Asteroids

2021TX14 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.798

Aphelion (Q)

1.873

Eccentricity (e)

0.402

Inclination (i)

1.8

deg

Orbit period (P)

563.8

Earth MOID

0.00333

U parameter

7.7

Next Earth close approach

Date

2038-10-09

Nominal distance (from Earth center)

0.1526

22828610

Maximum Brightness

25.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.5

mag

Diameter

13 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-10-07

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.335561

1-sigma variation

0.000638

Unit

Eccentricity (e)

Value

0.402230

1-sigma variation

0.000406

Unit

Inclination (i)

Value

1.7703

1-sigma variation

0.0027

Unit

Long. of Ascending Node (Ω)

Value

199.6802

1-sigma variation

0.0026

Unit

Arg. of Perihelion (ω)

Value

258.4831

1-sigma variation

0.0071

Unit

Mean Anomaly (M)

Value

328.08356

1-sigma variation

0.78776

Unit

Perihelion distance

Value

0.798358

1-sigma variation

Unit

Aphelion distance

Value

1.872764

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.216680

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.037270

1-sigma variation

Unit

MOID

Value

0.003329

1-sigma variation

Unit

Orbit Period

Value

563.7598

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.06804E-7	2.58811E-7	1.73623E-6	1.65882E-6	-4.50280E-6	-5.02439E-4
e	2.58811E-7	1.64658E-7	1.10458E-6	1.05534E-6	-2.86463E-6	-3.19655E-4
i	1.73623E-6	1.10458E-6	7.41261E-6	7.08149E-6	-1.92228E-5	-2.14440E-3
Ω	1.65882E-6	1.05534E-6	7.08149E-6	6.76600E-6	-1.83646E-5	-2.04879E-3
ω	-4.50280E-6	-2.86463E-6	-1.92228E-5	-1.83646E-5	4.98568E-5	5.56136E-3
M	-5.02439E-4	-3.19655E-4	-2.14440E-3	-2.04879E-3	5.56136E-3	6.20557E-1

Date of computation: 2026-03-17 23:26 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

26.506

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

13 - 30*

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

[-]

Download this part as:

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

1635

Unit

Source

[1]

Normalized RMS of residuals

Value

0.714247

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-10-07.219642

Unit

Source

[2]

Last Observation

Value

2021-10-17.920575

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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

[-]

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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2021TX14 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1956-12-02 11:32	> 1 mo	0.1676515	0.0235494	0.5998080
EARTH	1960-03-15 17:07	> 1 mo	0.0873444	0.0183473	1.7646271
EARTH	1973-11-07 09:18	> 1 mo	0.1146866	0.0030131	0.3741048
EARTH	1977-03-10 06:02	> 1 w	0.0193685	0.0185853	0.0316843
EARTH	1990-11-12 14:20	> 1 w	0.1271948	0.0062209	0.0505898
EARTH	1994-03-14 08:15	> 1 w	0.0574454	0.0182985	0.1076565
EARTH	2008-01-04 14:37	> 1 w	0.1856217	0.1716946	0.0046847
EARTH	2021-10-19 15:06	< 1 min	0.0034273	0.0034166	0.0000036
EARTH	2025-02-19 08:33	> 1 d	0.1151826	0.0812920	0.0113273
EARTH	2038-10-09 13:24	> 1 d	0.1525998	0.0026498	0.0683755
EARTH	2042-01-03 13:15	> 1 mo	0.1862966	0.1737259	0.0042253
EARTH	2058-11-17 15:25	> 1 mo	0.1370436	0.0049616	0.1432210
EARTH	2062-03-13 19:34	> 1 w	0.0345543	0.0148231	0.2097815
EARTH	2075-12-08 10:15	> 1 mo	0.1717807	0.0214303	0.1793388
EARTH	2079-03-21 23:40	> 1 mo	0.1539205	0.0141314	0.7992690
EARTH	2093-01-09 21:41	> 1 mo	0.1830330	0.0310226	0.1640193
EARTH	2106-10-13 19:52	> 1 mo	0.1134586	0.0039179	1.2260090
EARTH	2110-01-29 09:13	> 1 mo	0.1636841	0.0104795	0.4207141
EARTH	2123-10-19 09:10	> 1 w	0.0366607	0.0045863	0.2478279

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
309.14321504	285.68190903	0.00337592	MINIMUM
50.71637326	67.89381630	0.01521459	MINIMUM
359.97837909	356.88021987	0.18710310	SADDLE
179.96055331	176.79093190	0.85572478	SADDLE
359.84757487	176.68642953	1.81632708	SADDLE
179.92474396	356.76836439	2.85612503	MAXIMUM

Download:

MOID Plots

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