Asteroids

2022RK help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.625

Aphelion (Q)

1.097

Eccentricity (e)

0.274

Inclination (i)

10.9

deg

Orbit period (P)

291.7

Earth MOID

0.02145

U parameter

6.8

Next Earth close approach

Date

2026-09-06

Nominal distance (from Earth center)

0.03542

5299071

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-09-01

Observatory

ATLAS South Africa, Sutherland

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.860827

1-sigma variation

0.000057

Unit

Eccentricity (e)

Value

0.273819

1-sigma variation

0.000174

Unit

Inclination (i)

Value

10.9400

1-sigma variation

0.0105

Unit

Long. of Ascending Node (Ω)

Value

157.7943

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

328.8266

1-sigma variation

0.0038

Unit

Mean Anomaly (M)

Value

131.12985

1-sigma variation

0.18790

Unit

Perihelion distance

Value

0.625116

1-sigma variation

Unit

Aphelion distance

Value

1.096537

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.344909

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.029967

1-sigma variation

Unit

MOID

Value

0.021446

1-sigma variation

Unit

Orbit Period

Value

291.7240

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.25925E-9	-9.81939E-9	-5.96699E-7	7.29239E-9	-1.51425E-7	-1.07204E-5
e	-9.81939E-9	3.01115E-8	1.81524E-6	-2.24390E-8	3.92925E-7	3.24489E-5
i	-5.96699E-7	1.81524E-6	1.09849E-4	-1.34943E-6	2.56318E-5	1.96766E-3
Ω	7.29239E-9	-2.24390E-8	-1.34943E-6	1.68265E-8	-2.82399E-7	-2.41207E-5
ω	-1.51425E-7	3.92925E-7	2.56318E-5	-2.82399E-7	1.46263E-5	4.79983E-4
M	-1.07204E-5	3.24489E-5	1.96766E-3	-2.41207E-5	4.79983E-4	3.53048E-2

Date of computation: 2026-07-30 14:25 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

26.017

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

17 - 40*

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

[-]

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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

1433

Unit

Source

[1]

Normalized RMS of residuals

Value

0.785793

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-09-01.424608

Unit

Source

[2]

Last Observation

Value

2022-09-02.931047

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2022RK from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1951-07-09 05:37	> 1 d	0.1740815	0.1638765	0.0077158
EARTH	1955-07-28 21:36	> 1 d	0.1504915	0.1288191	0.0101235
EARTH	1959-08-15 20:36	> 1 d	0.1135314	0.0783222	0.0137630
EARTH	1963-08-28 22:33	> 1 d	0.0657596	0.0312644	0.0146895
EARTH	1967-09-04 21:57	1337.4	0.0224947	0.0207260	0.0045887
EARTH	1971-09-07 05:38	1023.2	0.0387261	0.0217444	0.0175403
EARTH	1975-09-08 02:23	146.4	0.1099660	0.0479753	0.0215792
VENUS	1989-07-19 20:27	1232.3	0.0333761	0.0332618	0.0006000
EARTH	2002-06-26 17:02	586.2	0.1962534	0.1862140	0.0037788
EARTH	2006-07-10 22:20	> 1 d	0.1706037	0.1649203	0.0021872
EARTH	2010-07-30 07:17	> 1 d	0.1468441	0.1397670	0.0024848
EARTH	2014-08-16 00:27	1375.2	0.1113939	0.1036483	0.0026320
EARTH	2018-08-28 17:00	520.0	0.0650528	0.0597092	0.0018030
EARTH	2022-09-04 08:24	< 1 min	0.0240652	0.0240044	0.0000203
EARTH	2026-09-06 18:16	123.1	0.0354221	0.0303674	0.0017878
EARTH	2030-09-07 18:52	18.2	0.1017353	0.0904308	0.0037845
EARTH	2034-09-06 09:29	128.9	0.1888009	0.1747088	0.0047018
VENUS	2046-02-22 13:46	1050.4	0.0340954	0.0338610	0.0007473
EARTH	2061-07-07 03:28	> 1 d	0.1729817	0.1648086	0.0049903
EARTH	2065-07-26 15:16	> 1 d	0.1506863	0.1355658	0.0065091
EARTH	2069-08-12 10:05	> 1 d	0.1189955	0.0937396	0.0095364
EARTH	2073-08-26 05:35	> 1 d	0.0743145	0.0445797	0.0113180
EARTH	2077-09-03 01:25	> 1 d	0.0303624	0.0231155	0.0071535
EARTH	2081-09-06 00:13	649.2	0.0296954	0.0227393	0.0059337
EARTH	2085-09-07 11:11	37.1	0.0899893	0.0711036	0.0063710
EARTH	2089-09-06 10:28	45.4	0.1746124	0.1669899	0.0025420
VENUS	2102-09-27 14:17	> 1 d	0.0408784	0.0353990	0.0072997
EARTH	2112-06-26 16:57	> 1 d	0.1958318	0.1739036	0.0131769
VENUS	2116-04-13 12:54	> 1 d	0.0357064	0.0345949	0.0111240
EARTH	2116-07-14 07:03	> 1 w	0.1648603	0.1532068	0.0101443
EARTH	2120-08-04 00:43	> 1 w	0.1370445	0.1044900	0.0283027
EARTH	2124-08-21 01:15	> 1 w	0.0953028	0.0497332	0.0597074

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
226.26909760	238.69204402	0.02144597	MINIMUM
350.55739865	9.99227447	0.37013134	SADDLE
0.03917264	202.14016448	1.63881537	SADDLE
182.73284704	25.08615590	2.07908591	MAXIMUM

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MOID Plots

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