Asteroids

2025SP23 help

Last update: 2025-10-01 02:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.811

Aphelion (Q)

3.854

Eccentricity (e)

0.652

Inclination (i)

4.3

deg

Orbit period (P)

1301.1

Earth MOID

0.00159

U parameter

8.6

Next Earth close approach

Date

2025-10-09

Nominal distance (from Earth center)

0.00331

495009

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.332371

1-sigma variation

0.010858

Unit

Eccentricity (e)

Value

0.652334

1-sigma variation

0.001812

Unit

Inclination (i)

Value

4.3309

1-sigma variation

0.0115

Unit

Long. of Ascending Node (Ω)

Value

16.5003

1-sigma variation

0.0312

Unit

Arg. of Perihelion (ω)

Value

57.2708

1-sigma variation

0.0346

Unit

Mean Anomaly (M)

Value

1.13697

1-sigma variation

0.00461

Unit

Perihelion distance

Value

0.810886

1-sigma variation

Unit

Aphelion distance

Value

3.853855

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.008367

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.067249

1-sigma variation

Unit

MOID

Value

0.001587

1-sigma variation

Unit

Orbit Period

Value

1301.0523

1-sigma variation

Unit

U parameter

Value

8.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.17898E-4	1.96659E-5	1.22247E-4	-2.58336E-4	3.07053E-4	3.98945E-5
e	1.96659E-5	3.28194E-6	2.04747E-5	-4.39036E-5	5.20187E-5	6.76606E-6
i	1.22247E-4	2.04747E-5	1.31107E-4	-3.10064E-4	3.59945E-4	4.71583E-5
Ω	-2.58336E-4	-4.39036E-5	-3.10064E-4	9.76216E-4	-1.07678E-3	-1.43767E-4
ω	3.07053E-4	5.20187E-5	3.59945E-4	-1.07678E-3	1.19793E-3	1.59366E-4
M	3.98945E-5	6.76606E-6	4.71583E-5	-1.43767E-4	1.59366E-4	2.12483E-5

Date of computation: 2025-10-01 02:00 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

25.387

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

22 - 50*

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

0.6

Unit

Source

[1]

Normalized RMS of residuals

Value

0.406269

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-29.399699

Unit

Source

[2]

Last Observation

Value

2025-10-01.03672

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2025SP23 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	1987-11-01 19:32	> 1 mo	0.0067631	0.0035638	1.1074629
MARS	1994-04-10 19:06	> 1 mo	0.0331272	0.0219803	0.7986828
EARTH	1998-02-01 03:52	> 1 mo	0.0698818	0.0682082	0.1783651
EARTH	2005-01-20 10:00	> 1 mo	0.1000744	0.0685429	0.4360123
EARTH	2011-12-16 02:35	> 1 mo	0.1859161	0.1425568	0.0724020
EARTH	2018-10-30 20:58	> 1 mo	0.1320456	0.0173576	0.1928566
EARTH	2025-10-09 01:11	38.3	0.0033089	0.0032734	0.0000119
EARTH	2057-12-16 00:01	> 1 mo	0.1779549	0.1314763	0.1620687
MARS	2082-09-06 05:00	> 1 mo	0.0153221	0.0085444	0.9762376
EARTH	2082-10-25 22:34	> 1 mo	0.1067426	0.0015674	0.9945146
EARTH	2107-10-07 17:34	> 1 mo	0.0603606	0.0101111	3.0972487
EARTH	2115-02-14 03:10	> 1 mo	0.1590368	0.0590084	1.6242622

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
331.20232787	274.98639722	0.00158674	MINIMUM
27.97219006	29.04557453	0.06809530	MINIMUM
0.34320672	333.67879442	0.18361370	SADDLE
359.41339398	151.70433009	1.82610176	SADDLE
179.92088672	152.23636304	2.84049178	SADDLE
179.82730901	332.19691371	4.83776558	MAXIMUM

Download:

MOID Plots

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