Asteroids

2025SE3 help

Last update: 2025-10-02 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.888

Aphelion (Q)

1.390

Eccentricity (e)

0.221

Inclination (i)

18.2

deg

Orbit period (P)

444.0

Earth MOID

0.00408

U parameter

7.3

Next Earth close approach

Date

2032-03-29

Nominal distance (from Earth center)

0.17888

26760254

Maximum Brightness

22.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.3

mag

Diameter

60 - 130*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-18

Observatory

WFST, Lenghu

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

1.138964

1-sigma variation

0.000280

Unit

Eccentricity (e)

Value

0.220573

1-sigma variation

0.000175

Unit

Inclination (i)

Value

18.2265

1-sigma variation

0.0189

Unit

Long. of Ascending Node (Ω)

Value

179.3164

1-sigma variation

0.0032

Unit

Arg. of Perihelion (ω)

Value

294.6252

1-sigma variation

0.0249

Unit

Mean Anomaly (M)

Value

321.50514

1-sigma variation

0.02952

Unit

Perihelion distance

Value

0.887739

1-sigma variation

Unit

Aphelion distance

Value

1.390189

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.004621

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.189049

1-sigma variation

Unit

MOID

Value

0.004077

1-sigma variation

Unit

Orbit Period

Value

443.9800

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.83877E-8	4.88399E-8	5.28896E-6	8.87744E-7	-6.98205E-6	8.26279E-6
e	4.88399E-8	3.04936E-8	3.29518E-6	5.53088E-7	-4.34767E-6	5.15303E-6
i	5.28896E-6	3.29518E-6	3.56877E-4	5.99017E-5	-4.71068E-4	5.57462E-4
Ω	8.87744E-7	5.53088E-7	5.99017E-5	1.00546E-5	-7.90684E-5	9.35689E-5
ω	-6.98205E-6	-4.34767E-6	-4.71068E-4	-7.90684E-5	6.22044E-4	-7.35831E-4
M	8.26279E-6	5.15303E-6	5.57462E-4	9.35689E-5	-7.35831E-4	8.71403E-4

Date of computation: 2025-10-02 13:15 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

23.337

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

60 - 130*

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

0.511342

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-18.925035

Unit

Source

[2]

Last Observation

Value

2025-10-02.15376

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (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 2025SE3 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	1957-10-02 14:13	> 1 mo	0.1859924	0.1664089	222.9409226
EARTH	1958-03-08 19:32	> 1 mo	0.1804017	0.0213058	543.1815810
EARTH	1975-03-20 15:22	> 1 w	0.0020948	0.0020400	0.0864720
EARTH	1991-10-07 08:52	> 1 d	0.1479697	0.1477164	0.0064331
EARTH	1998-03-21 08:23	1294.5	0.0162404	0.0023559	0.0160156
EARTH	2008-10-09 07:06	371.8	0.1626268	0.1528940	0.0059330
EARTH	2015-03-24 03:17	> 1 d	0.0617111	0.0042065	0.0198581
EARTH	2025-10-07 05:16	< 1 min	0.1534089	0.1530687	0.0001134
EARTH	2032-03-30 04:44	674.9	0.1899367	0.1566696	0.0110960
EARTH	2042-09-30 19:08	> 1 d	0.1994267	0.1683758	0.0146691
EARTH	2043-03-09 20:54	> 1 d	0.1696880	0.0832174	0.0290276
EARTH	2060-03-17 16:42	> 1 d	0.0413085	0.0038184	0.0480775
EARTH	2077-03-17 03:19	> 1 d	0.0556128	0.0049124	0.0965009
EARTH	2094-03-09 17:42	> 1 d	0.1682091	0.0213738	0.0543406
EARTH	2110-10-07 23:02	406.7	0.1539905	0.1505316	0.0015328
EARTH	2117-03-27 10:20	> 1 d	0.1088271	0.0192050	0.0303095

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
54.61422922	77.36944233	0.00395787	MINIMUM
274.39908065	274.30820079	0.15171270	MINIMUM
341.13071835	349.39163838	0.30963507	SADDLE
165.70418162	181.87020436	0.51665404	SADDLE
356.24602149	188.70470847	1.88512962	SADDLE
185.63723116	18.62707180	2.35176869	MAXIMUM

Download:

MOID Plots

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