Asteroids

2025HU help

Last update: 2025-04-27 13:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.999

Aphelion (Q)

3.067

Eccentricity (e)

0.509

Inclination (i)

6.8

deg

Orbit period (P)

1058.7

Earth MOID

0.00328

U parameter

7.0

Next Earth close approach

Date

2051-06-14

Nominal distance (from Earth center)

0.12272

18358840

Maximum Brightness

25.6

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-21

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

2.032903

1-sigma variation

0.000734

Unit

Eccentricity (e)

Value

0.508643

1-sigma variation

0.000178

Unit

Inclination (i)

Value

6.7930

1-sigma variation

0.0016

Unit

Long. of Ascending Node (Ω)

Value

33.1267

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

194.5498

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

0.00298

1-sigma variation

0.00008

Unit

Perihelion distance

Value

0.998880

1-sigma variation

Unit

Aphelion distance

Value

3.066925

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.974273

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.004259

1-sigma variation

Unit

MOID

Value

0.003278

1-sigma variation

Unit

Orbit Period

Value

1058.7009

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.38865E-7	1.31016E-7	1.20664E-6	9.79079E-8	4.42663E-7	5.57618E-8
e	1.31016E-7	3.18545E-8	2.93376E-7	2.38049E-8	1.07630E-7	1.35567E-8
i	1.20664E-6	2.93376E-7	2.70216E-6	2.19288E-7	9.92112E-7	1.24604E-7
Ω	9.79079E-8	2.38049E-8	2.19288E-7	1.78044E-8	8.06597E-8	1.00635E-8
ω	4.42663E-7	1.07630E-7	9.92112E-7	8.06597E-8	3.68429E-7	4.44196E-8
M	5.57618E-8	1.35567E-8	1.24604E-7	1.00635E-8	4.44196E-8	6.17200E-9

Date of computation: 2025-04-27 13:00 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

27.405

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

9 - 20*

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

[-]

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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

0.717714

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-20.417813

Unit

Source

[2]

Last Observation

Value

2025-04-24.624728

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

46 (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 2025HU 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	1952-03-26 06:38	> 1 w	0.1480318	0.0315167	0.1089072
EARTH	1984-06-03 10:54	> 1 w	0.0920175	0.0592386	0.0878553
EARTH	2025-04-22 01:26	< 1 s	0.0084354	0.0084280	0.0000025
EARTH	2051-06-14 07:23	> 1 w	0.1227213	0.0748956	0.0609950
EARTH	2077-06-14 10:58	> 1 w	0.1207885	0.0766966	0.0674524

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
352.22735101	110.98906767	0.00327845	MINIMUM
1.43483068	307.10604720	1.98885857	SADDLE
180.57237626	305.91675545	2.07721428	SADDLE
180.33739791	125.78859722	4.07597104	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025HU

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2106-04-24.328	90373.328	-4.057	0.000	0.78 ± 0.039	1.10E5	2.94E-9	1.60E-10	-9.93	0


Based on 37 optical observations (of which 0 are rejected as outliers) from 2025/04/21.059 to 2025/04/21.622.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.64 and 1.64 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250421 230451.177 UTC.

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Download Impactor Table as: