Asteroids

2020TS1 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.736

Aphelion (Q)

1.039

Eccentricity (e)

0.171

Inclination (i)

3.0

deg

Orbit period (P)

305.4

Earth MOID

0.00158

U parameter

4.9

Next Earth close approach

Date

2025-08-29

Nominal distance (from Earth center)

0.04549

6805525

Maximum Brightness

24.3

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

4 - 9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-10-08

Observatory

Pan-STARRS 1, Haleakala

ORBIT VISUALISATION TOOLS

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.887511

1-sigma variation

0.000004

Unit

Eccentricity (e)

Value

0.170874

1-sigma variation

0.000006

Unit

Inclination (i)

Value

3.0143

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

18.0855

1-sigma variation

4.952E-5

Unit

Arg. of Perihelion (ω)

Value

144.7998

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

33.01501

1-sigma variation

0.01296

Unit

Perihelion distance

Value

0.735859

1-sigma variation

Unit

Aphelion distance

Value

1.039163

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.003401

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.245350

1-sigma variation

Unit

MOID

Value

0.001576

1-sigma variation

Unit

Orbit Period

Value

305.3930

1-sigma variation

Unit

U parameter

Value

4.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.54941E-11	-2.21481E-11	-5.92703E-10	-1.94698E-10	-2.93856E-9	-5.10184E-8
e	-2.21481E-11	3.16634E-11	8.47310E-10	2.78412E-10	4.19948E-9	7.29302E-8
i	-5.92703E-10	8.47310E-10	2.26857E-8	7.45360E-9	1.12387E-7	1.95166E-6
Ω	-1.94698E-10	2.78412E-10	7.45360E-9	2.45198E-9	3.68940E-8	6.41140E-7
ω	-2.93856E-9	4.19948E-9	1.12387E-7	3.68940E-8	5.57635E-7	9.67553E-6
M	-5.10184E-8	7.29302E-8	1.95166E-6	6.41140E-7	9.67553E-6	1.67993E-4

Date of computation: 2025-07-29 02:36 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

28.996

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

4 - 9*

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 Aegis	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

1769

Unit

Source

[1]

Normalized RMS of residuals

Value

0.524071

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-10-08.50213

Unit

Source

[2]

Last Observation

Value

2020-10-13.20561

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

39 (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

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

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 2020TS1 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1951-10-10 23:46	> 1 mo	0.0405587	0.0049263	149.6665708
VENUS	1973-06-28 07:25	> 1 mo	0.0033690	0.0031650	0.1732499
EARTH	1974-08-24 07:35	> 1 w	0.1033793	0.0475335	0.4029482
EARTH	1974-12-18 20:34	> 1 mo	0.1894853	0.0196110	0.2561819
EARTH	1978-08-24 14:04	1310.6	0.0986724	0.0483032	0.1493928
EARTH	1978-12-16 20:27	> 1 mo	0.1859991	0.0282711	0.0863604
VENUS	1981-07-04 05:56	> 1 mo	0.0156444	0.0012170	0.0580270
EARTH	1982-08-20 18:17	313.6	0.1391616	0.0515523	0.0582228
VENUS	1991-12-13 20:22	973.5	0.0066685	0.0052895	0.0009723
EARTH	1999-10-21 12:48	8.6	0.1543696	0.1522200	0.0007165
EARTH	2003-09-04 00:54	56.2	0.0445197	0.0444279	0.0000310
VENUS	2007-04-22 00:46	63.3	0.0431479	0.0418351	0.0004376
VENUS	2020-04-30 06:24	6.9	0.0412856	0.0412724	0.0000044
EARTH	2020-10-12 10:55	< 1 s	0.0017039	0.0017037	0.0000000
EARTH	2025-08-29 17:13	170.6	0.0454921	0.0454613	0.0000106
EARTH	2030-08-01 17:31	12.3	0.0881659	0.0871275	0.0003471
VENUS	2031-12-09 22:29	211.3	0.0250184	0.0248164	0.0000763
EARTH	2051-10-17 13:22	175.7	0.1830023	0.1652674	0.0059122
EARTH	2056-05-24 10:37	> 1 d	0.1877548	0.1833814	0.0014713
EARTH	2056-10-18 08:18	201.4	0.0478686	0.0386552	0.0030739
EARTH	2061-10-08 22:57	> 1 d	0.0120991	0.0027311	0.0039912
EARTH	2066-07-31 00:27	791.3	0.1191601	0.0498245	0.0548114
VENUS	2071-04-24 00:56	> 1 w	0.0276167	0.0276109	0.0019431
EARTH	2082-09-28 16:48	> 1 mo	0.0301237	0.0101485	0.7388529
EARTH	2098-09-26 04:21	> 1 mo	0.0332824	0.0136833	2.4505582
EARTH	2109-10-16 17:32	> 1 mo	0.1810604	0.0076339	9.3677704
EARTH	2114-08-08 13:19	> 1 mo	0.0482149	0.0472862	2.1106196
EARTH	2114-12-10 19:38	> 1 mo	0.1622518	0.0232281	8.5573339
EARTH	2125-05-27 21:31	> 1 mo	0.1746435	0.1122275	12.1312723
EARTH	2125-10-16 16:05	> 1 mo	0.0222937	0.0044269	22.4692581

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
223.04569643	278.29313800	0.00157630	MINIMUM
5.13952112	65.63700036	0.25773947	SADDLE
6.59504428	247.33408852	1.74273692	SADDLE
184.90195176	65.62395565	2.03144056	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2020TS1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2121-10-10.293	96021.293	-0.090	0.000	1.94 ± 0.000	1.87E4	1.37E-4	2.82E-3	-6.36	0


Based on 39 optical observations (of which 2 are rejected as outliers) from 2020/10/08.502 to 2020/10/13.206.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 3.31 and 3.31 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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Download Impactor Table as: