Asteroids

2025SL22 help

Last update: 2025-10-03 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.741

Aphelion (Q)

1.062

Eccentricity (e)

0.178

Inclination (i)

2.7

deg

Orbit period (P)

312.7

Earth MOID

0.00032

U parameter

6.3

Next Earth close approach

Date

2031-09-24

Nominal distance (from Earth center)

0.01577

2358732

Maximum Brightness

21.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-29

Observatory

Pan-STARRS 1, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.901612

1-sigma variation

0.000035

Unit

Eccentricity (e)

Value

0.177722

1-sigma variation

0.000086

Unit

Inclination (i)

Value

2.7384

1-sigma variation

0.0014

Unit

Long. of Ascending Node (Ω)

Value

359.6523

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

222.3433

1-sigma variation

0.0015

Unit

Mean Anomaly (M)

Value

191.27934

1-sigma variation

0.00521

Unit

Perihelion distance

Value

0.741375

1-sigma variation

Unit

Aphelion distance

Value

1.061849

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001085

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.225296

1-sigma variation

Unit

MOID

Value

0.000319

1-sigma variation

Unit

Orbit Period

Value

312.7001

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.22838E-9	-3.00312E-9	-4.74373E-8	8.62326E-9	-2.71924E-8	1.53647E-7
e	-3.00312E-9	7.37747E-9	1.16927E-7	-1.81554E-8	7.41197E-8	-3.92329E-7
i	-4.74373E-8	1.16927E-7	1.85918E-6	-2.49833E-7	1.25111E-6	-6.38237E-6
Ω	8.62326E-9	-1.81554E-8	-2.49833E-7	3.29825E-7	4.32560E-7	-3.25635E-7
ω	-2.71924E-8	7.41197E-8	1.25111E-6	4.32560E-7	2.25822E-6	-7.00185E-6
M	1.53647E-7	-3.92329E-7	-6.38237E-6	-3.25635E-7	-7.00185E-6	2.71162E-5

Date of computation: 2025-10-03 13:15 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

28.519

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

5 - 12*

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

0.791805

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-29.48086

Unit

Source

[2]

Last Observation

Value

2025-10-03.15761

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (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 2025SL22 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	1959-09-21 12:15	> 1 w	0.0434135	0.0032883	0.5319123
EARTH	1966-10-20 04:17	> 1 mo	0.0731946	0.0265334	0.3550380
EARTH	1967-03-06 15:50	> 1 mo	0.1869717	0.1110936	0.3913952
EARTH	1973-12-27 23:59	> 1 mo	0.0558085	0.0466346	0.3045878
EARTH	1981-01-01 11:18	> 1 w	0.1371432	0.0467204	0.6102925
EARTH	1986-09-23 02:11	> 1 w	0.1694025	0.0037555	0.3864153
EARTH	1993-09-23 12:26	> 1 d	0.0105051	0.0018774	0.0129847
EARTH	2006-11-07 01:02	> 1 w	0.0828673	0.0780438	0.0018745
EARTH	2007-02-12 21:42	> 1 w	0.1591780	0.1270432	0.0113406
EARTH	2012-09-22 16:48	409.4	0.1991830	0.1642591	0.0116417
EARTH	2019-12-30 18:55	180.4	0.0480278	0.0470236	0.0005106
EARTH	2025-09-23 06:39	< 1 min	0.0085143	0.0084988	0.0000051
EARTH	2031-09-24 16:43	399.5	0.0157672	0.0105676	0.0017335
EARTH	2037-12-10 06:03	> 1 w	0.0623346	0.0483420	0.0081177
VENUS	2042-07-20 03:23	> 1 w	0.0480057	0.0441118	0.0101461
EARTH	2043-12-24 16:10	> 1 d	0.1461977	0.0460840	0.0597343
EARTH	2054-09-19 21:44	> 1 d	0.0890576	0.0003036	0.2047692
EARTH	2060-09-27 04:07	> 1 w	0.0321194	0.0014997	0.0906666
EARTH	2066-12-17 04:21	> 1 mo	0.0545178	0.0461052	0.1166301
EARTH	2072-12-22 10:11	> 1 w	0.1785293	0.0452036	0.6188355
EARTH	2083-09-21 10:50	> 1 mo	0.0089192	0.0012552	0.6514195
EARTH	2089-09-21 04:39	> 1 mo	0.1521459	0.0006850	26.6411300
EARTH	2102-12-29 18:37	> 1 mo	0.1099379	0.0444842	61.4163059
EARTH	2108-12-22 14:04	> 1 mo	0.0540014	0.0449363	27.5987393
EARTH	2114-10-23 11:31	> 1 mo	0.0730683	0.0288636	26.2761834
EARTH	2115-02-22 00:47	> 1 mo	0.1781541	0.0970193	40.4746094
EARTH	2120-09-20 10:00	> 1 mo	0.0288718	0.0018458	62.0546059

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
129.84090245	258.94563773	0.00031891	MINIMUM
240.07712229	352.40436648	0.04695225	MINIMUM
188.97243220	308.88497552	0.07930908	SADDLE
7.25565629	128.28017103	0.27088147	SADDLE
6.07693499	306.87303079	1.73224103	SADDLE
184.11419505	124.87438320	2.07168744	MAXIMUM

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MOID Plots

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