Asteroids

2020KS help

Last update: 2024-05-14 16:31 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.831

Aphelion (Q)

1.343

Eccentricity (e)

0.236

Inclination (i)

5.1

deg

Orbit period (P)

414.0

Earth MOID

0.00069

U parameter

5.9

Next Earth close approach

Date

2027-11-09

Nominal distance (from Earth center)

0.19356

28956367

Maximum Brightness

24.2

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-05-18

Observatory

Pan-STARRS 2, Haleakala

Orbit Visualiser

Click the button to start Orbit Visualiser

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.087092

1-sigma variation

0.000029

Unit

Eccentricity (e)

Value

0.235509

1-sigma variation

0.000041

Unit

Inclination (i)

Value

5.1464

1-sigma variation

0.0010

Unit

Long. of Ascending Node (Ω)

Value

67.9566

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

79.2343

1-sigma variation

0.0011

Unit

Mean Anomaly (M)

Value

211.64216

1-sigma variation

0.05492

Unit

Perihelion distance

Value

0.831072

1-sigma variation

Unit

Aphelion distance

Value

1.343112

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001762

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.060158

1-sigma variation

Unit

MOID

Value

0.000687

1-sigma variation

Unit

Orbit Period

Value

413.9975

1-sigma variation

Unit

U parameter

Value

5.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.53407E-10	1.19332E-9	2.79460E-8	-5.02920E-9	3.08845E-8	-1.60430E-6
e	1.19332E-9	1.66890E-9	3.90786E-8	-7.02851E-9	4.31458E-8	-2.24329E-6
i	2.79460E-8	3.90786E-8	9.15382E-7	-1.64957E-7	1.01133E-6	-5.25348E-5
Ω	-5.02920E-9	-7.02851E-9	-1.64957E-7	3.01154E-8	-1.82927E-7	9.45424E-6
ω	3.08845E-8	4.31458E-8	1.01133E-6	-1.82927E-7	1.12388E-6	-5.80593E-5
M	-1.60430E-6	-2.24329E-6	-5.25348E-5	9.45424E-6	-5.80593E-5	3.01587E-3

Date of computation: 2024-04-23 10:08 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

25.72

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

19 - 40*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

1415

Unit

Source

[1]

Normalized RMS of residuals

Value

0.605882

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-05-16.491732

Unit

Source

[2]

Last Observation

Value

2020-06-29.259248

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

133 (2)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close approaches for 2020KS from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1954-05-09 00:02	> 1 w	0.0652669	0.0257930	0.1077685
EARTH	1962-05-13 00:16	> 1 d	0.0268575	0.0268010	0.0012863
EARTH	1970-05-18 08:42	> 1 d	0.1075370	0.0413507	0.0233208
EARTH	1976-11-22 10:36	1264.6	0.1036145	0.0493944	0.0180897
EARTH	1984-11-28 07:02	35.4	0.0075118	0.0067880	0.0002424
EARTH	1994-03-10 13:45	> 1 d	0.1715269	0.1698153	0.0005705
EARTH	2001-11-23 12:28	305.5	0.0927962	0.0800319	0.0042552
EARTH	2003-05-23 08:22	248.8	0.1339862	0.1216858	0.0041049
EARTH	2011-02-06 07:55	> 1 d	0.1722505	0.1711648	0.0003627
EARTH	2020-05-16 05:26	< 1 s	0.0218274	0.0218157	0.0000039
EARTH	2027-11-09 23:40	> 1 d	0.1935614	0.1884927	0.0016907
EARTH	2028-01-20 07:43	> 1 d	0.1557098	0.1532534	0.0008203
EARTH	2037-05-17 18:37	298.6	0.0348684	0.0264179	0.0031496
EARTH	2045-02-25 07:27	138.5	0.1760182	0.1758008	0.0000725
EARTH	2052-11-30 08:20	527.4	0.0048501	0.0002219	0.0044509
EARTH	2061-05-09 18:47	> 1 mo	0.0425845	0.0277566	0.6236051
EARTH	2067-12-05 03:17	> 1 mo	0.0495995	0.0013638	1.4605449
EARTH	2076-05-13 07:34	> 1 d	0.0477405	0.0257248	0.1539732
EARTH	2083-02-07 23:04	> 1 mo	0.1664337	0.1072686	0.1898582
EARTH	2089-11-23 14:47	> 1 mo	0.1118278	0.0010408	2.4727707
EARTH	2098-05-06 22:29	> 1 mo	0.0738099	0.0260875	2.4162502
EARTH	2104-12-13 08:48	> 1 mo	0.0878875	0.0068405	1.7003383
EARTH	2113-05-19 05:39	> 1 w	0.1342917	0.0250912	0.2729320
EARTH	2120-03-04 06:29	> 1 mo	0.1670932	0.0412820	0.2718672

Download as:

2020KS

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2079-11-30.349	80732.349	4.917	0.000	1.39 ± 0.007	3.12E5	1.81E-11	6.40E-12	-11.33	0
2120-11-30.040	95707.040	-0.713	0.000	0.56 ± 0.034	2.53E7	4.40E-8	1.56E-8	-8.18	0


Based on 133 optical observations (of which 2 are rejected as outliers) from 2020/05/16.492 to 2020/06/29.259.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.87 and 1.87 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090431.328 UTC.

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