Asteroids

2020OM help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.383

Aphelion (Q)

1.039

Eccentricity (e)

0.461

Inclination (i)

11.9

deg

Orbit period (P)

219.1

Earth MOID

0.01953

U parameter

7.6

Next Earth close approach

Date

2026-07-20

Nominal distance (from Earth center)

0.02244

3357625

Maximum Brightness

19.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2020-07-19

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.711298

1-sigma variation

0.000108

Unit

Eccentricity (e)

Value

0.461083

1-sigma variation

0.000247

Unit

Inclination (i)

Value

11.9008

1-sigma variation

0.0047

Unit

Long. of Ascending Node (Ω)

Value

117.1710

1-sigma variation

0.0011

Unit

Arg. of Perihelion (ω)

Value

3.8527

1-sigma variation

0.0044

Unit

Mean Anomaly (M)

Value

103.96817

1-sigma variation

0.70786

Unit

Perihelion distance

Value

0.383330

1-sigma variation

Unit

Aphelion distance

Value

1.039265

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.600295

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.020830

1-sigma variation

Unit

MOID

Value

0.019532

1-sigma variation

Unit

Orbit Period

Value

219.1167

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.17482E-8	-2.67990E-8	-5.12392E-7	1.17972E-7	-4.62936E-7	-7.67241E-5
e	-2.67990E-8	6.11370E-8	1.16930E-6	-2.69084E-7	1.05882E-6	1.75009E-4
i	-5.12392E-7	1.16930E-6	2.23977E-5	-5.14347E-6	2.04186E-5	3.34571E-3
Ω	1.17972E-7	-2.69084E-7	-5.14347E-6	1.18474E-6	-4.63770E-6	-7.70467E-4
ω	-4.62936E-7	1.05882E-6	2.04186E-5	-4.63770E-6	1.95986E-5	3.01997E-3
M	-7.67241E-5	1.75009E-4	3.34571E-3	-7.70467E-4	3.01997E-3	5.01069E-1

Date of computation: 2026-03-17 23:26 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

26.806

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

12 - 26*

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

2120

Unit

Source

[1]

Normalized RMS of residuals

Value

0.705807

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2020-07-18.475094

Unit

Source

[2]

Last Observation

Value

2020-07-19.99121

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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

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 2020OM 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	1952-07-07 21:33	> 1 d	0.0777346	0.0340373	0.0202647
EARTH	1955-07-07 05:59	635.4	0.1155624	0.0482426	0.0256862
EARTH	1958-07-06 16:27	200.0	0.1605847	0.0759750	0.0298993
EARTH	1990-08-10 23:30	118.3	0.1675525	0.0895169	0.0297253
EARTH	1993-08-10 00:55	1115.1	0.1281221	0.0698023	0.0250181
EARTH	1996-08-07 20:18	> 1 d	0.0957096	0.0579312	0.0196902
EARTH	1999-08-05 17:21	> 1 d	0.0720647	0.0491079	0.0142474
EARTH	2002-08-01 19:45	> 1 d	0.0545186	0.0403669	0.0098007
EARTH	2005-07-29 02:12	> 1 d	0.0427797	0.0328874	0.0069299
EARTH	2008-07-25 13:36	> 1 d	0.0338859	0.0269867	0.0048187
EARTH	2011-07-23 14:09	> 1 d	0.0273190	0.0229860	0.0030434
EARTH	2014-07-21 12:00	1223.2	0.0235326	0.0211449	0.0015486
EARTH	2017-07-20 08:11	564.3	0.0218504	0.0205950	0.0005974
EARTH	2020-07-19 14:39	< 1 min	0.0212203	0.0211841	0.0000121
EARTH	2023-07-20 11:47	557.7	0.0213432	0.0201997	0.0005682
EARTH	2026-07-20 18:11	1235.1	0.0224443	0.0206707	0.0014162
EARTH	2029-07-21 19:47	> 1 d	0.0246996	0.0215237	0.0029160
EARTH	2032-07-23 12:25	> 1 d	0.0289495	0.0238361	0.0048139
EARTH	2035-07-26 19:34	> 1 d	0.0350408	0.0275645	0.0069930
EARTH	2038-07-29 20:28	> 1 d	0.0441855	0.0334852	0.0097472
EARTH	2041-08-02 09:35	> 1 d	0.0580134	0.0413356	0.0140121
EARTH	2044-08-05 14:14	> 1 d	0.0777280	0.0501039	0.0200083
EARTH	2047-08-08 23:31	> 1 d	0.1060308	0.0586807	0.0269793
EARTH	2050-08-10 03:19	1012.5	0.1415151	0.0674642	0.0329761
EARTH	2053-08-10 05:04	80.3	0.1846262	0.0871079	0.0371951
MERCURY	2065-03-10 07:17	402.1	0.0480175	0.0476183	0.0106420
MERCURY	2082-07-13 02:07	471.2	0.0479380	0.0478371	0.0049192
EARTH	2084-07-06 01:54	22.5	0.1535445	0.0528290	0.0372758
EARTH	2087-07-07 05:17	1075.7	0.1107145	0.0369399	0.0335198
EARTH	2090-07-08 08:23	> 1 d	0.0737608	0.0306924	0.0276610
EARTH	2093-07-10 07:10	> 1 d	0.0468892	0.0249498	0.0202098
EARTH	2096-07-12 12:04	> 1 d	0.0299947	0.0212131	0.0117342
EARTH	2099-07-14 23:34	> 1 d	0.0228716	0.0195940	0.0054062
EARTH	2102-07-16 10:54	> 1 d	0.0209191	0.0191531	0.0027518
EARTH	2105-07-16 04:16	1361.8	0.0209295	0.0190630	0.0021992
EARTH	2108-07-15 03:34	1288.4	0.0230428	0.0195438	0.0028672
EARTH	2111-07-14 04:27	1283.8	0.0303487	0.0212732	0.0046630
EARTH	2114-07-11 17:05	1075.5	0.0456694	0.0295076	0.0063187
EARTH	2117-07-09 05:53	672.1	0.0718986	0.0508323	0.0074190
EARTH	2120-07-07 14:47	284.2	0.1059768	0.0835283	0.0076565
EARTH	2123-07-07 21:38	11.7	0.1484020	0.1269964	0.0072107
EARTH	2126-07-08 00:50	127.8	0.1972425	0.1783998	0.0063147

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
170.29960138	194.10087990	0.01850890	MINIMUM
3.11060189	23.62829886	0.60152530	SADDLE
2.34122496	202.40711173	1.40029665	SADDLE
180.44815666	20.22766019	2.02373310	MAXIMUM

Download:

MOID Plots

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