Asteroids

2022HM1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.722

Aphelion (Q)

1.639

Eccentricity (e)

0.388

Inclination (i)

15.5

deg

Orbit period (P)

468.5

Earth MOID

0.03374

U parameter

8.5

Next Earth close approach

Date

2025-10-23

Nominal distance (from Earth center)

0.03832

5733201

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-04-24

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

1.180549

1-sigma variation

0.001664

Unit

Eccentricity (e)

Value

0.388458

1-sigma variation

0.001068

Unit

Inclination (i)

Value

15.5007

1-sigma variation

0.0230

Unit

Long. of Ascending Node (Ω)

Value

34.0995

1-sigma variation

0.0048

Unit

Arg. of Perihelion (ω)

Value

79.9977

1-sigma variation

0.0124

Unit

Mean Anomaly (M)

Value

338.76098

1-sigma variation

1.53282

Unit

Perihelion distance

Value

0.721956

1-sigma variation

Unit

Aphelion distance

Value

1.639143

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.054804

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.067571

1-sigma variation

Unit

MOID

Value

0.033742

1-sigma variation

Unit

Orbit Period

Value

468.5162

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.76934E-6	1.77758E-6	3.82062E-5	8.06036E-6	-2.04600E-5	-2.55082E-3
e	1.77758E-6	1.14136E-6	2.45101E-5	5.17448E-6	-1.31626E-5	-1.63732E-3
i	3.82062E-5	2.45101E-5	5.27776E-4	1.11170E-4	-2.81232E-4	-3.51915E-2
Ω	8.06036E-6	5.17448E-6	1.11170E-4	2.34618E-5	-5.96047E-5	-7.42435E-3
ω	-2.04600E-5	-1.31626E-5	-2.81232E-4	-5.96047E-5	1.53644E-4	1.88455E-2
M	-2.55082E-3	-1.63732E-3	-3.51915E-2	-7.42435E-3	1.88455E-2	2.34955E0

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

25.597

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

20 - 50*

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

1237

Unit

Source

[1]

Normalized RMS of residuals

Value

0.662878

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-04-24.274266

Unit

Source

[2]

Last Observation

Value

2022-04-26.91833

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (0)

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 2022HM1 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	1963-04-26 06:42	> 1 w	0.1993121	0.0344534	0.1974246
EARTH	1972-04-17 19:27	> 1 d	0.0402831	0.0389191	0.0300025
EARTH	1975-10-24 08:56	> 1 w	0.0471944	0.0352390	0.0904295
EARTH	1981-04-13 05:53	> 1 d	0.1341637	0.0381600	0.1707184
EARTH	1984-10-15 21:30	> 1 w	0.1036908	0.0370720	0.1847383
EARTH	2013-04-24 05:17	> 1 d	0.1590799	0.0356376	0.0751512
EARTH	2016-11-06 00:49	> 1 d	0.1773882	0.0669522	0.0419226
EARTH	2022-04-17 22:12	< 1 min	0.0380002	0.0377384	0.0000873
EARTH	2025-10-23 03:28	> 1 d	0.0383241	0.0337797	0.0169101
EARTH	2031-04-13 09:05	> 1 d	0.1528365	0.0366611	0.0994129
EARTH	2034-10-15 08:51	> 1 w	0.1258496	0.0366321	0.1435045
EARTH	2063-04-23 05:25	> 1 w	0.1213111	0.0354574	0.3756956
EARTH	2066-11-01 11:28	> 1 mo	0.1367901	0.0423678	0.3839365
EARTH	2072-04-16 02:28	> 1 w	0.0560620	0.0365166	0.2857138
EARTH	2075-10-20 18:11	> 1 w	0.0453522	0.0327367	0.2504707
EARTH	2104-04-19 20:30	741.1	0.0421820	0.0349877	0.0066830
EARTH	2107-10-25 17:35	> 1 d	0.0434160	0.0317154	0.0523869
EARTH	2113-04-14 02:39	> 1 d	0.1504015	0.0336307	0.1605437
EARTH	2116-10-16 00:05	> 1 w	0.1301925	0.0342632	0.2198086

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
296.60344088	287.16818489	0.03353332	MINIMUM
70.22802314	104.58928656	0.03773350	MINIMUM
4.09437115	17.54601683	0.34622449	SADDLE
182.49767365	193.41044929	0.71118143	SADDLE
1.55698493	193.66135698	1.72260709	SADDLE
179.60347237	11.39687529	2.60093301	MAXIMUM

Download:

MOID Plots

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