Asteroids

2021GF10 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.880

Aphelion (Q)

3.296

Eccentricity (e)

0.578

Inclination (i)

8.2

deg

Orbit period (P)

1102.1

Earth MOID

0.00018

U parameter

6.7

Next Earth close approach

Date

2027-05-14

Nominal distance (from Earth center)

0.13437

20102172

Maximum Brightness

29.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.9

mag

Diameter

7 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-04-14

Observatory

MAPS, San Pedro de Atacama

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

2.088045

1-sigma variation

0.000428

Unit

Eccentricity (e)

Value

0.578471

1-sigma variation

0.000104

Unit

Inclination (i)

Value

8.1935

1-sigma variation

0.0016

Unit

Long. of Ascending Node (Ω)

Value

205.2920

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

48.6700

1-sigma variation

0.0024

Unit

Mean Anomaly (M)

Value

178.25657

1-sigma variation

0.21668

Unit

Perihelion distance

Value

0.880170

1-sigma variation

Unit

Aphelion distance

Value

3.295919

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000462

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.252121

1-sigma variation

Unit

MOID

Value

0.000181

1-sigma variation

Unit

Orbit Period

Value

1102.0672

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.83387E-7	4.45356E-8	6.81839E-7	1.81506E-7	1.01392E-6	-9.27916E-5
e	4.45356E-8	1.08156E-8	1.65589E-7	4.40792E-8	2.46260E-7	-2.25345E-5
i	6.81839E-7	1.65589E-7	2.53541E-6	6.74870E-7	3.77127E-6	-3.45003E-4
Ω	1.81506E-7	4.40792E-8	6.74870E-7	1.79647E-7	1.00368E-6	-9.18399E-5
ω	1.01392E-6	2.46260E-7	3.77127E-6	1.00368E-6	5.61828E-6	-5.13033E-4
M	-9.27916E-5	-2.25345E-5	-3.45003E-4	-9.18399E-5	-5.13033E-4	4.69515E-2

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

27.947

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

7 - 15*

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

1622

Unit

Source

[1]

Normalized RMS of residuals

Value

0.629092

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-04-14.14335

Unit

Source

[2]

Last Observation

Value

2021-04-15.62553

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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

[-]

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 2021GF10 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	1958-04-08 18:43	> 1 mo	0.0566480	0.0085687	0.6498049
EARTH	2001-07-06 23:08	> 1 w	0.1576429	0.1503499	0.0253912
EARTH	2011-04-18 08:22	> 1 d	0.0253421	0.0045712	0.0252761
EARTH	2021-04-15 09:28	< 1 s	0.0007739	0.0007735	0.0000001
EARTH	2024-04-23 14:41	> 1 d	0.0618902	0.0404578	0.0071518
EARTH	2027-05-14 20:44	> 1 d	0.1343747	0.1120753	0.0075193
EARTH	2030-06-10 07:23	> 1 d	0.1722268	0.1671207	0.0020497
EARTH	2033-07-09 17:33	> 1 d	0.1606733	0.1498842	0.0057887
EARTH	2036-07-27 23:40	> 1 d	0.1431088	0.1430314	0.0008694
EARTH	2039-08-09 04:14	> 1 d	0.1933824	0.1461451	0.0230869

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
333.74575773	102.18520629	0.00001104	MINIMUM
27.49741795	202.87644329	0.14316622	MINIMUM
6.36721785	163.44961945	0.17542419	SADDLE
1.09936664	333.07519269	1.86148391	SADDLE
180.53204364	331.82899016	2.31831814	SADDLE
180.00005920	151.55903175	4.30565562	MAXIMUM

Download:

MOID Plots

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