Asteroids

2025HN5 help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.618

Aphelion (Q)

4.083

Eccentricity (e)

0.737

Inclination (i)

14.2

deg

Orbit period (P)

1316.6

Earth MOID

0.06232

U parameter

8.5

Next Earth close approach

Date

2090-04-26

Nominal distance (from Earth center)

0.19856

29704414

Maximum Brightness

21.4

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

22.3

mag

Diameter

90 - 210*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-26

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.350867

1-sigma variation

0.007452

Unit

Eccentricity (e)

Value

0.737014

1-sigma variation

0.001000

Unit

Inclination (i)

Value

14.2032

1-sigma variation

0.0279

Unit

Long. of Ascending Node (Ω)

Value

18.1742

1-sigma variation

0.0033

Unit

Arg. of Perihelion (ω)

Value

292.1265

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

344.81904

1-sigma variation

0.07915

Unit

Perihelion distance

Value

0.618246

1-sigma variation

Unit

Aphelion distance

Value

4.083488

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.157472

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.485227

1-sigma variation

Unit

MOID

Value

0.062321

1-sigma variation

Unit

Orbit Period

Value

1316.5595

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.55392E-5	7.45586E-6	2.07914E-4	2.41581E-5	-2.63146E-6	5.89883E-4
e	7.45586E-6	1.00092E-6	2.79128E-5	3.24378E-6	-3.51790E-7	7.91887E-5
i	2.07914E-4	2.79128E-5	7.78582E-4	9.05621E-5	-9.63185E-6	2.20824E-3
Ω	2.41581E-5	3.24378E-6	9.05621E-5	1.05745E-5	-1.04262E-6	2.56574E-4
ω	-2.63146E-6	-3.51790E-7	-9.63185E-6	-1.04262E-6	3.84974E-7	-2.79670E-5
M	5.89883E-4	7.91887E-5	2.20824E-3	2.56574E-4	-2.79670E-5	6.26515E-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

22.273

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

90 - 210*

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

0.674623

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-22.174258

Unit

Source

[2]

Last Observation

Value

2025-05-09.202414

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (1)

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 2025HN5 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
MARS	1974-09-27 14:18	> 1 mo	0.0381470	0.0301863	0.5706852
EARTH	2007-05-10 06:22	> 1 mo	0.1627087	0.1057400	0.3919823
EARTH	2014-10-21 04:40	> 1 w	0.0944316	0.0648468	0.2331980
EARTH	2025-05-12 23:26	1.1	0.1963702	0.1955065	0.0002879
VENUS	2054-06-09 12:02	> 1 mo	0.0338827	0.0041479	0.8978889
VENUS	2079-09-02 19:43	> 1 mo	0.0223478	0.0031510	5.8084888
EARTH	2090-04-26 06:45	> 1 mo	0.1985617	0.1349528	27.2296541
EARTH	2108-05-05 16:49	> 1 mo	0.1401904	0.1382678	16.0446296
EARTH	2115-11-02 01:18	> 1 mo	0.1575733	0.0891744	107.8547727

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
37.25895231	290.36694577	0.06232054	MINIMUM
319.40938134	119.50727265	0.10966924	MINIMUM
357.15713724	201.79728440	0.43796530	SADDLE
358.75596899	26.09346250	1.59347693	SADDLE
179.54792989	28.40054274	3.13177214	SADDLE
180.12447547	208.62583969	5.07644957	MAXIMUM

Download:

MOID Plots

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