Asteroids

2025HP22 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.860

Aphelion (Q)

1.983

Eccentricity (e)

0.395

Inclination (i)

6.8

deg

Orbit period (P)

619.1

Earth MOID

0.00003

U parameter

7.3

Next Earth close approach

Date

2030-09-05

Nominal distance (from Earth center)

0.10972

16414407

Maximum Brightness

26.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-30

Observatory

MARGO, Nauchnyi

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

1.421655

1-sigma variation

0.000514

Unit

Eccentricity (e)

Value

0.394897

1-sigma variation

0.000277

Unit

Inclination (i)

Value

6.8370

1-sigma variation

0.0042

Unit

Long. of Ascending Node (Ω)

Value

40.9682

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

241.3980

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

90.86295

1-sigma variation

0.04544

Unit

Perihelion distance

Value

0.860248

1-sigma variation

Unit

Aphelion distance

Value

1.983061

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.487394

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000096

1-sigma variation

Unit

MOID

Value

0.000033

1-sigma variation

Unit

Orbit Period

Value

619.1411

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.64275E-7	1.42504E-7	2.14244E-6	-5.33840E-8	1.06179E-6	-2.33589E-5
e	1.42504E-7	7.68481E-8	1.15557E-6	-2.88000E-8	5.74157E-7	-1.25962E-5
i	2.14244E-6	1.15557E-6	1.73844E-5	-4.33518E-7	8.68902E-6	-1.89391E-4
Ω	-5.33840E-8	-2.88000E-8	-4.33518E-7	1.08204E-8	-2.18204E-7	4.71959E-6
ω	1.06179E-6	5.74157E-7	8.68902E-6	-2.18204E-7	4.69538E-6	-9.39700E-5
M	-2.33589E-5	-1.25962E-5	-1.89391E-4	4.71959E-6	-9.39700E-5	2.06470E-3

Date of computation: 2025-11-24 16:53 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

28.514

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

5 - 12*

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

220

Unit

Source

[1]

Normalized RMS of residuals

Value

0.799017

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-30.79055

Unit

Source

[2]

Last Observation

Value

2025-05-01.84433

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

58 (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

Close Approaches for 2025HP22 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	1990-09-20 02:41	> 1 d	0.1538128	0.0977880	0.0893778
EARTH	1995-09-13 01:41	> 1 d	0.0989430	0.0987467	0.0052934
EARTH	2000-08-30 01:09	> 1 w	0.1354321	0.0968792	0.0419650
EARTH	2005-07-28 17:36	> 1 w	0.1832713	0.1512459	0.0129464
EARTH	2010-07-01 20:27	> 1 w	0.1872034	0.1710691	0.0062972
EARTH	2015-06-06 02:29	> 1 w	0.1540450	0.1053022	0.0168006
EARTH	2020-05-12 06:54	> 1 d	0.0812054	0.0349571	0.0154583
EARTH	2025-05-02 00:56	< 1 s	0.0032964	0.0032901	0.0000021
EARTH	2030-09-05 00:34	> 1 d	0.1097235	0.0996728	0.0067036
EARTH	2047-06-19 10:35	> 1 w	0.1722872	0.1126032	0.0236991
EARTH	2064-04-25 23:27	> 1 d	0.0717017	0.0004102	0.0987506
EARTH	2069-08-06 10:50	> 1 w	0.1696463	0.1215984	0.0203166
EARTH	2086-04-29 14:16	> 1 d	0.0327087	0.0019520	0.0773873
EARTH	2091-07-26 07:36	> 1 w	0.1818062	0.1568043	0.0099348
EARTH	2113-05-12 06:40	> 1 mo	0.0702848	0.0009657	0.4720501
EARTH	2118-08-31 00:44	> 1 mo	0.1307672	0.0964331	0.2405954
MARS	2120-07-22 21:18	> 1 w	0.0447431	0.0038098	0.3084159

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
317.27939033	118.79226994	0.00003251	MINIMUM
45.01872734	246.50549361	0.09976742	MINIMUM
4.15122366	187.36626106	0.18738924	SADDLE
180.74579699	1.36991972	1.01020487	SADDLE
0.35458653	1.45806248	1.84126554	SADDLE
179.71312356	180.69284655	2.99754366	MAXIMUM

Download:

MOID Plots

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