Asteroids

2021TJ14 help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.779

Aphelion (Q)

1.381

Eccentricity (e)

0.279

Inclination (i)

9.3

deg

Orbit period (P)

409.8

Earth MOID

0.04398

U parameter

0.0

Next Earth close approach

Date

2030-10-27

Nominal distance (from Earth center)

0.17535

26232086

Maximum Brightness

23.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

24.6

mag

Diameter

30 - 70*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-13

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

1.079698

1-sigma variation

1.576E-9

Unit

Eccentricity (e)

Value

0.278815

1-sigma variation

3.525E-8

Unit

Inclination (i)

Value

9.2873

1-sigma variation

1.175E-5

Unit

Long. of Ascending Node (Ω)

Value

206.3716

1-sigma variation

1.018E-5

Unit

Arg. of Perihelion (ω)

Value

287.3584

1-sigma variation

1.591E-5

Unit

Mean Anomaly (M)

Value

343.17457

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.778662

1-sigma variation

Unit

Aphelion distance

Value

1.380734

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.084391

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.090342

1-sigma variation

Unit

MOID

Value

0.043979

1-sigma variation

Unit

Orbit Period

Value

409.7813

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.48373E-18	-1.85296E-18	7.87209E-15	1.24717E-16	4.12287E-15	-7.38556E-15
e	-1.85296E-18	1.24236E-15	4.87267E-14	5.72920E-14	2.34633E-14	5.57769E-14
i	7.87209E-15	4.87267E-14	1.37981E-10	5.20368E-11	3.36574E-11	-6.95989E-11
Ω	1.24717E-16	5.72920E-14	5.20368E-11	1.03677E-10	-1.15221E-10	1.47249E-11
ω	4.12287E-15	2.34633E-14	3.36574E-11	-1.15221E-10	2.53023E-10	-1.09867E-10
M	-7.38556E-15	5.57769E-14	-6.95989E-11	1.47249E-11	-1.09867E-10	9.02241E-11

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

24.555

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

30 - 70*

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

3878

Unit

Source

[1]

Unobserved

Value

773

Unit

Source

[1]

Normalized RMS of residuals

Value

0.666332

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-10-08.309679

Unit

Source

[2]

Last Observation

Value

2023-05-22.310116

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

52 (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 2021TJ14 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	1957-10-28 05:05	< 1 min	0.1634132	0.1634127	0.0000002
EARTH	1959-05-10 10:43	< 1 s	0.1428073	0.1428069	0.0000001
EARTH	1966-11-03 02:02	< 1 s	0.0485204	0.0485201	0.0000001
EARTH	1968-05-01 00:17	< 1 s	0.0464491	0.0464489	0.0000001
EARTH	1975-10-31 21:00	< 1 s	0.0793665	0.0793659	0.0000002
EARTH	1977-04-21 18:17	< 1 min	0.0927042	0.0927037	0.0000002
EARTH	2005-05-13 09:33	< 1 s	0.1961419	0.1961413	0.0000002
EARTH	2012-11-03 05:07	< 1 s	0.0827415	0.0827412	0.0000001
EARTH	2014-05-05 02:22	< 1 s	0.0693909	0.0693905	0.0000001
EARTH	2021-11-02 01:37	< 1 s	0.0484221	0.0484219	0.0000001
EARTH	2023-04-27 21:55	< 1 min	0.0612102	0.0612098	0.0000001
EARTH	2030-10-27 19:35	< 1 s	0.1753507	0.1753503	0.0000001
EARTH	2032-03-26 07:17	< 1 min	0.1771848	0.1771844	0.0000001
EARTH	2058-11-03 18:24	< 1 s	0.0914805	0.0914794	0.0000004
EARTH	2060-05-05 06:51	< 1 min	0.0744213	0.0744203	0.0000003
EARTH	2067-11-02 11:31	< 1 s	0.0525928	0.0525923	0.0000001
EARTH	2069-04-26 10:55	< 1 min	0.0690210	0.0690204	0.0000002
EARTH	2076-10-26 16:58	< 1 min	0.1955200	0.1955190	0.0000003
EARTH	2078-03-20 18:59	< 1 min	0.1908080	0.1908075	0.0000002
EARTH	2095-10-22 19:56	< 1 min	0.1937455	0.1937445	0.0000003
EARTH	2097-05-12 08:02	< 1 min	0.1685248	0.1685237	0.0000003
EARTH	2104-11-04 03:31	< 1 s	0.0524884	0.0524877	0.0000002
EARTH	2106-05-02 21:49	< 1 min	0.0489128	0.0489126	0.0000001
EARTH	2113-10-31 13:39	< 1 min	0.1114468	0.1114443	0.0000008
EARTH	2115-04-14 23:24	< 1 min	0.1294693	0.1294671	0.0000007

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
282.81486781	299.05027656	0.04432666	MINIMUM
71.09806487	117.95526894	0.04755390	MINIMUM
356.47818700	26.77532969	0.24744299	SADDLE
177.57802921	210.60889314	0.40995173	SADDLE
1.51136660	213.40524962	1.78746648	SADDLE
182.01868149	34.00490567	2.35921045	MAXIMUM

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MOID Plots

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