Asteroids

2017TD6 help

Last update: 2024-05-08 06:14 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.798

Aphelion (Q)

1.591

Eccentricity (e)

0.332

Inclination (i)

1.9

deg

Orbit period (P)

476.7

Earth MOID

0.00024

U parameter

5.9

Next Earth close approach

Date

2027-04-04

Nominal distance (from Earth center)

0.17406

26038788

Maximum Brightness

26.4

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

9 - 21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-10-11

Observatory

Pan-STARRS 1, 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

1.194197

1-sigma variation

0.000032

Unit

Eccentricity (e)

Value

0.332034

1-sigma variation

0.000041

Unit

Inclination (i)

Value

1.9158

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

26.8184

1-sigma variation

1.237E-5

Unit

Arg. of Perihelion (ω)

Value

77.7570

1-sigma variation

0.0021

Unit

Mean Anomaly (M)

Value

294.39038

1-sigma variation

0.07010

Unit

Perihelion distance

Value

0.797683

1-sigma variation

Unit

Aphelion distance

Value

1.590711

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.002031

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.138804

1-sigma variation

Unit

MOID

Value

0.000236

1-sigma variation

Unit

Orbit Period

Value

476.6641

1-sigma variation

Unit

U parameter

Value

5.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.01462E-9	1.29542E-9	5.69219E-9	2.40299E-10	6.61760E-8	-2.23298E-6
e	1.29542E-9	1.65472E-9	7.26860E-9	3.12908E-10	8.46224E-8	-2.85100E-6
i	5.69219E-9	7.26860E-9	3.19723E-8	1.33016E-9	3.71463E-7	-1.25274E-5
Ω	2.40299E-10	3.12908E-10	1.33016E-9	1.53113E-10	1.66646E-8	-5.29061E-7
ω	6.61760E-8	8.46224E-8	3.71463E-7	1.66646E-8	4.33859E-6	-1.45645E-4
M	-2.23298E-6	-2.85100E-6	-1.25274E-5	-5.29061E-7	-1.45645E-4	4.91435E-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

27.24

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

9 - 21*

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

2393

Unit

Source

[1]

Normalized RMS of residuals

Value

0.375053

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-10-11.41171

Unit

Source

[2]

Last Observation

Value

2017-10-19.527745

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

96 (0)

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 2017TD6 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	1955-04-07 19:52	> 1 mo	0.0368043	0.0062331	8.3667504
EARTH	1959-12-23 02:58	> 1 mo	0.1992005	0.0365013	2.2837675
EARTH	1971-03-27 11:33	> 1 mo	0.0883111	0.0050036	16.5302228
EARTH	1975-11-16 04:02	> 1 mo	0.1405028	0.0109123	10.5130985
EARTH	1987-02-11 00:38	> 1 mo	0.1860820	0.0077243	1.4545850
EARTH	1991-10-20 06:38	> 1 w	0.0120375	0.0013225	0.3847933
EARTH	2003-04-04 12:55	479.3	0.0069967	0.0067064	0.0013634
EARTH	2008-02-08 00:33	> 1 d	0.1873281	0.1843556	0.0009908
EARTH	2012-12-15 16:23	1216.9	0.1890850	0.1877697	0.0004385
EARTH	2017-10-19 18:52	< 1 s	0.0012780	0.0012775	0.0000002
EARTH	2027-04-04 06:03	156.5	0.1740585	0.1670928	0.0023222
EARTH	2031-01-06 12:24	> 1 d	0.1877467	0.1877162	0.0000103
EARTH	2034-10-09 19:39	285.7	0.1659878	0.1530963	0.0042972
EARTH	2044-03-24 06:58	897.7	0.0132419	0.0131149	0.0010813
MARS	2045-01-08 17:37	855.9	0.0464613	0.0054752	0.0193099
EARTH	2047-11-30 03:43	> 1 mo	0.1543319	0.0515031	0.0349538
EARTH	2061-03-14 03:04	> 1 mo	0.0848545	0.0114973	0.2493383
EARTH	2064-10-29 16:13	> 1 mo	0.0794264	0.0010915	0.2465889
EARTH	2078-02-08 00:60	> 1 w	0.1614890	0.1379247	0.0078580
EARTH	2081-10-18 14:48	> 1 w	0.0215965	0.0006429	0.1003425
EARTH	2091-03-25 09:17	> 1 mo	0.0131866	0.0125808	0.2038229
EARTH	2094-10-29 07:36	> 1 mo	0.0762012	0.0010082	6.1008325
EARTH	2104-03-31 23:48	> 1 mo	0.0934807	0.0121997	15.8596387
EARTH	2107-12-06 21:27	> 1 mo	0.1639192	0.0244408	6.1117131
EARTH	2121-01-10 00:18	> 1 mo	0.1884717	0.1310193	0.4205956

Download as:

2017TD6

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2081-10-19.735	81421.735	-1.289	0.000	1.49 ± 0.000	6.73E6	3.00E-8	1.90E-9	-8.73	0


Based on 96 optical observations (of which 0 are rejected as outliers) from 2017/10/11.412 to 2017/10/19.528.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.59 and 1.59 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090432.753 UTC.

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