Asteroids

2022HD1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.005

Aphelion (Q)

2.201

Eccentricity (e)

0.373

Inclination (i)

5.7

deg

Orbit period (P)

741.2

Earth MOID

0.01071

U parameter

0.4

Next Earth close approach

Date

2089-05-15

Nominal distance (from Earth center)

0.05123

7663971

Maximum Brightness

20.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.7

mag

Diameter

50 - 110*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-04-23

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

1.602870

1-sigma variation

1.796E-8

Unit

Eccentricity (e)

Value

0.373083

1-sigma variation

2.801E-8

Unit

Inclination (i)

Value

5.7263

1-sigma variation

6.232E-6

Unit

Long. of Ascending Node (Ω)

Value

78.9831

1-sigma variation

4.133E-5

Unit

Arg. of Perihelion (ω)

Value

174.9918

1-sigma variation

4.984E-5

Unit

Mean Anomaly (M)

Value

257.06496

1-sigma variation

0.00002

Unit

Perihelion distance

Value

1.004867

1-sigma variation

Unit

Aphelion distance

Value

2.200874

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.211145

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.010919

1-sigma variation

Unit

MOID

Value

0.010712

1-sigma variation

Unit

Orbit Period

Value

741.2181

1-sigma variation

Unit

U parameter

Value

0.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.22572E-16	2.53319E-16	4.07605E-14	-2.72431E-13	3.48135E-13	-2.97855E-13
e	2.53319E-16	7.84342E-16	7.23188E-14	-3.99477E-13	8.21750E-13	-3.98248E-13
i	4.07605E-14	7.23188E-14	3.88437E-11	-2.21525E-10	2.77537E-10	-7.56223E-11
Ω	-2.72431E-13	-3.99477E-13	-2.21525E-10	1.70787E-9	-1.93345E-9	4.41178E-10
ω	3.48135E-13	8.21750E-13	2.77537E-10	-1.93345E-9	2.48431E-9	-6.60337E-10
M	-2.97855E-13	-3.98248E-13	-7.56223E-11	4.41178E-10	-6.60337E-10	3.58056E-10

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

23.669

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

50 - 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]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

803

Unit

Source

[1]

Unobserved

Value

455

Unit

Source

[1]

Normalized RMS of residuals

Value

0.626903

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-04-08.364157

Unit

Source

[2]

Last Observation

Value

2024-06-19.188963

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

130 (3)

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 2022HD1 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	1953-04-23 21:04	< 1 min	0.1733708	0.1733604	0.0000034
EARTH	1955-05-27 23:21	3.4	0.0258977	0.0258862	0.0000038
EARTH	1957-07-06 04:04	2.3	0.0726878	0.0726617	0.0000087
EARTH	2020-04-23 20:04	< 1 min	0.1805467	0.1805455	0.0000004
EARTH	2022-05-20 13:51	< 1 s	0.0391781	0.0391780	0.0000000
EARTH	2024-06-29 04:09	< 1 min	0.0421539	0.0421530	0.0000003
EARTH	2089-05-15 16:07	1.6	0.0512305	0.0512198	0.0000036
EARTH	2091-06-27 10:19	1.4	0.0342763	0.0342683	0.0000026
EARTH	2093-07-22 12:01	< 1 min	0.1945380	0.1945344	0.0000012

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
4.17727898	157.52530530	0.00928386	MINIMUM
180.38867966	332.19380708	1.21560539	SADDLE
0.99533194	332.78314697	1.98990780	SADDLE
180.53202236	152.29521430	3.21541596	MAXIMUM

Download:

MOID Plots

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