Asteroids

2021TS15 help

Last update: 2024-04-26 23:50 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.700

Aphelion (Q)

1.038

Eccentricity (e)

0.195

Inclination (i)

1.5

deg

Orbit period (P)

296.0

Earth MOID

0.00826

U parameter

7.6

Next Earth close approach

Date

2042-12-11

Nominal distance (from Earth center)

0.07081

10592681

Maximum Brightness

24.9

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.7

mag

Diameter

12 - 27*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-14

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

0.869128

1-sigma variation

0.000203

Unit

Eccentricity (e)

Value

0.194815

1-sigma variation

0.000388

Unit

Inclination (i)

Value

1.4512

1-sigma variation

0.0032

Unit

Long. of Ascending Node (Ω)

Value

58.5628

1-sigma variation

0.0115

Unit

Arg. of Perihelion (ω)

Value

159.9677

1-sigma variation

0.0187

Unit

Mean Anomaly (M)

Value

168.72156

1-sigma variation

0.35776

Unit

Perihelion distance

Value

0.699808

1-sigma variation

Unit

Aphelion distance

Value

1.038447

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.036504

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.305199

1-sigma variation

Unit

MOID

Value

0.008263

1-sigma variation

Unit

Orbit Period

Value

295.9537

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.11918E-8	-7.88027E-8	-6.57024E-7	2.32670E-6	-3.78993E-6	-7.26098E-5
e	-7.88027E-8	1.50755E-7	1.25692E-6	-4.45081E-6	7.25026E-6	1.38907E-4
i	-6.57024E-7	1.25692E-6	1.04814E-5	-3.71472E-5	6.04700E-5	1.15818E-3
Ω	2.32670E-6	-4.45081E-6	-3.71472E-5	1.32218E-4	-2.14511E-4	-4.10186E-3
ω	-3.78993E-6	7.25026E-6	6.04700E-5	-2.14511E-4	3.48977E-4	6.68084E-3
M	-7.26098E-5	1.38907E-4	1.15818E-3	-4.10186E-3	6.68084E-3	1.27992E-1

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

26.747

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

12 - 27*

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

912

Unit

Source

[1]

Normalized RMS of residuals

Value

0.613298

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-10-14.40515

Unit

Source

[2]

Last Observation

Value

2021-10-28.28381

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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 2021TS15 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	1954-12-11 03:52	> 1 mo	0.0254331	0.0068358	3.4390445
EARTH	1958-09-26 05:14	> 1 mo	0.0621794	0.0241220	3.7233310
VENUS	1960-01-18 13:08	> 1 mo	0.0264335	0.0248715	0.7356541
EARTH	1971-12-09 14:15	> 1 mo	0.0104570	0.0059458	0.1715061
EARTH	1975-10-30 15:60	> 1 w	0.0404304	0.0374384	0.0043021
EARTH	1979-09-30 17:14	> 1 w	0.0266953	0.0195497	0.1179064
EARTH	1983-09-28 17:20	> 1 d	0.1780771	0.0213882	0.3417676
VENUS	1996-05-03 23:49	> 1 mo	0.0292210	0.0270030	0.0412182
EARTH	2000-12-12 11:35	1347.5	0.1143886	0.0076550	0.1388724
EARTH	2004-11-28 07:10	> 1 mo	0.0246220	0.0097567	0.0386146
VENUS	2006-11-27 21:15	> 1 d	0.0154724	0.0042818	0.0213830
EARTH	2008-09-25 02:40	82.5	0.1093781	0.0432384	0.0227101
EARTH	2017-12-13 00:27	251.2	0.1713433	0.1439841	0.0091228
EARTH	2021-10-12 23:44	< 1 min	0.0353404	0.0351286	0.0000706
VENUS	2024-09-24 23:38	> 1 d	0.0080865	0.0049601	0.0049929
EARTH	2042-12-11 23:18	789.4	0.0708077	0.0079322	0.0527090
EARTH	2046-11-16 01:59	> 1 d	0.0358519	0.0282594	0.0028211
EARTH	2050-09-30 00:06	> 1 d	0.0236527	0.0181293	0.0233546
VENUS	2058-07-25 18:05	> 1 mo	0.0106073	0.0058695	0.0849635
VENUS	2068-11-24 13:59	> 1 mo	0.0295540	0.0284156	0.3069964
VENUS	2077-01-17 20:47	> 1 mo	0.0499849	0.0037219	5.3646349
EARTH	2079-12-08 20:49	> 1 w	0.1912765	0.0061109	2.0042751
EARTH	2083-12-10 17:20	> 1 mo	0.1104665	0.0091626	1.9247084
VENUS	2087-05-06 20:59	> 1 mo	0.0377398	0.0288363	3.7133155
EARTH	2087-12-09 21:37	> 1 mo	0.0550251	0.0056184	4.7628252
EARTH	2091-12-10 09:39	> 1 mo	0.0819495	0.0031262	1.4721631
EARTH	2095-12-09 17:30	> 1 d	0.1369165	0.0108600	2.4893991
VENUS	2108-12-16 07:10	> 1 mo	0.0337703	0.0280260	1.6141329
VENUS	2122-07-28 09:46	> 1 mo	0.0230603	0.0029481	9.9002502

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