Asteroids

2021VJ11 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.843

Aphelion (Q)

1.980

Eccentricity (e)

0.403

Inclination (i)

5.7

deg

Orbit period (P)

612.7

Earth MOID

0.00710

U parameter

7.9

Next Earth close approach

Date

2026-12-30

Nominal distance (from Earth center)

0.14105

21100364

Maximum Brightness

28.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-11-11

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.411710

1-sigma variation

0.000983

Unit

Eccentricity (e)

Value

0.402674

1-sigma variation

0.000503

Unit

Inclination (i)

Value

5.7102

1-sigma variation

0.0058

Unit

Long. of Ascending Node (Ω)

Value

62.4540

1-sigma variation

0.0017

Unit

Arg. of Perihelion (ω)

Value

56.2778

1-sigma variation

0.0027

Unit

Mean Anomaly (M)

Value

112.91971

1-sigma variation

0.86216

Unit

Perihelion distance

Value

0.843251

1-sigma variation

Unit

Aphelion distance

Value

1.980168

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.020425

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.508803

1-sigma variation

Unit

MOID

Value

0.007096

1-sigma variation

Unit

Orbit Period

Value

612.6556

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.66902E-7	4.94183E-7	5.73010E-6	1.70260E-6	-2.62334E-6	-8.47773E-4
e	4.94183E-7	2.52578E-7	2.92872E-6	8.70017E-7	-1.34026E-6	-4.33296E-4
i	5.73010E-6	2.92872E-6	3.39615E-5	1.00808E-5	-1.55221E-5	-5.02411E-3
Ω	1.70260E-6	8.70017E-7	1.00808E-5	3.02283E-6	-4.68309E-6	-1.49282E-3
ω	-2.62334E-6	-1.34026E-6	-1.55221E-5	-4.68309E-6	7.29420E-6	2.30010E-3
M	-8.47773E-4	-4.33296E-4	-5.02411E-3	-1.49282E-3	2.30010E-3	7.43321E-1

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

25.867

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

18 - 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

[-]

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

1445

Unit

Source

[1]

Normalized RMS of residuals

Value

0.500566

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-11-06.407868

Unit

Source

[2]

Last Observation

Value

2021-11-15.434945

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (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 2021VJ11 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	1962-11-25 07:23	> 1 mo	0.0365534	0.0091519	0.6330154
EARTH	1968-03-02 15:06	> 1 mo	0.1288924	0.0898531	0.2681008
EARTH	1989-11-15 19:41	> 1 w	0.0524020	0.0087283	0.1821807
EARTH	1995-01-19 21:39	> 1 mo	0.1593065	0.1507877	0.0144163
EARTH	2000-03-28 12:25	> 1 w	0.1089750	0.0866413	0.0881766
EARTH	2021-11-19 08:57	< 1 min	0.0174197	0.0173587	0.0000203
EARTH	2026-12-30 03:09	> 1 w	0.1410472	0.1034361	0.0133261
EARTH	2032-02-25 03:12	> 1 w	0.1407453	0.0952567	0.0269292
EARTH	2037-03-30 08:49	> 1 d	0.1153540	0.0859191	0.0600736
EARTH	2068-11-15 16:03	> 1 w	0.0597819	0.0073482	0.1411530
EARTH	2073-12-11 19:28	> 1 w	0.1039422	0.0401131	0.0222521
EARTH	2079-01-31 05:12	> 1 mo	0.1612358	0.1549079	0.0064981
EARTH	2084-03-20 22:10	> 1 w	0.0906740	0.0856866	0.0625222
EARTH	2089-04-04 21:11	> 1 w	0.1782010	0.0845679	0.3134028
MARS	2102-11-30 10:33	> 1 w	0.0349353	0.0093955	0.4747287
EARTH	2120-11-12 08:41	> 1 mo	0.1255083	0.0087186	0.6433280
EARTH	2125-11-29 10:23	> 1 mo	0.0507059	0.0070760	0.4451718

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
318.54398840	316.93590943	0.00712004	MINIMUM
44.75366642	80.19632222	0.08648159	MINIMUM
4.77946283	23.26165813	0.16178371	SADDLE
180.93972822	197.11439170	0.97174631	SADDLE
1.09971290	197.70278497	1.85718300	SADDLE
180.10311955	16.55873055	2.96220265	MAXIMUM

Download:

MOID Plots

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