Asteroids

2025HN help

Last update: 2025-05-09 12:45 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.893

Aphelion (Q)

1.682

Eccentricity (e)

0.306

Inclination (i)

15.6

deg

Orbit period (P)

533.4

Earth MOID

0.01188

U parameter

7.9

Next Earth close approach

Date

2044-04-14

Nominal distance (from Earth center)

0.13798

20641432

Maximum Brightness

25.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-19

Observatory

GINOP-KHK, Piszkesteto

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.287148

1-sigma variation

0.000824

Unit

Eccentricity (e)

Value

0.306468

1-sigma variation

0.000519

Unit

Inclination (i)

Value

15.5594

1-sigma variation

0.0196

Unit

Long. of Ascending Node (Ω)

Value

31.1318

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

242.4108

1-sigma variation

0.0137

Unit

Mean Anomaly (M)

Value

334.29740

1-sigma variation

0.04169

Unit

Perihelion distance

Value

0.892679

1-sigma variation

Unit

Aphelion distance

Value

1.681618

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.364681

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.016301

1-sigma variation

Unit

MOID

Value

0.011884

1-sigma variation

Unit

Orbit Period

Value

533.3857

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.78301E-7	4.27470E-7	1.61320E-5	-3.83280E-7	-1.13220E-5	3.43352E-5
e	4.27470E-7	2.69396E-7	1.01665E-5	-2.41544E-7	-7.13503E-6	2.16382E-5
i	1.61320E-5	1.01665E-5	3.83743E-4	-9.11841E-6	-2.69257E-4	8.16580E-4
Ω	-3.83280E-7	-2.41544E-7	-9.11841E-6	2.16690E-7	6.39725E-6	-1.94011E-5
ω	-1.13220E-5	-7.13503E-6	-2.69257E-4	6.39725E-6	1.89037E-4	-5.73135E-4
M	3.43352E-5	2.16382E-5	8.16580E-4	-1.94011E-5	-5.73135E-4	1.73804E-3

Date of computation: 2025-05-09 12:45 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

26.812

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

12 - 26*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.582126

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-19.909947

Unit

Source

[2]

Last Observation

Value

2025-04-22.296393

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

34 (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

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 2025HN 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	1955-04-26 04:57	> 1 mo	0.0423105	0.0094997	2.8691285
EARTH	1974-04-22 16:11	> 1 w	0.0130932	0.0109115	0.1027156
EARTH	1990-05-08 10:37	> 1 w	0.1598474	0.0175324	0.1663273
EARTH	2009-04-13 03:25	> 1 d	0.1750113	0.0035537	0.0966228
EARTH	2025-04-23 10:44	< 1 min	0.0133839	0.0133302	0.0000179
EARTH	2044-04-14 22:32	> 1 d	0.1379794	0.0068990	0.1119676
EARTH	2060-05-12 05:04	> 1 w	0.1830348	0.0317217	0.1460241
EARTH	2079-04-25 23:36	> 1 w	0.0358227	0.0126837	0.1443310
EARTH	2098-04-28 01:00	> 1 mo	0.0647163	0.0115290	0.4191013

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
313.78752289	109.66723552	0.01188393	MINIMUM
63.25384690	253.56774515	0.20129898	MINIMUM
16.32472538	193.63514191	0.28036130	SADDLE
186.54347812	355.34940965	0.76559615	SADDLE
2.90498236	354.39606933	1.86247738	SADDLE
178.21076477	169.20041783	2.67965368	MAXIMUM

Download:

MOID Plots

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