Asteroids

2025SC5 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.910

Aphelion (Q)

2.301

Eccentricity (e)

0.433

Inclination (i)

15.0

deg

Orbit period (P)

742.9

Earth MOID

0.00192

U parameter

7.2

Next Earth close approach

Date

2082-09-02

Nominal distance (from Earth center)

0.13846

20712886

Maximum Brightness

23.4

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

23.9

mag

Diameter

40 - 100*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-22

Observatory

ATLAS South Africa, Sutherland

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

1.605332

1-sigma variation

0.000549

Unit

Eccentricity (e)

Value

0.433117

1-sigma variation

0.000210

Unit

Inclination (i)

Value

15.0138

1-sigma variation

0.0050

Unit

Long. of Ascending Node (Ω)

Value

178.3868

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

132.9165

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

47.12963

1-sigma variation

0.02643

Unit

Perihelion distance

Value

0.910035

1-sigma variation

Unit

Aphelion distance

Value

2.300629

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.852990

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.002722

1-sigma variation

Unit

MOID

Value

0.001916

1-sigma variation

Unit

Orbit Period

Value

742.9263

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.01183E-7	1.15393E-7	2.74466E-6	-7.10486E-8	7.54277E-7	-1.45051E-5
e	1.15393E-7	4.42122E-8	1.05169E-6	-2.71966E-8	2.88518E-7	-5.55726E-6
i	2.74466E-6	1.05169E-6	2.50234E-5	-6.45129E-7	6.83142E-6	-1.32173E-4
Ω	-7.10486E-8	-2.71966E-8	-6.45129E-7	1.72698E-8	-1.86820E-7	3.42415E-6
ω	7.54277E-7	2.88518E-7	6.83142E-6	-1.86820E-7	2.05945E-6	-3.63730E-5
M	-1.45051E-5	-5.55726E-6	-1.32173E-4	3.42415E-6	-3.63730E-5	6.98587E-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

23.876

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

40 - 100*

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

0.654805

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-22.908934

Unit

Source

[2]

Last Observation

Value

2025-09-25.172643

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (3)

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 2025SC5 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	2021-08-23 11:41	> 1 d	0.1798895	0.1543047	0.0086572
EARTH	2023-09-11 21:12	1083.1	0.0877556	0.0708948	0.0056245
EARTH	2025-09-21 18:57	< 1 min	0.0075980	0.0075900	0.0000027
EARTH	2082-08-24 02:24	> 1 mo	0.1776530	0.0700484	0.1200824
EARTH	2084-09-21 12:39	> 1 w	0.0056914	0.0006149	0.1590760
EARTH	2119-09-08 22:28	> 1 mo	0.1113522	0.0187300	63.3598477

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
30.44293395	257.75977148	0.00191609	MINIMUM
176.60869416	28.63881009	1.34653506	SADDLE
356.91049463	26.54217660	1.88637340	SADDLE
180.78220955	211.24827004	3.30324073	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2025SC5

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2086-09-21.535	83219.535	-0.336	0.63 ± 0.003	2.49E5	3.83E-6	9.83E0	-4.89
2086-09-21.557	83219.557	-1.511	0.42 ± 0.001	2.61E3	1.23E-4	9.78E0	-3.38
2092-09-21.061	85411.061	-4.602	0.65 ± 0.001	4.21E3	5.56E-9	9.64E0	-7.77
2107-09-22.775	90889.775	-0.300	0.34 ± 0.022	3.66E6	2.69E-7	9.81E0	-6.17


Based on 48 optical observations (of which 3 are rejected as outliers) from 2025/09/22.909 to 2025/09/25.173.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.33 and 1.33 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250925 145859.232 UTC.

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Download Impactor Table as: