Asteroids

2025SN15 help

Last update: 2025-09-29 01:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.807

Aphelion (Q)

2.345

Eccentricity (e)

0.488

Inclination (i)

0.4

deg

Orbit period (P)

722.6

Earth MOID

0.00211

U parameter

7.7

Next Earth close approach

Date

2027-09-07

Nominal distance (from Earth center)

0.12288

18382138

Maximum Brightness

26.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

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

1.575986

1-sigma variation

0.001173

Unit

Eccentricity (e)

Value

0.487758

1-sigma variation

0.000450

Unit

Inclination (i)

Value

0.4223

1-sigma variation

0.0008

Unit

Long. of Ascending Node (Ω)

Value

165.6867

1-sigma variation

0.0356

Unit

Arg. of Perihelion (ω)

Value

130.5390

1-sigma variation

0.0286

Unit

Mean Anomaly (M)

Value

51.51059

1-sigma variation

0.06470

Unit

Perihelion distance

Value

0.807286

1-sigma variation

Unit

Aphelion distance

Value

2.344687

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.766199

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.096373

1-sigma variation

Unit

MOID

Value

0.002114

1-sigma variation

Unit

Orbit Period

Value

722.6485

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.37555E-6	5.27106E-7	7.92637E-7	2.56642E-5	-2.16422E-5	-7.58568E-5
e	5.27106E-7	2.02530E-7	2.94246E-7	9.19303E-6	-7.80215E-6	-2.90330E-5
i	7.92637E-7	2.94246E-7	6.35315E-7	2.66449E-5	-2.17031E-5	-4.43244E-5
Ω	2.56642E-5	9.19303E-6	2.66449E-5	1.26948E-3	-1.01708E-3	-1.45673E-3
ω	-2.16422E-5	-7.80215E-6	-2.17031E-5	-1.01708E-3	8.17986E-4	1.22524E-3
M	-7.58568E-5	-2.90330E-5	-4.43244E-5	-1.45673E-3	1.22524E-3	4.18550E-3

Date of computation: 2025-09-29 01:00 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

26.288

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

15 - 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

[-]

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

1.0

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.806505

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-27.95986

Unit

Source

[2]

Last Observation

Value

2025-09-28.934224

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (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 2025SN15 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	2019-10-07 03:54	145.6	0.1657916	0.1595682	0.0020745
EARTH	2021-10-02 03:42	572.2	0.0900285	0.0712214	0.0062695
EARTH	2023-09-27 20:12	> 1 d	0.0233277	0.0021093	0.0136576
EARTH	2025-09-24 21:51	1.7	0.0069183	0.0069029	0.0000051
EARTH	2027-09-07 16:50	> 1 d	0.1228770	0.0907023	0.0107262
EARTH	2029-08-08 02:45	> 1 w	0.1936229	0.1712064	0.0074742
EARTH	2033-06-15 00:22	> 1 w	0.1725148	0.0993140	0.0244228
EARTH	2035-05-18 16:30	> 1 w	0.0727565	0.0066100	0.0568484
EARTH	2037-05-05 17:19	> 1 d	0.0526380	0.0066114	0.0644544
EARTH	2039-04-27 14:41	> 1 d	0.1948997	0.0506585	0.0481611
EARTH	2112-10-02 17:45	> 1 w	0.0767327	0.0025007	0.3543588
EARTH	2114-09-23 06:22	> 1 w	0.0426658	0.0023958	0.2620570
EARTH	2116-08-28 21:03	> 1 w	0.1559088	0.0184630	0.0459943
EARTH	2120-07-02 16:43	> 1 mo	0.1989482	0.0173543	0.0663923
EARTH	2122-06-03 06:03	> 1 mo	0.1361518	0.0071713	0.3521936
EARTH	2124-05-12 18:23	> 1 mo	0.0141980	0.0068094	0.5729556

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
41.83031811	262.05273055	0.00211408	MINIMUM
317.27857552	126.76022896	0.00660468	MINIMUM
359.43584419	194.26548156	0.21037545	SADDLE
179.80908560	14.70139056	1.36060320	SADDLE
359.46422600	14.30449118	1.79137353	SADDLE
179.80550316	194.69573729	3.36225894	MAXIMUM

Download:

MOID Plots

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