Asteroids

2021JV help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.950

Aphelion (Q)

2.818

Eccentricity (e)

0.496

Inclination (i)

5.5

deg

Orbit period (P)

944.4

Earth MOID

0.00040

U parameter

6.8

Next Earth close approach

Date

2052-05-26

Nominal distance (from Earth center)

0.06961

10412827

Maximum Brightness

28.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-05-03

Observatory

ATLAS-HKO, 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

1.883836

1-sigma variation

0.000442

Unit

Eccentricity (e)

Value

0.495860

1-sigma variation

0.000122

Unit

Inclination (i)

Value

5.5084

1-sigma variation

0.0008

Unit

Long. of Ascending Node (Ω)

Value

224.4996

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

34.7030

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

262.82147

1-sigma variation

0.21643

Unit

Perihelion distance

Value

0.949717

1-sigma variation

Unit

Aphelion distance

Value

2.817955

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.000987

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.407693

1-sigma variation

Unit

MOID

Value

0.000404

1-sigma variation

Unit

Orbit Period

Value

944.4155

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.95756E-7	5.41038E-8	3.48371E-7	-2.79118E-8	7.65672E-7	-9.57568E-5
e	5.41038E-8	1.49568E-8	9.60324E-8	-7.50906E-9	2.13297E-7	-2.64662E-5
i	3.48371E-7	9.60324E-8	6.40862E-7	-6.58850E-8	1.23964E-6	-1.70369E-4
Ω	-2.79118E-8	-7.50906E-9	-6.58850E-8	1.71632E-8	-8.70317E-9	1.36197E-5
ω	7.65672E-7	2.13297E-7	1.23964E-6	-8.70317E-9	3.81987E-6	-3.74814E-4
M	-9.57568E-5	-2.64662E-5	-1.70369E-4	1.36197E-5	-3.74814E-4	4.68409E-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

27.362

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

9 - 20*

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

0.8

Unit

Source

[1]

Unobserved

Value

1634

Unit

Source

[1]

Normalized RMS of residuals

Value

0.542073

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-05-03.377864

Unit

Source

[2]

Last Observation

Value

2021-05-04.218057

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (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 2021JV 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	1962-05-07 17:48	> 1 mo	0.0160172	0.0021293	0.5657687
16 Psyche	1971-01-07 17:15	> 1 mo	0.0146146	0.0096715	0.0614255
EARTH	1989-08-04 19:09	> 1 d	0.1350825	0.0873180	0.0507456
EARTH	1994-04-30 04:45	> 1 d	0.0332285	0.0013955	0.0514728
EARTH	2021-05-04 21:28	< 1 min	0.0009361	0.0009355	0.0000002
EARTH	2052-05-26 17:47	> 1 w	0.0696055	0.0222790	0.0303195
EARTH	2083-07-21 01:41	> 1 d	0.0947483	0.0915724	0.0037325
EARTH	2096-04-30 12:54	38.6	0.0278317	0.0273810	0.0001502
EARTH	2114-07-17 13:06	> 1 d	0.0914658	0.0912942	0.0011987

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
339.53251634	121.56498535	0.00000764	MINIMUM
16.95726971	185.71379525	0.09003256	MINIMUM
9.23183134	172.49601751	0.09126717	SADDLE
180.45390680	337.18501362	1.83604257	SADDLE
0.86252450	337.91309416	1.93365904	SADDLE
180.11535597	156.99377107	3.83257200	MAXIMUM

Download:

MOID Plots

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