Asteroids

2025HA1 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.534

Aphelion (Q)

1.981

Eccentricity (e)

0.576

Inclination (i)

0.5

deg

Orbit period (P)

515.1

Earth MOID

0.00069

U parameter

7.3

Next Earth close approach

Date

2037-09-12

Nominal distance (from Earth center)

0.17701

26479683

Maximum Brightness

25.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-21

Observatory

ATLAS Chile, Rio Hurtado

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.257481

1-sigma variation

0.000362

Unit

Eccentricity (e)

Value

0.575548

1-sigma variation

0.000211

Unit

Inclination (i)

Value

0.4918

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

26.1750

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

77.7444

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

328.31433

1-sigma variation

0.14962

Unit

Perihelion distance

Value

0.533740

1-sigma variation

Unit

Aphelion distance

Value

1.981221

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.244729

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.049294

1-sigma variation

Unit

MOID

Value

0.000688

1-sigma variation

Unit

Orbit Period

Value

515.0511

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.30960E-7	7.61825E-8	6.68584E-8	-2.17888E-7	1.03382E-7	-5.41465E-5
e	7.61825E-8	4.43172E-8	3.88964E-8	-1.26693E-7	6.00653E-8	-3.14982E-5
i	6.68584E-8	3.88964E-8	3.48270E-8	-1.00273E-7	4.20184E-8	-2.76436E-5
Ω	-2.17888E-7	-1.26693E-7	-1.00273E-7	5.41456E-7	-3.46991E-7	9.00781E-5
ω	1.03382E-7	6.00653E-8	4.20184E-8	-3.46991E-7	2.54935E-7	-4.27344E-5
M	-5.41465E-5	-3.14982E-5	-2.76436E-5	9.00781E-5	-4.27344E-5	2.23872E-2

Date of computation: 2026-03-17 23:26 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

25.642

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

20 - 40*

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

355

Unit

Source

[1]

Normalized RMS of residuals

Value

0.513971

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-21.185619

Unit

Source

[2]

Last Observation

Value

2025-04-29.13002

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

93 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025HA1 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-09-29 02:09	> 1 d	0.1290754	0.0102541	0.1032561
MARS	1961-11-11 16:14	1283.9	0.0383345	0.0058159	0.0339965
VENUS	1963-01-29 12:23	> 1 d	0.0340121	0.0339879	0.0015275
EARTH	1965-09-26 09:21	> 1 d	0.0705511	0.0099843	0.0367658
EARTH	1978-09-26 14:07	884.3	0.0671722	0.0272702	0.0135206
MARS	1982-12-17 19:36	44.1	0.0219624	0.0202060	0.0006947
EARTH	1991-09-28 10:56	> 1 d	0.0972786	0.0307383	0.0224612
EARTH	1999-04-11 19:56	> 1 d	0.1761621	0.0734630	0.0342340
EARTH	2004-10-02 03:29	> 1 d	0.1752679	0.0729381	0.0342006
EARTH	2012-04-15 23:47	> 1 d	0.0867217	0.0007102	0.0316086
EARTH	2025-04-20 12:59	< 1 min	0.0007774	0.0007763	0.0000004
EARTH	2037-09-12 11:20	> 1 d	0.1770057	0.0799994	0.0323467
EARTH	2044-09-26 22:23	> 1 d	0.1350983	0.0042178	0.0461027
EARTH	2049-04-12 16:19	> 1 d	0.1655869	0.0221733	0.0478066
EARTH	2056-04-26 18:25	> 1 d	0.1346635	0.0009088	0.0491191
EARTH	2068-09-19 05:03	> 1 d	0.0314910	0.0040824	0.0274593
EARTH	2080-04-16 13:50	> 1 d	0.0904691	0.0008027	0.0744369
VENUS	2087-02-05 02:41	> 1 w	0.0441165	0.0313711	0.0894358
EARTH	2087-04-28 14:42	> 1 d	0.1507446	0.0008412	0.1080379
VENUS	2092-11-18 01:35	> 1 w	0.0465039	0.0390936	0.0710510
VENUS	2096-12-12 02:52	> 1 w	0.0334501	0.0312482	0.0579145
VENUS	2102-09-25 23:22	> 1 w	0.0414275	0.0390861	0.1218340
MARS	2105-03-17 15:43	> 1 w	0.0355105	0.0344863	0.0902398
EARTH	2106-09-23 04:30	> 1 w	0.0175896	0.0038605	0.5478971
MARS	2110-11-07 08:56	> 1 w	0.0404038	0.0343180	0.3597232
MARS	2116-06-29 09:33	> 1 mo	0.0390605	0.0344156	1.0098826
EARTH	2118-04-25 11:22	> 1 mo	0.0679800	0.0005723	3.1222986
MARS	2122-02-19 16:38	> 1 mo	0.0346218	0.0344407	0.3043292

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
69.68518733	108.25228563	0.00068568	MINIMUM
290.45116920	257.13079850	0.00413644	MINIMUM
0.12790733	2.76604056	0.44983483	SADDLE
180.03475587	182.64934504	0.96325343	SADDLE
0.13052672	182.76792576	1.55190589	SADDLE
180.03187789	2.64703191	2.96486709	MAXIMUM

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MOID Plots

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