Asteroids

2021VT6 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.857

Aphelion (Q)

1.334

Eccentricity (e)

0.218

Inclination (i)

6.1

deg

Orbit period (P)

418.6

Earth MOID

0.01903

U parameter

5.4

Next Earth close approach

Date

2030-01-20

Nominal distance (from Earth center)

0.13645

20412139

Maximum Brightness

24.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.2

mag

Diameter

40 - 90*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-11-08

Observatory

Pan-STARRS 1, Haleakala

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.095211

1-sigma variation

0.000015

Unit

Eccentricity (e)

Value

0.217913

1-sigma variation

0.000019

Unit

Inclination (i)

Value

6.1010

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

73.2233

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

86.1108

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

102.76639

1-sigma variation

0.02340

Unit

Perihelion distance

Value

0.856550

1-sigma variation

Unit

Aphelion distance

Value

1.333871

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.042601

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.042681

1-sigma variation

Unit

MOID

Value

0.019029

1-sigma variation

Unit

Orbit Period

Value

418.6440

1-sigma variation

Unit

U parameter

Value

5.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.23769E-10	2.77299E-10	8.09328E-9	1.19655E-9	-2.14570E-9	-3.50012E-7
e	2.77299E-10	3.43698E-10	1.00307E-8	1.48377E-9	-2.64804E-9	-4.33744E-7
i	8.09328E-9	1.00307E-8	2.92793E-7	4.32908E-8	-7.73290E-8	-1.26593E-5
Ω	1.19655E-9	1.48377E-9	4.32908E-8	6.47461E-9	-1.13929E-8	-1.87163E-6
ω	-2.14570E-9	-2.64804E-9	-7.73290E-8	-1.13929E-8	2.26054E-8	3.35556E-6
M	-3.50012E-7	-4.33744E-7	-1.26593E-5	-1.87163E-6	3.35556E-6	5.47476E-4

Date of computation: 2025-09-10 00:30 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

24.189

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

40 - 90*

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

1415

Unit

Source

[1]

Normalized RMS of residuals

Value

0.444551

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-11-08.491722

Unit

Source

[2]

Last Observation

Value

2021-12-16.737638

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

97 (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

Close Approaches for 2021VT6 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	1953-05-29 17:37	418.1	0.1054812	0.0841436	0.0071469
EARTH	1959-12-10 06:17	718.3	0.0905806	0.0568725	0.0113529
EARTH	1967-12-28 11:38	> 1 d	0.1072928	0.0830558	0.0080800
EARTH	1976-03-29 16:17	> 1 d	0.1551970	0.1526497	0.0008503
EARTH	1976-06-09 08:09	> 1 d	0.1825743	0.1759486	0.0022132
EARTH	1984-05-25 17:07	224.0	0.0350827	0.0281899	0.0025046
EARTH	1990-12-10 06:23	265.7	0.0982870	0.0853796	0.0043131
EARTH	1998-11-23 05:49	> 1 d	0.1915984	0.1837354	0.0026302
EARTH	1999-02-11 21:03	> 1 d	0.1574108	0.1546344	0.0009264
EARTH	2007-05-23 18:55	153.8	0.0303985	0.0269946	0.0012140
EARTH	2015-06-04 02:20	48.5	0.1970326	0.1943681	0.0008882
EARTH	2021-12-14 10:38	< 1 s	0.0198068	0.0198017	0.0000017
EARTH	2030-01-20 23:11	849.4	0.1364467	0.1345497	0.0006326
EARTH	2038-03-22 00:23	> 1 d	0.1614246	0.1603224	0.0003677
EARTH	2046-05-21 07:32	267.2	0.0599484	0.0535303	0.0021527
EARTH	2054-05-27 18:39	79.1	0.0485320	0.0456579	0.0009638
EARTH	2060-12-05 11:44	91.2	0.1881394	0.1841483	0.0013305
EARTH	2068-12-14 11:05	341.2	0.0205503	0.0202718	0.0006557
EARTH	2076-12-28 22:31	> 1 w	0.1110394	0.0028309	0.0417889
EARTH	2085-03-02 21:28	> 1 mo	0.1664197	0.1609992	0.0018068
EARTH	2093-05-01 10:56	> 1 mo	0.1215038	0.0134739	0.0688879
EARTH	2101-05-26 01:15	> 1 d	0.0191074	0.0180587	0.0248168
EARTH	2109-05-30 06:59	> 1 mo	0.0720318	0.0171173	0.7875863
EARTH	2123-12-13 00:33	> 1 w	0.0742277	0.0206614	0.6140803

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
295.21152150	340.61149695	0.01937842	MINIMUM
72.04710752	141.01301003	0.01982405	MINIMUM
4.12548439	61.29190591	0.16691600	SADDLE
182.88931083	240.01597722	0.34806556	SADDLE
4.32002934	241.51880878	1.86211757	SADDLE
182.67154463	59.82925913	2.32198283	MAXIMUM

Download:

MOID Plots

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