Asteroids

2021TS10 help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.002

Aphelion (Q)

1.042

Eccentricity (e)

0.020

Inclination (i)

16.3

deg

Orbit period (P)

377.3

Earth MOID

0.00097

U parameter

6.6

Next Earth close approach

Date

2052-04-04

Nominal distance (from Earth center)

0.13737

20550034

Maximum Brightness

24.1

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.5

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-10

Observatory

Mt. Lemmon Survey

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

1.021788

1-sigma variation

0.000072

Unit

Eccentricity (e)

Value

0.019608

1-sigma variation

0.000036

Unit

Inclination (i)

Value

16.3310

1-sigma variation

0.0123

Unit

Long. of Ascending Node (Ω)

Value

19.9060

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

199.5145

1-sigma variation

0.0932

Unit

Mean Anomaly (M)

Value

321.01195

1-sigma variation

0.22877

Unit

Perihelion distance

Value

1.001753

1-sigma variation

Unit

Aphelion distance

Value

1.041823

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.043098

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000969

1-sigma variation

Unit

MOID

Value

0.000965

1-sigma variation

Unit

Orbit Period

Value

377.2589

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.12324E-9	-2.55355E-9	8.81651E-7	4.73863E-8	6.66197E-6	-1.63705E-5
e	-2.55355E-9	1.27291E-9	-4.39426E-7	-2.36184E-8	-3.31944E-6	8.15839E-6
i	8.81651E-7	-4.39426E-7	1.51758E-4	8.15647E-6	1.14576E-3	-2.81646E-3
Ω	4.73863E-8	-2.36184E-8	8.15647E-6	4.38389E-7	6.15800E-5	-1.51376E-4
ω	6.66197E-6	-3.31944E-6	1.14576E-3	6.15800E-5	8.68721E-3	-2.13126E-2
M	-1.63705E-5	8.15839E-6	-2.81646E-3	-1.51376E-4	-2.13126E-2	5.23358E-2

Date of computation: 2025-04-09 07:59 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

25.457

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

22 - 50*

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

1351

Unit

Source

[1]

Normalized RMS of residuals

Value

0.630873

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-10-10.389282

Unit

Source

[2]

Last Observation

Value

2021-10-18.177346

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

79 (3)

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 2021TS10 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	1960-04-09 12:51	> 1 w	0.0061834	0.0002100	0.4700398
EARTH	1960-10-12 16:27	> 1 w	0.0413218	0.0404462	0.0836664
EARTH	1961-04-16 17:55	> 1 w	0.1812850	0.0046557	0.4201300
EARTH	1961-10-09 20:46	> 1 d	0.1784912	0.0557412	0.3918370
EARTH	1992-04-03 16:07	471.2	0.1774812	0.1503897	0.0090305
EARTH	1992-10-16 14:02	752.0	0.1746082	0.1706947	0.0013650
EARTH	1993-04-10 10:20	304.3	0.0123907	0.0004928	0.0057213
EARTH	1993-10-11 22:14	223.2	0.0538649	0.0482469	0.0026317
EARTH	2021-04-09 08:51	7.8	0.0163057	0.0154276	0.0002937
EARTH	2021-10-12 21:41	< 1 min	0.0433652	0.0432692	0.0000320
EARTH	2022-04-16 23:10	11.8	0.1802606	0.1790087	0.0004174
EARTH	2022-10-09 18:19	1.5	0.1839183	0.1819446	0.0006581
EARTH	2052-04-04 22:40	809.3	0.1373685	0.0780970	0.0197572
EARTH	2052-10-15 11:43	679.9	0.1321440	0.0820680	0.0177110
EARTH	2053-04-12 02:17	989.6	0.0593420	0.0010979	0.0194253
EARTH	2053-10-11 06:51	410.0	0.0773225	0.0480386	0.0140587
EARTH	2083-04-07 22:57	> 1 d	0.0711598	0.0006292	0.0770016
EARTH	2083-10-14 13:26	> 1 d	0.0738466	0.0434098	0.0592548
EARTH	2084-04-14 09:09	> 1 d	0.1268453	0.0010143	0.0701036
EARTH	2084-10-09 23:07	1125.8	0.1350243	0.0532214	0.0611054
EARTH	2114-04-05 23:27	> 1 d	0.1520976	0.0006846	0.2228899
EARTH	2114-10-17 07:48	> 1 d	0.1440002	0.0538314	0.2023902
EARTH	2115-04-13 02:39	> 1 w	0.0466569	0.0001431	0.2235462
EARTH	2115-10-12 22:25	> 1 d	0.0697963	0.0477620	0.1448509

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
340.85399979	97.09236193	0.00102122	MINIMUM
159.36999236	278.29291379	0.04338530	MINIMUM
69.82499996	188.62838253	0.28859235	SADDLE
250.39970990	6.75907880	0.28923761	SADDLE
51.56609496	349.13761031	1.97397793	SADDLE
181.83218245	119.41489184	2.04683616	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2021TS10

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2120-04-10.575	95473.575	-4.525	0.000	0.22 ± 0.000	2.28E6	2.05E-11	1.17E-11	-11.33	0


Based on 79 optical observations (of which 3 are rejected as outliers) from 2021/10/10.389 to 2021/10/18.177.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.65 and 1.65 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250305 083035.527 UTC.

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Download Impactor Table as: