Asteroids

2025HB help

Last update: 2025-04-19 13:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.003

Aphelion (Q)

1.932

Eccentricity (e)

0.316

Inclination (i)

7.3

deg

Orbit period (P)

649.1

Earth MOID

0.00391

U parameter

6.1

Next Earth close approach

Date

2041-03-26

Nominal distance (from Earth center)

0.07124

10657669

Maximum Brightness

24.9

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

27.7

mag

Diameter

8 - 17*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-18

Observatory

Catalina Sky 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.467190

1-sigma variation

0.000083

Unit

Eccentricity (e)

Value

0.316500

1-sigma variation

0.000039

Unit

Inclination (i)

Value

7.3284

1-sigma variation

0.0006

Unit

Long. of Ascending Node (Ω)

Value

29.6120

1-sigma variation

1.903E-5

Unit

Arg. of Perihelion (ω)

Value

167.3770

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

14.72054

1-sigma variation

0.00133

Unit

Perihelion distance

Value

1.002825

1-sigma variation

Unit

Aphelion distance

Value

1.931555

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.915361

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.004070

1-sigma variation

Unit

MOID

Value

0.003913

1-sigma variation

Unit

Orbit Period

Value

649.1245

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.82370E-9	3.18720E-9	5.30725E-8	1.52186E-9	-2.55369E-9	-1.09406E-7
e	3.18720E-9	1.48869E-9	2.47861E-8	7.11357E-10	-1.22798E-9	-5.10842E-8
i	5.30725E-8	2.47861E-8	4.13759E-7	1.17088E-8	-1.47774E-8	-8.53349E-7
Ω	1.52186E-9	7.11357E-10	1.17088E-8	3.61962E-10	-1.52415E-9	-2.39446E-8
ω	-2.55369E-9	-1.22798E-9	-1.47774E-8	-1.52415E-9	6.32887E-8	1.09375E-8
M	-1.09406E-7	-5.10842E-8	-8.53349E-7	-2.39446E-8	1.09375E-8	1.76858E-6

Date of computation: 2025-04-19 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

27.721

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

8 - 17*

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

0.814819

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-18.348959

Unit

Source

[2]

Last Observation

Value

2025-04-19.37214

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

69 (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

Close Approaches for 2025HB 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	1951-04-20 10:22	> 1 mo	0.0044309	0.0041075	0.1198584
EARTH	1958-05-15 16:45	> 1 mo	0.1459623	0.0254403	0.5210406
EARTH	2002-03-18 23:45	> 1 w	0.0941528	0.0421900	0.1264037
EARTH	2009-04-21 01:20	> 1 d	0.0067287	0.0038714	0.0051043
EARTH	2025-04-19 05:11	< 1 s	0.0039584	0.0039572	0.0000004
EARTH	2041-03-26 07:56	> 1 d	0.0712421	0.0526744	0.0063720
EARTH	2080-04-19 15:09	1396.3	0.0040429	0.0035175	0.0014225
EARTH	2089-03-14 04:16	> 1 mo	0.1332718	0.0486003	0.5089131
EARTH	2123-05-24 19:41	> 1 mo	0.1887131	0.0408966	1.5113801

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
8.76670161	106.00880442	0.00391326	MINIMUM
180.82013295	275.92273639	0.93401068	SADDLE
2.52812462	277.41332756	2.00078207	SADDLE
181.62060969	96.49648514	2.93278084	MAXIMUM

Download:

MOID Plots

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