Asteroids

2020VA4 help

Last update: 2025-02-22 05:33 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.842

Aphelion (Q)

1.123

Eccentricity (e)

0.143

Inclination (i)

0.4

deg

Orbit period (P)

355.8

Earth MOID

0.00218

U parameter

2.4

Next Earth close approach

Date

2025-03-30

Nominal distance (from Earth center)

0.02971

4444090

Maximum Brightness

23.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.3

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-11-12

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

0.982608

1-sigma variation

1.237E-7

Unit

Eccentricity (e)

Value

0.143227

1-sigma variation

0.000003

Unit

Inclination (i)

Value

0.3699

1-sigma variation

5.337E-6

Unit

Long. of Ascending Node (Ω)

Value

350.5066

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

304.6082

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

308.49715

1-sigma variation

0.00053

Unit

Perihelion distance

Value

0.841872

1-sigma variation

Unit

Aphelion distance

Value

1.123344

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.115253

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.053333

1-sigma variation

Unit

MOID

Value

0.002177

1-sigma variation

Unit

Orbit Period

Value

355.7696

1-sigma variation

Unit

U parameter

Value

2.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.53076E-14	-3.07463E-13	-5.97982E-13	-2.08724E-11	3.44599E-11	-5.87635E-11
e	-3.07463E-13	6.60165E-12	1.32608E-11	3.67341E-10	-7.07049E-10	1.32671E-9
i	-5.97982E-13	1.32608E-11	2.84790E-11	1.04458E-9	-1.77320E-9	2.72722E-9
Ω	-2.08724E-11	3.67341E-10	1.04458E-9	1.59146E-7	-1.69429E-7	6.22798E-8
ω	3.44599E-11	-7.07049E-10	-1.77320E-9	-1.69429E-7	2.02371E-7	-1.37518E-7
M	-5.87635E-11	1.32671E-9	2.72722E-9	6.22798E-8	-1.37518E-7	2.76018E-7

Date of computation: 2025-02-19 13:28 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

27.329

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

1188

Unit

Source

[1]

Unobserved

Value

375

Unit

Source

[1]

Normalized RMS of residuals

Value

0.695725

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-11-12.282205

Unit

Source

[2]

Last Observation

Value

2024-02-13.26169

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

71 (2)

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 2020VA4 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	1967-11-08 12:40	23.6	0.1984005	0.1942337	0.0013890
EARTH	1968-11-01 15:39	49.1	0.0144679	0.0120020	0.0008332
EARTH	1969-09-22 19:48	1024.7	0.1174208	0.1161772	0.0004146
EARTH	1969-12-04 02:21	654.1	0.1064569	0.1053559	0.0003670
EARTH	1970-08-09 11:36	649.4	0.1652686	0.1650837	0.0000616
EARTH	1971-01-13 00:21	353.0	0.1420157	0.1418783	0.0000458
EARTH	1971-07-05 18:07	388.9	0.1697291	0.1695874	0.0000472
EARTH	1972-02-19 04:43	120.4	0.1211231	0.1210409	0.0000274
EARTH	1972-05-26 02:10	145.4	0.1351710	0.1350039	0.0000557
EARTH	1973-04-03 00:57	1.2	0.0184901	0.0181320	0.0001194
EARTH	1974-03-31 13:39	5.6	0.0881457	0.0877408	0.0001350
EARTH	2019-11-02 15:52	< 1 min	0.0931323	0.0931224	0.0000033
EARTH	2020-10-29 20:54	< 1 min	0.0164986	0.0164980	0.0000002
EARTH	2021-09-06 09:04	< 1 min	0.1357613	0.1357544	0.0000023
EARTH	2021-12-13 06:43	< 1 min	0.1215801	0.1215741	0.0000020
EARTH	2022-07-28 03:00	< 1 min	0.1703917	0.1703833	0.0000028
EARTH	2023-01-20 13:16	< 1 min	0.1410089	0.1410022	0.0000022
EARTH	2023-06-22 09:02	1.1	0.1643882	0.1643804	0.0000026
EARTH	2024-03-03 15:29	< 1 min	0.0990642	0.0990604	0.0000013
EARTH	2024-05-02 09:40	1.2	0.1094528	0.1094485	0.0000014
EARTH	2025-03-30 15:04	< 1 min	0.0297069	0.0297028	0.0000014
EARTH	2026-03-25 07:34	< 1 min	0.1924739	0.1924670	0.0000023
EARTH	2057-11-01 20:18	1.9	0.0578882	0.0577428	0.0000485
EARTH	2058-11-21 17:13	34.8	0.0890214	0.0889385	0.0000276
EARTH	2059-08-11 06:01	28.3	0.1648312	0.1648143	0.0000056
EARTH	2060-01-10 00:57	19.7	0.1395917	0.1395769	0.0000049
EARTH	2060-07-02 06:14	11.4	0.1711668	0.1711648	0.0000007
EARTH	2061-02-21 06:30	3.7	0.1133689	0.1133604	0.0000029
EARTH	2061-05-17 00:42	5.2	0.1274679	0.1274611	0.0000023
EARTH	2062-03-31 11:23	1.6	0.0153399	0.0152939	0.0000153
EARTH	2087-11-10 01:00	32.0	0.1889468	0.1862424	0.0009014
EARTH	2088-11-03 12:16	27.6	0.0159521	0.0133255	0.0008838
EARTH	2089-08-14 16:09	975.8	0.1698139	0.1689274	0.0002955
EARTH	2090-01-14 17:22	961.6	0.1310583	0.1304976	0.0001870
EARTH	2090-06-18 13:12	> 1 d	0.1706492	0.1699766	0.0002242
EARTH	2091-03-28 14:57	77.6	0.0186591	0.0086493	0.0033738
EARTH	2092-03-22 08:24	169.2	0.1885604	0.1868718	0.0005629
EARTH	2116-11-02 08:08	> 1 d	0.0344072	0.0044904	0.0932749
EARTH	2117-09-09 08:37	> 1 mo	0.1372900	0.0949111	0.0141449
EARTH	2117-12-17 01:37	> 1 w	0.1185723	0.0729240	0.0152539
EARTH	2118-07-19 08:45	> 1 w	0.1768410	0.1583858	0.0061574
EARTH	2119-02-08 02:27	> 1 w	0.1243252	0.0728513	0.0171580
EARTH	2119-05-29 23:00	> 1 mo	0.1456213	0.0943363	0.0171008
EARTH	2120-03-29 19:34	> 1 d	0.0159059	0.0025745	0.1064672

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
264.18174250	87.64777454	0.00220918	MINIMUM
93.10509025	294.72412634	0.00461762	MINIMUM
178.78675374	11.33801318	0.14263850	SADDLE
358.41041326	190.94343547	0.17236346	SADDLE
358.49106407	11.03093240	1.82703029	SADDLE
178.80394075	191.34707772	2.14183132	MAXIMUM

Download:

MOID Plots

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