Asteroids

2025SG15 help

Last update: 2025-09-28 19:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.970

Aphelion (Q)

2.197

Eccentricity (e)

0.388

Inclination (i)

4.8

deg

Orbit period (P)

727.8

Earth MOID

0.00100

U parameter

6.6

Next Earth close approach

Date

2027-09-17

Nominal distance (from Earth center)

0.03057

4573664

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

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

1.583516

1-sigma variation

0.000209

Unit

Eccentricity (e)

Value

0.387528

1-sigma variation

0.000084

Unit

Inclination (i)

Value

4.7919

1-sigma variation

0.0007

Unit

Long. of Ascending Node (Ω)

Value

4.5836

1-sigma variation

1.228E-5

Unit

Arg. of Perihelion (ω)

Value

331.1363

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

38.80865

1-sigma variation

0.00802

Unit

Perihelion distance

Value

0.969860

1-sigma variation

Unit

Aphelion distance

Value

2.197172

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.002112

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.038611

1-sigma variation

Unit

MOID

Value

0.000999

1-sigma variation

Unit

Orbit Period

Value

727.8336

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.37111E-8	1.76415E-8	1.52739E-7	-7.71637E-10	-4.93066E-8	-1.67472E-6
e	1.76415E-8	7.12208E-9	6.16904E-8	-2.96149E-10	-2.11750E-8	-6.75426E-7
i	1.52739E-7	6.16904E-8	5.35538E-7	-2.24268E-9	-2.01039E-7	-5.84110E-6
Ω	-7.71637E-10	-2.96149E-10	-2.24268E-9	1.50798E-10	-8.63932E-9	3.31495E-8
ω	-4.93066E-8	-2.11750E-8	-2.01039E-7	-8.63932E-9	8.48022E-7	1.58957E-6
M	-1.67472E-6	-6.75426E-7	-5.84110E-6	3.31495E-8	1.58957E-6	6.42775E-5

Date of computation: 2025-09-28 19:30 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

25.835

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

18 - 40*

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

0.7

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.534484

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-28.123938

Unit

Source

[2]

Last Observation

Value

2025-09-28.78744

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

64 (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 2025SG15 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	1973-10-15 07:14	81.7	0.1544340	0.1515959	0.0009461
EARTH	1975-07-11 08:17	107.9	0.1048516	0.1039270	0.0003094
EARTH	2000-09-01 22:33	> 1 d	0.0570550	0.0366275	0.0074530
EARTH	2025-09-27 14:32	< 1 s	0.0023460	0.0023452	0.0000003
EARTH	2027-09-17 15:01	603.6	0.0309768	0.0281575	0.0009403
EARTH	2029-08-26 06:27	987.9	0.0607320	0.0593031	0.0004851
EARTH	2031-08-01 17:04	827.5	0.0720295	0.0712762	0.0002994
EARTH	2033-07-15 14:40	489.7	0.1026468	0.0977394	0.0016938
EARTH	2035-07-06 07:44	318.2	0.1747167	0.1663418	0.0028120

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
18.98608665	263.65530639	0.00099933	MINIMUM
178.81430514	53.35159315	1.20799674	SADDLE
357.88638502	52.12057639	1.95984045	SADDLE
179.25636677	233.63600468	3.20740188	MAXIMUM

Download:

MOID Plots

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