Asteroids

2025HF help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Aten

Perihelion (q)

0.770

Aphelion (Q)

1.175

Eccentricity (e)

0.209

Inclination (i)

12.7

deg

Orbit period (P)

350.2

Earth MOID

0.00013

U parameter

2.7

Next Earth close approach

Date

2044-11-25

Nominal distance (from Earth center)

0.1791

26793157

Maximum Brightness

25.5

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

2025-04-18

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.972394

1-sigma variation

2.099E-7

Unit

Eccentricity (e)

Value

0.208567

1-sigma variation

2.373E-7

Unit

Inclination (i)

Value

12.6939

1-sigma variation

1.605E-5

Unit

Long. of Ascending Node (Ω)

Value

32.7606

1-sigma variation

1.667E-6

Unit

Arg. of Perihelion (ω)

Value

290.9168

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

335.60148

1-sigma variation

0.00007

Unit

Perihelion distance

Value

0.769585

1-sigma variation

Unit

Aphelion distance

Value

1.175203

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.129082

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000190

1-sigma variation

Unit

MOID

Value

0.000133

1-sigma variation

Unit

Orbit Period

Value

350.2367

1-sigma variation

Unit

U parameter

Value

2.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.40517E-14	2.00864E-14	1.71571E-12	-2.19086E-13	-1.20721E-11	-1.31014E-11
e	2.00864E-14	5.63275E-14	2.46817E-12	-1.90192E-13	-5.00204E-12	-8.70204E-13
i	1.71571E-12	2.46817E-12	2.57746E-10	-2.39540E-11	-4.37542E-10	-3.30507E-10
Ω	-2.19086E-13	-1.90192E-13	-2.39540E-11	2.77989E-12	5.69132E-11	5.60869E-11
ω	-1.20721E-11	-5.00204E-12	-4.37542E-10	5.69132E-11	3.31695E-9	3.64347E-9
M	-1.31014E-11	-8.70204E-13	-3.30507E-10	5.60869E-11	3.64347E-9	4.44931E-9

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

25.622

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

351

Unit

Source

[1]

Normalized RMS of residuals

Value

0.537434

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-18.332633

Unit

Source

[2]

Last Observation

Value

2025-04-22.892394

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

84 (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

2025-04-22

Unit

Source

[3]

Last Observation

Value

2025-04-23

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

5 (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

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 2025HF 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	1964-11-19 21:41	293.5	0.1132731	0.1106995	0.0009194
EARTH	1967-04-23 16:48	71.7	0.0954856	0.0888224	0.0022214
EARTH	1983-11-11 12:12	22.3	0.1080587	0.1080459	0.0000044
EARTH	1986-04-23 13:59	5.2	0.0231669	0.0224284	0.0002462
EARTH	2002-11-28 18:43	1.8	0.1916832	0.1916432	0.0000133
EARTH	2003-10-28 03:01	< 1 min	0.1526853	0.1526833	0.0000007
EARTH	2006-04-22 14:32	1.2	0.0280240	0.0279237	0.0000334
EARTH	2022-11-07 13:07	1.4	0.1183462	0.1183395	0.0000022
EARTH	2025-04-23 02:16	< 1 s	0.0059371	0.0059371	0.0000000
EARTH	2044-11-25 19:19	2.7	0.1791012	0.1790143	0.0000290
EARTH	2045-10-31 19:16	9.6	0.1304574	0.1303928	0.0000215
EARTH	2048-04-22 20:44	1.6	0.1062727	0.1061607	0.0000373
EARTH	2049-04-18 16:29	1.7	0.1430897	0.1429769	0.0000376
EARTH	2068-11-14 14:07	3.9	0.0962280	0.0962177	0.0000035
EARTH	2072-04-22 05:22	< 1 min	0.0244335	0.0243553	0.0000261
EARTH	2090-11-25 12:36	22.1	0.1632821	0.1626700	0.0002043
EARTH	2091-10-26 16:14	87.0	0.1532699	0.1527579	0.0001710
EARTH	2094-04-23 21:42	3.2	0.0410164	0.0401769	0.0002798
EARTH	2113-11-17 10:02	94.7	0.1002213	0.0997540	0.0001629
EARTH	2116-04-10 18:37	200.0	0.1957223	0.1936421	0.0006937
EARTH	2117-04-22 14:31	35.8	0.0567827	0.0541564	0.0008754

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
260.51737903	110.27865787	0.00135024	MINIMUM
75.61649651	310.33414443	0.09484874	MINIMUM
167.05950247	31.66641466	0.29734433	SADDLE
348.74278818	209.28868877	0.31075749	SADDLE
354.54820348	36.73169326	1.74756128	SADDLE
179.30987978	221.67525990	2.17720354	MAXIMUM

Download:

MOID Plots

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