Asteroids

2025EA4 help

Last update: 2025-03-14 12:42 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.775

Aphelion (Q)

1.014

Eccentricity (e)

0.134

Inclination (i)

5.2

deg

Orbit period (P)

308.9

Earth MOID

0.00960

U parameter

6.6

Next Earth close approach

Date

2036-03-28

Nominal distance (from Earth center)

0.04659

6969698

Maximum Brightness

21.4

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-10

Observatory

Mt. Lemmon 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.894270

1-sigma variation

0.000051

Unit

Eccentricity (e)

Value

0.133566

1-sigma variation

0.000077

Unit

Inclination (i)

Value

5.1730

1-sigma variation

0.0036

Unit

Long. of Ascending Node (Ω)

Value

166.6129

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

201.0341

1-sigma variation

0.0042

Unit

Mean Anomaly (M)

Value

222.99135

1-sigma variation

0.00691

Unit

Perihelion distance

Value

0.774826

1-sigma variation

Unit

Aphelion distance

Value

1.013713

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010696

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.225851

1-sigma variation

Unit

MOID

Value

0.009600

1-sigma variation

Unit

Orbit Period

Value

308.8881

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.63849E-9	-3.93345E-9	-1.85941E-7	-7.37908E-8	2.06306E-7	-3.39707E-7
e	-3.93345E-9	5.86891E-9	2.78123E-7	1.10509E-7	-3.04618E-7	5.01983E-7
i	-1.85941E-7	2.78123E-7	1.32783E-5	5.29552E-6	-1.39955E-5	2.31148E-5
Ω	-7.37908E-8	1.10509E-7	5.29552E-6	2.11606E-6	-5.47407E-6	9.05093E-6
ω	2.06306E-7	-3.04618E-7	-1.39955E-5	-5.47407E-6	1.78928E-5	-2.92211E-5
M	-3.39707E-7	5.01983E-7	2.31148E-5	9.05093E-6	-2.92211E-5	4.77555E-5

Date of computation: 2025-03-14 11:58 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

25.611

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

20 - 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

Unit

Source

[1]

Unobserved

Value

0.3

Unit

Source

[1]

Normalized RMS of residuals

Value

0.533564

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-10.425927

Unit

Source

[2]

Last Observation

Value

2025-03-14.28182

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

44 (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 2025EA4 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	1957-02-25 14:46	> 1 w	0.0324951	0.0142203	0.1025685
EARTH	1957-06-14 18:15	> 1 mo	0.1536186	0.1087784	0.0676330
EARTH	1963-04-24 00:37	806.1	0.1693514	0.0652138	0.0596891
EARTH	1974-02-21 09:02	> 1 d	0.0753448	0.0197988	0.0698071
EARTH	1974-07-09 10:25	> 1 mo	0.1721748	0.1486920	0.0244099
EARTH	1979-12-04 11:49	> 1 mo	0.1798943	0.1172241	0.0292747
EARTH	1980-04-20 00:24	> 1 d	0.1074894	0.0590956	0.0647292
EARTH	1997-03-14 07:01	> 1 d	0.0229573	0.0137271	0.0092913
EARTH	2008-02-20 01:16	91.9	0.1474648	0.1230307	0.0081717
EARTH	2008-07-28 05:54	> 1 d	0.1942128	0.1891215	0.0018296
EARTH	2013-11-21 17:44	> 1 d	0.1946780	0.1905202	0.0014173
EARTH	2014-04-22 21:42	164.3	0.1434702	0.1290315	0.0048862
EARTH	2025-03-13 14:36	< 1 min	0.0223885	0.0223465	0.0000140
EARTH	2036-03-28 21:36	> 1 d	0.0465896	0.0379771	0.0031602
EARTH	2047-04-22 23:39	75.0	0.1741811	0.1616885	0.0041876
EARTH	2052-02-19 03:22	33.6	0.1385618	0.1296333	0.0029805
EARTH	2052-07-24 10:59	> 1 d	0.1958830	0.1938168	0.0007040
VENUS	2056-12-04 17:27	29.1	0.0487305	0.0487106	0.0000067
EARTH	2063-02-22 15:08	359.0	0.0441400	0.0364404	0.0025999
EARTH	2063-06-26 06:15	> 1 d	0.1632340	0.1590770	0.0014151
EARTH	2074-02-20 12:30	195.8	0.0754569	0.0683714	0.0023703
EARTH	2074-07-09 07:02	> 1 d	0.1746625	0.1725602	0.0007151
EARTH	2090-12-16 01:58	> 1 d	0.1708073	0.1663927	0.0014726
EARTH	2091-04-18 00:36	571.0	0.0870405	0.0814306	0.0019124
EARTH	2102-03-22 20:43	270.4	0.0378597	0.0370417	0.0002759
EARTH	2112-12-04 14:23	> 1 d	0.1858451	0.1828128	0.0010159
EARTH	2113-04-22 02:37	149.4	0.1148804	0.1077864	0.0024034
EARTH	2118-02-21 17:08	100.8	0.1987290	0.1901527	0.0028594

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
152.73882177	60.67239083	0.00960013	MINIMUM
355.03486411	260.86856324	0.22830553	SADDLE
351.69501202	77.04156860	1.77203188	SADDLE
172.84702619	258.18979628	2.01571344	MAXIMUM

Download:

MOID Plots

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