Asteroids

2021TJ14

Last update: 2021-12-06 14:32 UTC

Orbital Properties

Epoch

59600.0

MJD

Orbit type

Apollo

Perihelion (q)

0.779

Aphelion (Q)

1.381

Eccentricity (e)

0.279

Inclination (i)

9.3

deg

Orbit period (P)

410

days

Earth MOID

0.04471

Next Earth close approach

Date

2023-04-27

Nominal distance (from Earth center)

0.06112

9143251

Maximum Brightness

23.3

Orbit Visualiser

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Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

24.6

Diameter

40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-13

Observatory

Mt. Lemmon Survey

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period

Value

1-sigma variation

Unit

Epoch

Value

59600.0

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.08

1-sigma variation

2.4984E-4

Unit

Eccentricity (e)

Value

0.278879873958733

1-sigma variation

3.04255E-4

Unit

Inclination (i)

Value

9.3

1-sigma variation

1.160E-2

Unit

Ascending Node (Ω)

Value

206.42

1-sigma variation

3.247E-3

Unit

Arg. of Perihelion (ω)

Value

287.43

1-sigma variation

9.850E-3

Unit

Mean Anomaly (M)

Value

9.02

1-sigma variation

1.741E-2

Unit

Perihelion

Value

7.789E-1

1-sigma variation

Unit

Aphelion

Value

1.38

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-8.382E-2

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

9.190E-2

1-sigma variation

Unit

MOID

Value

4.471E-2

1-sigma variation

Unit

Orbit Period

Value

410

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.24201E-8	7.60139E-8	2.89830E-6	8.11254E-7	-2.46050E-6	4.34976E-6
e	7.60139E-8	9.25709E-8	3.52951E-6	9.87960E-7	-2.99608E-6	5.29709E-6
i	2.89830E-6	3.52951E-6	1.34575E-4	3.76687E-5	-1.14243E-4	2.01969E-4
Ω	8.11254E-7	9.87960E-7	3.76687E-5	1.05442E-5	-3.19755E-5	5.65329E-5
ω	-2.46050E-6	-2.99608E-6	-1.14243E-4	-3.19755E-5	9.70150E-5	-1.71457E-4
M	4.34976E-6	5.29709E-6	2.01969E-4	5.65329E-5	-1.71457E-4	3.03115E-4

Date of computation: 2021-11-10 09:40 UTC

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

24.639

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

40*

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

**Estimated value

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

days

Source

[1]

Unobserved

Value

Unit

days

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.715726

Unit

arcseconds

Source

[1]

First Observation

Value

2021-10-13.331698

Unit

Source

[2]

Last Observation

Value

2021-10-31.505928

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

37 (1)

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 2021TJ14 from 1950 to 2121

Body	Date	MJD	Nominal distance (au)	Min possible distance (au)	Stretching (au)	Width (au)	Close approach probability
EARTH	1957-10-28.51053	36139.5	0.1616867	0.0689408	2.360E-2	3.312E-7	7.86E-1
EARTH	1959-05-10.33789	36698.3	0.1410419	0.0459748	2.396E-2	7.347E-7	9.30E-1
EARTH	1966-11-03.06383	39432.1	0.0480429	0.0432772	1.352E-2	1.207E-7	1.00E0
EARTH	1968-04-30.92194	39976.9	0.0463357	0.0461725	1.467E-2	9.463E-7	1.00E0
EARTH	1975-10-31.77726	42716.8	0.0816211	0.0434765	3.328E-2	1.200E-7	1.00E0
EARTH	1977-04-21.32140	43254.3	0.0950453	0.0467550	3.486E-2	1.350E-6	1.00E0
EARTH	2005-05-13.26056	53503.3	0.1937561	0.0568064	3.072E-2	6.268E-7	5.35E-1
EARTH	2012-11-03.21846	56234.2	0.0814247	0.0439320	1.930E-2	1.081E-7	1.00E0
EARTH	2014-05-04.99961	56782.0	0.0683589	0.0466967	1.759E-2	8.808E-7	1.00E0
EARTH	2021-11-02.06799	59520.1	0.0484266	0.0482578	5.616E-5	2.917E-8	1.00E0
EARTH	2023-04-27.92913	60061.9	0.0611189	0.0575566	1.880E-3	1.146E-6	1.00E0
EARTH	2030-10-27.88105	62801.9	0.1738034	0.1015114	1.970E-2	1.175E-7	7.28E-1
EARTH	2032-03-26.76775	63317.8	0.1761250	0.1308263	1.668E-2	1.891E-6	7.92E-1
EARTH	2058-11-03.68674	73035.7	0.0961426	0.0446809	6.587E-2	1.310E-7	7.78E-1
EARTH	2060-05-05.64127	73584.6	0.0784300	0.0477539	6.454E-2	8.743E-7	8.42E-1
EARTH	2067-11-02.59577	76321.6	0.0505918	0.0448208	4.993E-2	1.110E-7	1.00E0
EARTH	2069-04-26.90001	76862.9	0.0664097	0.0486069	4.857E-2	1.176E-6	1.00E0
EARTH	2076-10-26.89813	79602.9	0.1908505	0.0448363	6.568E-2	1.203E-7	5.24E-1
EARTH	2078-03-22.02065	80114.0	0.1882054	0.0444077	4.846E-2	1.913E-6	5.52E-1
EARTH	2095-10-21.97476	86537.0	0.1976637	0.0449949	6.785E-2	6.066E-7	5.06E-1
EARTH	2097-05-12.59566	87105.6	0.1728328	0.0489193	7.386E-2	6.664E-7	5.64E-1
EARTH	2104-11-04.20875	89837.2	0.0545781	0.0454075	6.888E-2	1.570E-7	8.98E-1
EARTH	2106-05-03.23569	90382.2	0.0492341	0.0489620	7.097E-2	9.599E-7	9.11E-1
EARTH	2113-10-31.95473	93121.0	0.1023156	0.0454280	1.749E-1	1.137E-7	3.71E-1
EARTH	2115-04-17.41597	93653.4	0.1209811	0.0494484	1.758E-1	1.503E-6	3.59E-1

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