Asteroids

2025SM6 help

Last update: 2025-09-25 13:26 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.495

Aphelion (Q)

1.063

Eccentricity (e)

0.365

Inclination (i)

25.5

deg

Orbit period (P)

251.1

Earth MOID

0.00792

U parameter

6.1

Next Earth close approach

Date

2036-09-23

Nominal distance (from Earth center)

0.00834

1247441

Maximum Brightness

17.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-24

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.779006

1-sigma variation

0.000017

Unit

Eccentricity (e)

Value

0.365178

1-sigma variation

0.000065

Unit

Inclination (i)

Value

25.4685

1-sigma variation

0.0105

Unit

Long. of Ascending Node (Ω)

Value

1.5643

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

204.1274

1-sigma variation

0.0051

Unit

Mean Anomaly (M)

Value

215.88671

1-sigma variation

0.01279

Unit

Perihelion distance

Value

0.494530

1-sigma variation

Unit

Aphelion distance

Value

1.063481

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.009097

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.491268

1-sigma variation

Unit

MOID

Value

0.007923

1-sigma variation

Unit

Orbit Period

Value

251.1362

1-sigma variation

Unit

U parameter

Value

6.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.86528E-10	-8.53037E-10	-1.25607E-7	-1.55291E-9	-1.05993E-8	4.34495E-8
e	-8.53037E-10	4.26824E-9	6.81322E-7	8.37082E-9	2.40556E-7	-6.50312E-7
i	-1.25607E-7	6.81322E-7	1.09784E-4	1.34794E-6	4.18041E-5	-1.11671E-4
Ω	-1.55291E-9	8.37082E-9	1.34794E-6	1.65513E-8	5.10484E-7	-1.36478E-6
ω	-1.05993E-8	2.40556E-7	4.18041E-5	5.10484E-7	2.56618E-5	-6.45946E-5
M	4.34495E-8	-6.50312E-7	-1.11671E-4	-1.36478E-6	-6.45946E-5	1.63591E-4

Date of computation: 2025-09-25 13:26 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

26.439

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

14 - 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

[-]

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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

0.6

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.735843

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-24.37022

Unit

Source

[2]

Last Observation

Value

2025-09-24.964451

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (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 2025SM6 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	1952-09-25 13:44	452.8	0.0778341	0.0516996	0.0088097
EARTH	1963-09-24 05:56	31.4	0.0451327	0.0107908	0.0131834
EARTH	1972-09-29 00:37	650.3	0.1483426	0.1247137	0.0079380
EARTH	1983-09-24 16:41	50.8	0.0111962	0.0088012	0.0015786
EARTH	1994-09-24 02:36	15.1	0.0693448	0.0609524	0.0028029
EARTH	2003-10-01 06:16	180.2	0.1699613	0.1643263	0.0018818
EARTH	2005-09-24 22:40	52.8	0.1647762	0.1584220	0.0021186
EARTH	2014-09-26 13:03	65.8	0.0862100	0.0827868	0.0011421
EARTH	2025-09-24 07:45	< 1 s	0.0113383	0.0113278	0.0000035
EARTH	2036-09-24 02:10	23.5	0.0106619	0.0088498	0.0007479
EARTH	2047-09-26 17:58	247.6	0.0822576	0.0680669	0.0047481
EARTH	2058-09-30 18:42	594.3	0.1642991	0.1440196	0.0068016
EARTH	2060-09-24 08:47	156.2	0.1352932	0.1096233	0.0085713
EARTH	2071-09-24 13:26	27.0	0.0445884	0.0167771	0.0096537
EARTH	2082-09-24 20:26	89.0	0.0172418	0.0087802	0.0034510
EARTH	2093-09-28 21:05	842.3	0.1359875	0.1037951	0.0108415
EARTH	2095-09-25 15:05	369.1	0.1610745	0.1141983	0.0156696
EARTH	2106-09-25 11:19	223.7	0.0281947	0.0081505	0.0280886
EARTH	2117-09-26 13:04	130.7	0.0547888	0.0456926	0.0030420

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
144.46189267	260.76120706	0.00793306	MINIMUM
31.16783956	145.66638485	0.56695224	SADDLE
14.20926894	300.41308481	1.47892537	SADDLE
177.44305899	101.58335943	2.06031265	MAXIMUM

Download:

MOID Plots

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