Asteroids

2025SO1 help

Last update: 2025-09-21 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.413

Aphelion (Q)

1.160

Eccentricity (e)

0.475

Inclination (i)

5.6

deg

Orbit period (P)

254.9

Earth MOID

0.01431

U parameter

6.8

Next Earth close approach

Date

2027-07-17

Nominal distance (from Earth center)

0.08628

12907958

Maximum Brightness

22.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.5

mag

Diameter

21 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-17

Observatory

Novaastro Observatory, Banon

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

0.786670

1-sigma variation

0.000052

Unit

Eccentricity (e)

Value

0.475152

1-sigma variation

0.000252

Unit

Inclination (i)

Value

5.6079

1-sigma variation

0.0049

Unit

Long. of Ascending Node (Ω)

Value

350.8120

1-sigma variation

0.0011

Unit

Arg. of Perihelion (ω)

Value

154.4877

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

338.47854

1-sigma variation

0.03152

Unit

Perihelion distance

Value

0.412882

1-sigma variation

Unit

Aphelion distance

Value

1.160458

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.059674

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.568259

1-sigma variation

Unit

MOID

Value

0.014311

1-sigma variation

Unit

Orbit Period

Value

254.8515

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.66568E-9	-1.29843E-8	-2.55281E-7	-5.57123E-8	-1.11545E-7	-1.62164E-6
e	-1.29843E-8	6.35113E-8	1.24636E-6	2.70366E-7	5.38080E-7	7.94174E-6
i	-2.55281E-7	1.24636E-6	2.44874E-5	5.33107E-6	1.06187E-5	1.55765E-4
Ω	-5.57123E-8	2.70366E-7	5.33107E-6	1.17366E-6	2.34576E-6	3.37301E-5
ω	-1.11545E-7	5.38080E-7	1.06187E-5	2.34576E-6	4.77596E-6	6.70129E-5
M	-1.62164E-6	7.94174E-6	1.55765E-4	3.37301E-5	6.70129E-5	9.93418E-4

Date of computation: 2025-09-21 13:16 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

25.473

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

21 - 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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.426961

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-17.90068

Unit

Source

[2]

Last Observation

Value

2025-09-20.87637

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

110 (1)

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 2025SO1 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	1951-08-13 08:46	> 1 d	0.1548303	0.1522157	0.0009085
EARTH	1958-09-01 23:10	> 1 d	0.1375702	0.1270979	0.0035196
EARTH	1960-07-16 10:26	359.2	0.1686611	0.1405793	0.0097405
EARTH	1965-09-18 09:00	> 1 d	0.0608838	0.0336821	0.0093153
EARTH	1967-07-16 01:50	276.4	0.0885076	0.0855516	0.0030024
EARTH	1972-09-22 05:36	27.2	0.0424511	0.0136548	0.0133214
EARTH	1974-07-23 04:19	> 1 d	0.1111475	0.0953648	0.0061840
EARTH	1979-09-20 13:35	410.8	0.1779417	0.1482884	0.0098920
EARTH	1981-08-11 15:23	> 1 d	0.1534971	0.1497814	0.0012792
EARTH	1988-09-01 06:02	607.4	0.1382586	0.1366066	0.0005516
EARTH	1990-07-17 04:19	67.3	0.1717092	0.1697018	0.0006725
EARTH	1995-09-18 10:22	566.1	0.0660077	0.0556178	0.0034849
EARTH	1997-07-15 16:18	130.4	0.0898035	0.0854643	0.0018422
EARTH	2002-09-22 20:26	76.6	0.0356982	0.0145753	0.0090084
EARTH	2004-07-22 05:18	1425.5	0.1081513	0.0980369	0.0038024
EARTH	2009-09-20 02:05	322.9	0.1812053	0.1572706	0.0079833
EARTH	2011-08-13 10:59	> 1 d	0.1537500	0.1523909	0.0004781
EARTH	2018-09-05 22:18	894.5	0.1269135	0.1218081	0.0017055
EARTH	2020-07-16 03:32	67.4	0.1430645	0.1378144	0.0017664
EARTH	2025-09-21 08:55	< 1 min	0.0247204	0.0246720	0.0000161
EARTH	2027-07-17 23:25	120.9	0.0862844	0.0852397	0.0003810
EARTH	2032-09-21 21:39	102.5	0.1004911	0.0888880	0.0038739
EARTH	2034-07-31 07:11	1272.1	0.1342830	0.1284839	0.0019784
EARTH	2041-08-21 16:35	> 1 d	0.1535088	0.1513714	0.0007437
EARTH	2048-09-11 09:35	> 1 d	0.1047791	0.0792629	0.0086003
EARTH	2050-07-16 03:43	195.0	0.1151438	0.0895347	0.0110423
EARTH	2055-09-22 16:58	741.3	0.0152010	0.0152001	0.0000572
EARTH	2057-07-19 02:00	> 1 d	0.0913114	0.0833896	0.0161502
EARTH	2062-09-21 22:16	> 1 d	0.1291325	0.0170275	0.1239895
EARTH	2064-08-04 11:32	> 1 w	0.1430954	0.1089914	0.0390057
EARTH	2071-08-25 16:40	> 1 mo	0.1504522	0.1098238	0.0397754
EARTH	2078-09-13 12:27	> 1 mo	0.0978562	0.0250428	0.1794640
EARTH	2080-07-15 16:39	> 1 d	0.1089053	0.0826904	0.1814952
EARTH	2085-09-22 07:22	> 1 w	0.0160158	0.0159267	0.0264992
EARTH	2087-07-19 05:57	> 1 mo	0.0884130	0.0822742	0.1735269
EARTH	2092-09-21 22:21	> 1 w	0.1127787	0.0174957	1.3614886
EARTH	2094-08-02 06:30	> 1 mo	0.1370779	0.1001190	0.5218412
EARTH	2101-08-23 13:10	> 1 mo	0.1526825	0.1326177	0.2754428
EARTH	2108-09-12 15:51	> 1 mo	0.1045050	0.0274359	2.2528828
EARTH	2110-07-17 09:29	> 1 mo	0.1127186	0.0814787	2.7065792
EARTH	2115-09-23 20:21	> 1 mo	0.0170753	0.0167331	0.9436772
EARTH	2117-07-19 18:07	> 1 mo	0.0865846	0.0809395	3.0844568
EARTH	2122-09-23 13:14	> 1 mo	0.1120676	0.0183202	24.6861887
EARTH	2124-08-02 07:55	> 1 mo	0.1355995	0.0981663	9.7555081

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
233.80683727	258.60041440	0.01431144	MINIMUM
129.61672956	192.99471309	0.08400614	MINIMUM
178.30866057	223.68942380	0.15437211	SADDLE
2.60622249	46.72229814	0.57627030	SADDLE
3.06719221	227.43053109	1.42553134	SADDLE
181.28898347	45.46585269	2.14849129	MAXIMUM

Download:

MOID Plots

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