Asteroids

2020VK4 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.996

Aphelion (Q)

1.319

Eccentricity (e)

0.140

Inclination (i)

5.0

deg

Orbit period (P)

454.8

Earth MOID

0.01318

U parameter

6.0

Next Earth close approach

Date

2025-11-11

Nominal distance (from Earth center)

0.04149

6206607

Maximum Brightness

23.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 15*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-11-13

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

1.157400

1-sigma variation

0.000038

Unit

Eccentricity (e)

Value

0.139709

1-sigma variation

0.000010

Unit

Inclination (i)

Value

4.9871

1-sigma variation

0.0026

Unit

Long. of Ascending Node (Ω)

Value

234.4035

1-sigma variation

0.0046

Unit

Arg. of Perihelion (ω)

Value

199.3909

1-sigma variation

0.0276

Unit

Mean Anomaly (M)

Value

350.51058

1-sigma variation

0.11367

Unit

Perihelion distance

Value

0.995701

1-sigma variation

Unit

Aphelion distance

Value

1.319099

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.294574

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.013786

1-sigma variation

Unit

MOID

Value

0.013184

1-sigma variation

Unit

Orbit Period

Value

454.8032

1-sigma variation

Unit

U parameter

Value

6.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.47652E-9	4.00085E-10	-9.98267E-8	1.77074E-7	-1.06077E-6	4.36769E-6
e	4.00085E-10	1.08417E-10	-2.70501E-8	4.79808E-8	-2.87420E-7	1.18348E-6
i	-9.98267E-8	-2.70501E-8	6.74938E-6	-1.19718E-5	7.17175E-5	-2.95297E-4
Ω	1.77074E-7	4.79808E-8	-1.19718E-5	2.12358E-5	-1.27214E-4	5.23801E-4
ω	-1.06077E-6	-2.87420E-7	7.17175E-5	-1.27214E-4	7.62099E-4	-3.13787E-3
M	4.36769E-6	1.18348E-6	-2.95297E-4	5.23801E-4	-3.13787E-3	1.29200E-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

28.06

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

6 - 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

1791

Unit

Source

[1]

Normalized RMS of residuals

Value

0.626621

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-11-13.210505

Unit

Source

[2]

Last Observation

Value

2020-11-22.353226

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

65 (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 2020VK4 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	1969-11-21 05:00	112.8	0.0139041	0.0135706	0.0001170
EARTH	1974-11-05 17:52	122.0	0.0746882	0.0725512	0.0007123
EARTH	2015-12-10 05:15	500.1	0.0757738	0.0698609	0.0019733
EARTH	2020-11-19 14:34	< 1 min	0.0130757	0.0130658	0.0000033
EARTH	2025-11-11 01:48	483.2	0.0414886	0.0356697	0.0019458
EARTH	2061-12-16 03:53	> 1 d	0.0948169	0.0359514	0.0210205
EARTH	2066-11-12 14:36	> 1 d	0.0352827	0.0140283	0.0075505
EARTH	2092-11-18 01:38	> 1 mo	0.0135967	0.0132940	0.0372225
EARTH	2113-10-30 11:26	> 1 mo	0.1565341	0.0083922	20.0242510
EARTH	2114-03-13 06:24	> 1 mo	0.1882816	0.1473212	8.0462647

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
345.76521429	315.34609790	0.01351188	MINIMUM
180.69283898	151.26610580	0.30993858	SADDLE
356.82899747	147.87681839	2.01022960	SADDLE
177.06407401	328.10231869	2.30811940	MAXIMUM

Download:

MOID Plots

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