 1

 
Generation of observational ephemerides for an object

URL: PSDB-portlet/ephemerides?des=$desig&oc=$obscode&t0=$tini&t1=$tend&ti=$dt&tiu=$dtunit

Output format: A summary of the parameters used for the query, followed by a table of fixed-width fields.

As an example, using the following parameters: des=433+Eros&oc=500&t0=2019-08-25T00:00Z&t1=2019-09-01T00:00Z&ti=1&tiu=days results in a response similar to the listing below.

Ephemerides generation for: 99942 Apophis

Observatory: 500 - Geocentric

Initial Date: 2021/09/01 00:00 UTC

Final Date: 2021/10/31 00:00 UTC

Time step: 1 days

                                     Equatorial coordinates                                                                                         App. motion                           Sky plane error     

    Date      Hour      MJD            RA            DEC       Mag   Alt  Airmass   Sun elev.   SolEl  LunEl  Phase Glat  Glon     R     Delta   RA*cosDE     DEC       Vel    PA       Err1     Err2   AngAx 

             (UTC)     (UTC)        (h  m  s)     (d  '  ")         (deg)             (deg)     (deg)  (deg)  (deg) (deg) (deg)   (au)    (au)   ("/min)   ("/min)    ("/min) (deg)                     (deg) 

 =========== ====== ============  =============  ============ ====== ===== ======== =========== ====== ====== ====== ===== ===== ======= =======  ========  ========  ======== =====  ========  ======== ======

  1 Sep 2021  0.000 59458.000000    7 12 56.134  +22 20 23.37  20.70   0.0    INF      0.0        51.7  -19.9   82.2  14.5 195.0   0.799   0.734    1.9718   -0.4790    2.0291 103.7    0.002"    0.001" 172.6

  2 Sep 2021  0.000 59459.000000    7 16 20.848  +22  8 48.20  20.70   0.0    INF      0.0        51.8   -9.1   81.6  15.1 195.5   0.801   0.740    1.9763   -0.4867    2.0354 103.8    0.002"    0.001" 173.6

  3 Sep 2021  0.000 59460.000000    7 19 45.720  +21 57  1.89  20.70   0.0    INF      0.0        52.0    4.8   81.0  15.8 196.0   0.804   0.747    1.9803   -0.4944    2.0411 104.0    0.002"    0.001" 174.5

  4 Sep 2021  0.000 59461.000000    7 23 10.686  +21 45  4.38  20.70   0.0    INF      0.0        52.1   15.4   80.3  16.4 196.5   0.807   0.754    1.9837   -0.5022    2.0463 104.2    0.002"    0.001" 175.3

...

 
Asteroid close approach report

URL: PSDB-portlet/download?file=$desig.clolin

Output format: a table of fixed-width (or space-separated) columns.

 BODY CALENDAR-TIME MJD-TIME TIME-UNCERT. NOM.-DISTANCE MIN.-POSS.-DIST. DIST.-UNCERT. STRETCH WIDTH PROBABILITY

EARTH 1952/11/01.68886 34317.688864607 2.096598257E+01 7.980861285802057E-02 1.821311955041971E-02 4.378308122910667E-01 4.476E-01 4.489E-07 1.48E-01

EARTH 1975/11/06.48625 42722.486247187 2.089669203E+01 1.638756000143885E-01 1.793690962584499E-02 4.845451563848359E-01 4.857E-01 4.202E-07 1.37E-01

...

 
Possible impacts

URL: PSDB-portlet/download?file=$desig.risk

Output format: the first line indicates the object. The following four are header. From the fifth line to the next empty line there are listed all possible impactors. The file ends with some additional information about the orbit determination process and some other comments in html format.

Object: 99942 Apophis

    date             MJD        sigma   sigimp   dist +/- width  stretch     p_RE      exp. en.    PS    TS  

YYY/MM/DD.ddd                                       (RE)          (RE)      (RE)        (MT)

-----------------------------------------------------------------------------------------------------------

 2068-04-12.634    76483.634   -1.317    0.000   1.73 +/- 0.006   3.85E5    1.88E-6    1.43E-3    -3.67   0   

 2068-10-15.324    76669.324   -0.182    0.000   1.48 +/- 0.000   5.29E6    2.39E-7    1.81E-4    -4.57   0   

 2069-04-13.079    76849.079    4.127    0.000   1.68 +/- 0.000   1.67E5    1.80E-9    1.36E-6    -6.70   0   

 2069-10-15.604    77034.604    1.993    0.000   1.85 +/- 0.000   3.34E6    6.56E-8    4.97E-5    -5.14   0   

 2069-10-15.973    77034.973    2.543    0.000   0.46 +/- 0.016   9.20E5    7.23E-8    5.49E-5    -5.09   0   

 2077-04-13.165    79771.165    4.205    0.000   2.14 +/- 0.000   1.03E6    1.34E-10   1.02E-7    -7.88   0   

 2078-04-13.442    80136.442    4.125    0.000   1.61 +/- 0.000   6.23E6    4.32E-11   3.27E-8    -8.38   0   

 2102-04-11.809    88899.809    2.556    0.000   4.22 +/- 0.253   1.85E7    2.96E-9    2.18E-6    -6.68   0   

 2106-10-16.871    90548.871    2.540    0.000   2.03 +/- 0.000   6.53E5    3.88E-8    2.94E-5    -5.57   0   

 2116-04-15.650    94017.650    1.989    0.000   2.14 +/- 0.000   3.10E9    3.63E-11   1.44E-8    -8.87   0   

 

Based on 4105 optical observations (of which  87 are rejected as outliers)

from 2004/03/15.109 to 2013/05/07.150.

Coordinates are given on the Target Plane

 

nit is one Earth radius, but impact cross section

has radius between  2.15 and  2.15 Earth radii

 

Coordinates for LOV = KEP scaled= T second= F

 

OrbFit software version= 4.3, 08/05/2012 Date of computation=20130801 220340.613 CET

 

<p> </p>

<p><span style="color: #0000CD;"><strong>ADDITIONAL NOTE</strong></span></p>

<p>The results contained in this impactor table are based on the Line Of Variations method generalised

to the 7-dimensional space of the orbital elements and the Yarkovsky parameter. The Yarkovsky parameter

has been estimated from the fit to the astrometry as (5.98 +/- 2.06) 10<sup>-15</sup> au/d<sup>2</sup>,

so that no a priori constraint based upon models and physical observations has been used.<p>

<p>The results are qualitatively compatible with the ones obtained at JPL, computed by using a priori

information for the Yarkovsky effect computation and a Monte Carlo method, as described in the paper

<a href="http://arxiv.org/abs/1301.1607" target="_blank">Farnocchia <em>et al.</em> (2013)</a>.</p>