Asteroids

2020RK2 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.992

Aphelion (Q)

2.553

Eccentricity (e)

0.440

Inclination (i)

0.8

deg

Orbit period (P)

861.8

Earth MOID

0.01395

U parameter

5.7

Next Earth close approach

Date

2053-12-05

Nominal distance (from Earth center)

0.10814

16178152

Maximum Brightness

21.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.4

mag

Diameter

110

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-09-10

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

1.772373

1-sigma variation

0.000069

Unit

Eccentricity (e)

Value

0.440279

1-sigma variation

0.000022

Unit

Inclination (i)

Value

0.8189

1-sigma variation

3.661E-5

Unit

Long. of Ascending Node (Ω)

Value

299.6869

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

98.1035

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

329.69528

1-sigma variation

0.03997

Unit

Perihelion distance

Value

0.992034

1-sigma variation

Unit

Aphelion distance

Value

2.552712

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.504100

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.363854

1-sigma variation

Unit

MOID

Value

0.013946

1-sigma variation

Unit

Orbit Period

Value

861.8486

1-sigma variation

Unit

U parameter

Value

5.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.72320E-9	1.48675E-9	2.51412E-9	2.58167E-8	-2.87041E-8	-2.74668E-6
e	1.48675E-9	4.67993E-10	7.91374E-10	8.12538E-9	-9.03401E-9	-8.64588E-7
i	2.51412E-9	7.91374E-10	1.34059E-9	1.40659E-8	-1.56059E-8	-1.46203E-6
Ω	2.58167E-8	8.12538E-9	1.40659E-8	1.98480E-7	-2.14756E-7	-1.50130E-5
ω	-2.87041E-8	-9.03401E-9	-1.56059E-8	-2.14756E-7	2.32973E-7	1.66920E-5
M	-2.74668E-6	-8.64588E-7	-1.46203E-6	-1.50130E-5	1.66920E-5	1.59727E-3

Date of computation: 2025-07-29 02:36 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

24.356

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.03

Unit

Source

[2]

Diameter

Value

110

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]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

116

Unit

Source

[1]

Unobserved

Value

1693

Unit

Source

[1]

Normalized RMS of residuals

Value

0.636154

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-09-10.21949

Unit

Source

[2]

Last Observation

Value

2021-01-04.44758

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

160 (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 2020RK2 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	1956-11-03 13:35	> 1 mo	0.0148685	0.0146211	0.0063129
EARTH	1975-10-15 16:27	> 1 d	0.0156843	0.0143129	0.0016193
EARTH	2001-12-10 22:06	635.3	0.1842779	0.1640553	0.0067429
EARTH	2020-10-07 13:10	< 1 s	0.0255815	0.0255781	0.0000011
EARTH	2053-12-05 04:31	> 1 d	0.1081443	0.0794104	0.0096023
EARTH	2079-11-12 00:37	> 1 d	0.0153862	0.0137805	0.0009815
EARTH	2124-10-30 17:12	> 1 mo	0.0145185	0.0053255	0.0031994

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
2.56009069	300.47147618	0.01394590	MINIMUM
179.31473053	114.79686073	1.54606473	SADDLE
358.22432323	113.58080059	1.99863987	SADDLE
179.32681070	294.80898720	3.54555622	MAXIMUM

Download:

MOID Plots

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