Asteroids

2025HR help

Last update: 2025-05-04 12:45 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.696

Aphelion (Q)

1.360

Eccentricity (e)

0.323

Inclination (i)

17.0

deg

Orbit period (P)

380.7

Earth MOID

0.01416

U parameter

6.9

Next Earth close approach

Date

2044-09-26

Nominal distance (from Earth center)

0.17313

25900161

Maximum Brightness

26.5

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-20

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

1.027909

1-sigma variation

0.000115

Unit

Eccentricity (e)

Value

0.323048

1-sigma variation

0.000151

Unit

Inclination (i)

Value

16.9819

1-sigma variation

0.0096

Unit

Long. of Ascending Node (Ω)

Value

210.4626

1-sigma variation

2.618E-5

Unit

Arg. of Perihelion (ω)

Value

251.4343

1-sigma variation

0.0076

Unit

Mean Anomaly (M)

Value

84.78485

1-sigma variation

0.02866

Unit

Perihelion distance

Value

0.695844

1-sigma variation

Unit

Aphelion distance

Value

1.359973

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.021373

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.159867

1-sigma variation

Unit

MOID

Value

0.014161

1-sigma variation

Unit

Orbit Period

Value

380.6538

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.32927E-8	1.74548E-8	1.10790E-6	3.00552E-9	8.78523E-7	-3.30475E-6
e	1.74548E-8	2.29239E-8	1.45495E-6	3.94708E-9	1.15335E-6	-4.33971E-6
i	1.10790E-6	1.45495E-6	9.23791E-5	2.50610E-7	7.32005E-5	-2.75436E-4
Ω	3.00552E-9	3.94708E-9	2.50610E-7	6.85346E-10	1.98581E-7	-7.47221E-7
ω	8.78523E-7	1.15335E-6	7.32005E-5	1.98581E-7	5.80827E-5	-2.18405E-4
M	-3.30475E-6	-4.33971E-6	-2.75436E-4	-7.47221E-7	-2.18405E-4	8.21623E-4

Date of computation: 2025-05-04 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

26.274

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

15 - 30*

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

0.756427

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-20.371315

Unit

Source

[2]

Last Observation

Value

2025-04-24.37433

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (4)

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 2025HR 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	1952-04-17 22:29	1024.9	0.0181710	0.0154284	0.0142487
EARTH	1971-10-06 04:56	406.4	0.1203016	0.1184779	0.0006990
EARTH	1976-04-17 01:19	291.4	0.0520244	0.0241420	0.0098600
EARTH	1995-09-26 19:01	> 1 d	0.1802545	0.1371163	0.0176538
EARTH	1996-10-20 00:07	> 1 d	0.1633366	0.1337329	0.0148305
EARTH	2000-04-18 02:41	> 1 d	0.1883424	0.1093013	0.0265615
EARTH	2001-04-20 17:40	1364.5	0.0702984	0.0146109	0.0274864
EARTH	2020-10-10 12:04	598.4	0.1237519	0.1211429	0.0010627
EARTH	2025-04-18 12:18	< 1 min	0.0150410	0.0150166	0.0000081
EARTH	2044-09-26 22:02	> 1 d	0.1731319	0.1395336	0.0132925
EARTH	2045-10-21 05:52	> 1 d	0.1666610	0.1385086	0.0120982
EARTH	2049-04-18 08:26	1283.5	0.1879029	0.1271116	0.0203664
EARTH	2050-04-21 02:10	1091.7	0.0672396	0.0133457	0.0221301
EARTH	2069-10-05 03:13	> 1 d	0.1205536	0.1184251	0.0033208
EARTH	2074-04-17 08:52	304.4	0.0768882	0.0339269	0.0146278
EARTH	2075-04-25 17:06	702.3	0.1803549	0.1396937	0.0135615
EARTH	2094-10-10 10:50	> 1 d	0.1211332	0.1190720	0.0021565
EARTH	2099-04-18 11:22	605.8	0.0376814	0.0127099	0.0170855
EARTH	2119-10-04 02:35	1055.1	0.1305707	0.1219007	0.0038563
EARTH	2124-04-17 21:59	217.7	0.1486349	0.1194033	0.0097649
EARTH	2125-04-23 07:14	457.8	0.1001054	0.0711526	0.0096728

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
87.54558390	105.36775757	0.01416050	MINIMUM
289.94680899	272.56846445	0.11894709	MINIMUM
8.31182125	10.69143355	0.37425583	SADDLE
188.53943023	185.29364070	0.47964768	SADDLE
2.46087063	182.38615169	1.69560876	SADDLE
177.85224463	357.25374141	2.32142133	MAXIMUM

Download:

MOID Plots

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