Asteroids

2022HT2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.781

Aphelion (Q)

2.916

Eccentricity (e)

0.577

Inclination (i)

1.6

deg

Orbit period (P)

918.1

Earth MOID

0.02110

U parameter

3.6

Next Earth close approach

Date

2027-06-18

Nominal distance (from Earth center)

0.12917

19323341

Maximum Brightness

21.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

170 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2022-04-26

Observatory

Pan-STARRS 2, Haleakala

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

1.848718

1-sigma variation

0.000003

Unit

Eccentricity (e)

Value

0.577364

1-sigma variation

0.000001

Unit

Inclination (i)

Value

1.6079

1-sigma variation

6.459E-6

Unit

Long. of Ascending Node (Ω)

Value

298.2816

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

20.6277

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

120.13015

1-sigma variation

0.00122

Unit

Perihelion distance

Value

0.781335

1-sigma variation

Unit

Aphelion distance

Value

2.916100

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.217430

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.698862

1-sigma variation

Unit

MOID

Value

0.021098

1-sigma variation

Unit

Orbit Period

Value

918.1302

1-sigma variation

Unit

U parameter

Value

3.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.00722E-11	2.26141E-12	7.19710E-12	-3.94663E-12	-5.76750E-11	-3.87485E-9
e	2.26141E-12	5.36760E-13	1.90166E-12	-2.10286E-11	1.37604E-11	-8.70719E-10
i	7.19710E-12	1.90166E-12	4.17165E-11	-1.93869E-9	1.94725E-9	-2.77099E-9
Ω	-3.94663E-12	-2.10286E-11	-1.93869E-9	1.30323E-7	-1.33351E-7	1.44615E-9
ω	-5.76750E-11	1.37604E-11	1.94725E-9	-1.33351E-7	1.38303E-7	2.20751E-8
M	-3.87485E-9	-8.70719E-10	-2.77099E-9	1.44615E-9	2.20751E-8	1.49072E-6

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

21.017

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

170 - 400*

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

1240

Unit

Source

[1]

Normalized RMS of residuals

Value

0.39481

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2022-03-28.555469

Unit

Source

[2]

Last Observation

Value

2022-05-31.208154

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

85 (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

2022-06-03

Unit

Source

[3]

Last Observation

Value

2022-06-03

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2022HT2 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	1954-06-17 06:27	66.8	0.1282952	0.1276400	0.0002184
EARTH	1969-10-03 09:17	39.7	0.1170770	0.1166451	0.0001440
EARTH	1974-10-22 18:52	29.7	0.0737875	0.0729200	0.0002895
EARTH	2022-05-30 21:28	< 1 s	0.0305517	0.0305514	0.0000001
EARTH	2027-06-18 08:03	19.7	0.1291686	0.1289767	0.0000639
EARTH	2042-09-14 02:54	110.3	0.1895032	0.1890761	0.0001424
EARTH	2047-10-12 19:32	53.1	0.0683978	0.0675339	0.0002883
EARTH	2052-10-25 01:44	26.0	0.1005316	0.0996791	0.0002843
MARS	2060-07-07 22:55	8.1	0.0413110	0.0410376	0.0000912
52 Europa	2081-04-18 00:22	25.2	0.0196695	0.0195668	0.0000350
EARTH	2110-05-29 04:45	55.4	0.0720367	0.0704077	0.0005435
EARTH	2115-06-10 12:15	47.4	0.0697041	0.0689296	0.0002583
EARTH	2120-07-07 22:14	26.7	0.1895771	0.1894707	0.0000355

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
321.55927365	148.27400509	0.02098873	MINIMUM
36.94592884	283.22631923	0.02790320	MINIMUM
359.08578952	215.58672208	0.23170971	SADDLE
359.04077489	35.47950134	1.76827122	SADDLE
179.74517061	36.32596998	1.92824595	SADDLE
179.72216799	216.30913390	3.92799681	MAXIMUM

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MOID Plots

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