Asteroids

2025EA4 help

Last update: 2025-03-13 23:54 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

2036-03-30

Nominal distance (from Earth center)

0.04892

7318722

Maximum Brightness

21.6

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

0.894231

1-sigma variation

0.000055

Unit

Eccentricity (e)

Value

0.133608

1-sigma variation

0.000080

Unit

Inclination (i)

Value

5.1730

1-sigma variation

0.0036

Unit

Long. of Ascending Node (Ω)

Value

166.6126

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

201.0227

1-sigma variation

0.0076

Unit

Mean Anomaly (M)

Value

223.00883

1-sigma variation

0.01185

Unit

Perihelion distance

Value

0.774754

1-sigma variation

Unit

Aphelion distance

Value

1.013707

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010697

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.225928

1-sigma variation

Unit

MOID

Value

0.009601

1-sigma variation

Unit

Orbit Period

Value

308.8680

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.07260E-9	-4.41199E-9	-1.86692E-7	-7.11381E-8	3.37572E-7	-5.40282E-7
e	-4.41199E-9	6.39640E-9	2.78989E-7	1.07554E-7	-4.49323E-7	7.23159E-7
i	-1.86692E-7	2.78989E-7	1.32989E-5	5.29192E-6	-1.42044E-5	2.34425E-5
Ω	-7.11381E-8	1.07554E-7	5.29192E-6	2.12856E-6	-4.69212E-6	7.85874E-6
ω	3.37572E-7	-4.49323E-7	-1.42044E-5	-4.69212E-6	5.76254E-5	-8.98828E-5
M	-5.40282E-7	7.23159E-7	2.34425E-5	7.85874E-6	-8.98828E-5	1.40379E-4

Date of computation: 2025-03-12 16:00 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

25.609

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.509193

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

2025-03-12.4234

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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	1962-12-19 23:35	> 1 mo	0.1666780	0.0399507	1.7975425
EARTH	1963-04-18 11:06	> 1 mo	0.0804734	0.0525552	2.3800172
EARTH	1974-03-04 10:46	> 1 w	0.0109134	0.0102130	0.0314421
EARTH	1979-11-15 16:07	> 1 mo	0.1987872	0.1728784	0.0139148
EARTH	1980-04-24 03:54	> 1 d	0.1630377	0.0666892	0.0520469
EARTH	1991-02-21 04:37	371.0	0.1926971	0.1604674	0.0107502
EARTH	1997-03-10 08:04	> 1 d	0.0161422	0.0111994	0.0099620
EARTH	2008-02-20 03:04	129.5	0.1534363	0.1267439	0.0089273
EARTH	2008-07-29 13:35	> 1 d	0.1955043	0.1902186	0.0019151
EARTH	2013-11-22 20:01	> 1 d	0.1936096	0.1889777	0.0015795
EARTH	2014-04-22 17:53	201.5	0.1399396	0.1245254	0.0052286
EARTH	2025-03-13 14:39	2.0	0.0223891	0.0223470	0.0000140
EARTH	2036-03-30 09:11	> 1 d	0.0489226	0.0396812	0.0034197
EARTH	2047-04-23 01:00	69.3	0.1774572	0.1631941	0.0047842
EARTH	2052-02-19 03:43	33.2	0.1361473	0.1254683	0.0035660
EARTH	2052-07-23 22:28	> 1 d	0.1952887	0.1927864	0.0008570
VENUS	2056-12-04 17:56	68.8	0.0487382	0.0487152	0.0000091
EARTH	2063-02-22 11:17	277.2	0.0457078	0.0391144	0.0022191
EARTH	2063-06-27 03:20	> 1 d	0.1640491	0.1605521	0.0011867
EARTH	2074-02-20 13:35	46.5	0.0749897	0.0744685	0.0001737
EARTH	2074-07-09 04:57	750.1	0.1745683	0.1740380	0.0001772
EARTH	2090-12-15 11:38	> 1 d	0.1714700	0.1690838	0.0007957
EARTH	2091-04-18 07:02	301.9	0.0878802	0.0850791	0.0009419
EARTH	2102-03-22 23:57	493.9	0.0380558	0.0363987	0.0005558
EARTH	2112-12-05 01:53	> 1 d	0.1853701	0.1837726	0.0005344
EARTH	2113-04-22 01:12	52.5	0.1137389	0.1095781	0.0014019

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
152.75031134	60.67195113	0.00960148	MINIMUM
355.03116789	260.85258167	0.22837836	SADDLE
351.69698733	77.03188571	1.77195761	SADDLE
172.84974183	258.18086886	2.01571044	MAXIMUM

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MOID Plots

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