Asteroids

2022HH1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.560

Aphelion (Q)

1.027

Eccentricity (e)

0.294

Inclination (i)

1.1

deg

Orbit period (P)

258.1

Earth MOID

0.00354

U parameter

7.1

Next Earth close approach

Date

2034-03-29

Nominal distance (from Earth center)

0.01331

1990946

Maximum Brightness

19.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.5

mag

Diameter

8 - 18*

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

0.793371

1-sigma variation

0.000073

Unit

Eccentricity (e)

Value

0.294306

1-sigma variation

0.000134

Unit

Inclination (i)

Value

1.0533

1-sigma variation

0.0006

Unit

Long. of Ascending Node (Ω)

Value

211.1928

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

174.7627

1-sigma variation

0.0012

Unit

Mean Anomaly (M)

Value

215.69850

1-sigma variation

0.25662

Unit

Perihelion distance

Value

0.559877

1-sigma variation

Unit

Aphelion distance

Value

1.026866

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018501

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.434241

1-sigma variation

Unit

MOID

Value

0.003540

1-sigma variation

Unit

Orbit Period

Value

258.1150

1-sigma variation

Unit

U parameter

Value

7.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.30100E-9	-9.76779E-9	-4.63000E-8	-2.39728E-8	8.71170E-8	-1.86843E-5
e	-9.76779E-9	1.79985E-8	8.53142E-8	4.41691E-8	-1.60559E-7	3.44284E-5
i	-4.63000E-8	8.53142E-8	4.04500E-7	2.09837E-7	-7.61490E-7	1.63193E-4
Ω	-2.39728E-8	4.41691E-8	2.09837E-7	1.10996E-7	-3.94803E-7	8.44934E-5
ω	8.71170E-8	-1.60559E-7	-7.61490E-7	-3.94803E-7	1.44798E-6	-3.07087E-4
M	-1.86843E-5	3.44284E-5	1.63193E-4	8.44934E-5	-3.07087E-4	6.58564E-2

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

27.545

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

8 - 18*

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

1242

Unit

Source

[1]

Normalized RMS of residuals

Value

0.674591

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-04-24.231086

Unit

Source

[2]

Last Observation

Value

2022-04-30.275908

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

53 (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 2022HH1 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
VENUS	1950-01-22 23:50	> 1 d	0.0452931	0.0393540	0.0267403
EARTH	1950-03-29 18:59	> 1 w	0.0092716	0.0084683	0.0115702
EARTH	1962-04-24 15:39	> 1 w	0.0197300	0.0050821	0.0150701
EARTH	1974-04-28 17:58	> 1 d	0.0142453	0.0025218	0.0055536
EARTH	1986-04-01 21:35	> 1 d	0.0155560	0.0097268	0.0024793
EARTH	1998-04-10 14:20	1421.9	0.0225990	0.0212080	0.0004719
EARTH	2010-04-18 08:56	> 1 d	0.0226702	0.0193698	0.0011426
EARTH	2022-04-24 10:00	< 1 min	0.0184489	0.0184216	0.0000091
EARTH	2034-03-29 20:57	> 1 d	0.0133087	0.0084685	0.0035181
VENUS	2040-03-05 16:55	226.8	0.0406883	0.0385573	0.0009121
VENUS	2041-02-07 01:16	388.4	0.0438836	0.0416510	0.0015143
EARTH	2046-04-17 23:08	> 1 d	0.0225177	0.0166372	0.0022895
EARTH	2058-04-18 18:43	> 1 d	0.0220745	0.0189697	0.0011153
VENUS	2064-03-03 06:27	337.3	0.0407325	0.0394309	0.0015396
EARTH	2070-04-11 20:00	> 1 w	0.0238926	0.0226193	0.0006801
EARTH	2082-03-31 04:55	> 1 d	0.0163524	0.0089493	0.0029469
VENUS	2084-02-28 19:15	201.4	0.0396756	0.0371556	0.0008769
EARTH	2094-04-24 09:43	> 1 w	0.0165465	0.0079332	0.0118851
EARTH	2106-04-12 04:05	> 1 w	0.0237996	0.0232972	0.0011946
VENUS	2107-03-26 10:51	> 1 d	0.0430410	0.0396671	0.0274839
VENUS	2108-02-27 22:46	> 1 d	0.0433139	0.0385974	0.0336373
EARTH	2118-04-01 20:29	> 1 mo	0.0184890	0.0081064	0.0321958

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
202.81397967	119.85841180	0.00375164	MINIMUM
151.49181842	81.54999179	0.00823197	MINIMUM
176.72432721	100.40514265	0.02369581	SADDLE
354.60831629	278.07494409	0.43687609	SADDLE
354.60571238	98.07899038	1.56282073	SADDLE
177.10273358	280.69090561	2.02325968	MAXIMUM

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MOID Plots

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