Asteroids

2021GV help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.599

Aphelion (Q)

3.187

Eccentricity (e)

0.684

Inclination (i)

3.2

deg

Orbit period (P)

951.1

Earth MOID

0.00060

U parameter

7.5

Next Earth close approach

Date

2039-10-14

Nominal distance (from Earth center)

0.13148

19669605

Maximum Brightness

27.8

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

29.1

mag

Diameter

4 - 9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-04-03

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

1.892650

1-sigma variation

0.001160

Unit

Eccentricity (e)

Value

0.683735

1-sigma variation

0.000233

Unit

Inclination (i)

Value

3.2189

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

192.7421

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

91.3239

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

186.40111

1-sigma variation

0.49515

Unit

Perihelion distance

Value

0.598579

1-sigma variation

Unit

Aphelion distance

Value

3.186720

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.024144

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.007356

1-sigma variation

Unit

MOID

Value

0.000597

1-sigma variation

Unit

Orbit Period

Value

951.0511

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.34646E-6	2.69875E-7	1.36612E-6	-9.04071E-7	1.21852E-6	-5.74555E-4
e	2.69875E-7	5.41000E-8	2.74726E-7	-1.81095E-7	2.45962E-7	-1.15160E-4
i	1.36612E-6	2.74726E-7	1.50986E-6	-9.00995E-7	1.42867E-6	-5.82957E-4
Ω	-9.04071E-7	-1.81095E-7	-9.00995E-7	6.09485E-7	-7.95194E-7	3.85781E-4
ω	1.21852E-6	2.45962E-7	1.42867E-6	-7.95194E-7	1.47281E-6	-5.19981E-4
M	-5.74555E-4	-1.15160E-4	-5.82957E-4	3.85781E-4	-5.19981E-4	2.45172E-1

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

29.104

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

4 - 9*

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

0.9

Unit

Source

[1]

Unobserved

Value

1551

Unit

Source

[1]

Normalized RMS of residuals

Value

0.658825

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-04-03.277621

Unit

Source

[2]

Last Observation

Value

2021-04-04.134942

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2021GV 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	1954-10-07 10:40	> 1 d	0.0076363	0.0019586	0.0225847
EARTH	1972-09-29 05:08	841.1	0.1188898	0.0932786	0.0085371
VENUS	1998-03-24 00:30	> 1 d	0.0393048	0.0036330	0.0228132
VENUS	2013-08-15 22:00	> 1 d	0.0373975	0.0037287	0.0459419
EARTH	2021-04-04 17:22	< 1 min	0.0022419	0.0022397	0.0000007
VENUS	2026-07-14 23:51	> 1 d	0.0101328	0.0038120	0.0304926
EARTH	2039-10-14 03:06	> 1 mo	0.1314832	0.0016248	0.6911207
MARS	2066-01-05 16:32	> 1 w	0.0383447	0.0330643	0.1829911
EARTH	2068-04-03 12:48	> 1 w	0.0238499	0.0040545	0.3795858
EARTH	2081-04-14 03:09	> 1 mo	0.1373991	0.0031009	2.4760091
EARTH	2086-10-03 21:22	> 1 mo	0.0613873	0.0038407	4.2440556
EARTH	2099-10-12 10:23	> 1 mo	0.0836434	0.0042000	3.9099860

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
46.24226327	272.19103257	0.00009633	MINIMUM
313.67092433	92.04692375	0.00187269	MINIMUM
359.92809363	182.07566676	0.41847115	SADDLE
359.93563777	2.09150483	1.58257902	SADDLE
179.98626857	2.16427608	2.20452372	SADDLE
179.98827095	182.16475057	4.20040381	MAXIMUM

Download:

MOID Plots

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