Asteroids

2025ER help

Last update: 2025-03-11 14:31 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.839

Aphelion (Q)

1.408

Eccentricity (e)

0.253

Inclination (i)

4.0

deg

Orbit period (P)

435.0

Earth MOID

0.02457

U parameter

7.4

Next Earth close approach

Date

2030-10-07

Nominal distance (from Earth center)

0.14433

21590736

Maximum Brightness

26.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

24.3

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-02

Observatory

Pan-STARRS 1, Haleakala

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

1.123513

1-sigma variation

0.000300

Unit

Eccentricity (e)

Value

0.253144

1-sigma variation

0.000484

Unit

Inclination (i)

Value

4.0179

1-sigma variation

0.0064

Unit

Long. of Ascending Node (Ω)

Value

284.3498

1-sigma variation

0.0152

Unit

Arg. of Perihelion (ω)

Value

127.4155

1-sigma variation

0.0146

Unit

Mean Anomaly (M)

Value

135.42810

1-sigma variation

0.06040

Unit

Perihelion distance

Value

0.839102

1-sigma variation

Unit

Aphelion distance

Value

1.407923

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.226013

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.072125

1-sigma variation

Unit

MOID

Value

0.024565

1-sigma variation

Unit

Orbit Period

Value

434.9761

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.99573E-8	1.44992E-7	1.90766E-6	-4.83237E-7	-3.91176E-6	-1.79445E-5
e	1.44992E-7	2.33974E-7	3.07938E-6	-9.91659E-7	-6.22606E-6	-2.88030E-5
i	1.90766E-6	3.07938E-6	4.05406E-5	-1.41275E-5	-8.15207E-5	-3.78297E-4
Ω	-4.83237E-7	-9.91659E-7	-1.41275E-5	2.31586E-4	-7.65951E-5	-2.81777E-5
ω	-3.91176E-6	-6.22606E-6	-8.15207E-5	-7.65951E-5	2.14108E-4	8.32081E-4
M	-1.79445E-5	-2.88030E-5	-3.78297E-4	-2.81777E-5	8.32081E-4	3.64836E-3

Date of computation: 2025-03-11 14:31 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

24.262

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 - 80*

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

0.517286

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-02.39964

Unit

Source

[2]

Last Observation

Value

2025-03-11.11508

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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 2025ER 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	1950-01-12 19:30	> 1 w	0.0732416	0.0290454	0.0505174
EARTH	1955-10-10 09:30	> 1 mo	0.1477728	0.0992748	0.0179282
EARTH	1961-08-13 13:50	> 1 d	0.1465765	0.0489672	0.0443688
EARTH	1969-02-04 03:32	> 1 d	0.1619981	0.0820682	0.0270253
EARTH	1974-12-15 23:22	> 1 d	0.1296911	0.1179868	0.0040021
EARTH	1980-08-31 15:05	> 1 d	0.0975520	0.0799010	0.0060850
EARTH	1994-01-31 14:58	> 1 d	0.0972816	0.0258224	0.0468244
EARTH	1999-12-05 15:23	> 1 w	0.1433475	0.1039499	0.0155290
EARTH	2005-08-31 15:01	> 1 w	0.0963871	0.0480563	0.0320159
EARTH	2011-08-11 15:43	> 1 d	0.1981579	0.1168871	0.0277252
EARTH	2019-02-04 10:03	1002.1	0.1575876	0.1123024	0.0151944
EARTH	2024-12-29 12:02	44.7	0.1062740	0.1056230	0.0002170
EARTH	2030-10-07 07:05	> 1 w	0.1443252	0.1273272	0.0057812
EARTH	2036-08-14 22:15	> 1 d	0.1243684	0.0563395	0.0268413
EARTH	2050-01-12 13:04	> 1 w	0.0748810	0.0305984	0.0370584
EARTH	2055-10-10 06:46	> 1 w	0.1471544	0.1130274	0.0121113
EARTH	2061-08-13 23:56	1409.6	0.1459071	0.0775794	0.0242936
EARTH	2069-02-04 14:31	454.2	0.1647959	0.1482365	0.0055269
EARTH	2074-12-17 20:10	> 1 d	0.1271582	0.1115921	0.0052934
EARTH	2080-09-04 22:42	> 1 d	0.1057500	0.0587719	0.0176595
EARTH	2094-02-01 09:06	> 1 d	0.1047399	0.0269019	0.0459898
EARTH	2099-12-06 23:46	> 1 w	0.1419511	0.1064454	0.0134408
EARTH	2105-09-01 08:05	> 1 d	0.0942421	0.0490895	0.0213908
EARTH	2119-02-05 06:53	103.9	0.1490765	0.1464592	0.0008725
EARTH	2124-12-26 10:19	> 1 w	0.1138399	0.0896481	0.0084657

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
59.08920473	21.70564037	0.02456541	MINIMUM
291.23941367	227.03551974	0.05055976	MINIMUM
353.28641374	301.84238831	0.16047563	SADDLE
176.67876144	126.49509335	0.40365773	SADDLE
356.23150263	125.63358479	1.84821029	SADDLE
178.22026705	307.70549257	2.39669567	MAXIMUM

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MOID Plots

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