Asteroids

2025EM3 help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.917

Aphelion (Q)

2.280

Eccentricity (e)

0.426

Inclination (i)

9.1

deg

Orbit period (P)

737.9

Earth MOID

0.04216

U parameter

8.2

Next Earth close approach

Date

2027-03-30

Nominal distance (from Earth center)

0.12529

18743673

Maximum Brightness

25.8

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-05

Observatory

Kitt Peak-Bok

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

1.598056

1-sigma variation

0.002384

Unit

Eccentricity (e)

Value

0.426456

1-sigma variation

0.000930

Unit

Inclination (i)

Value

9.0511

1-sigma variation

0.0164

Unit

Long. of Ascending Node (Ω)

Value

154.1186

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

60.6194

1-sigma variation

0.0026

Unit

Mean Anomaly (M)

Value

9.65908

1-sigma variation

0.01497

Unit

Perihelion distance

Value

0.916555

1-sigma variation

Unit

Aphelion distance

Value

2.279557

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.091588

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.643215

1-sigma variation

Unit

MOID

Value

0.042159

1-sigma variation

Unit

Orbit Period

Value

737.8811

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.68125E-6	2.21667E-6	3.90038E-5	-2.09625E-6	6.28982E-6	-3.56848E-5
e	2.21667E-6	8.64886E-7	1.52182E-5	-8.17917E-7	2.45423E-6	-1.39233E-5
i	3.90038E-5	1.52182E-5	2.67783E-4	-1.43858E-5	4.31741E-5	-2.44988E-4
Ω	-2.09625E-6	-8.17917E-7	-1.43858E-5	7.78661E-7	-2.33016E-6	1.31679E-5
ω	6.28982E-6	2.45423E-6	4.31741E-5	-2.33016E-6	7.01203E-6	-3.95190E-5
M	-3.56848E-5	-1.39233E-5	-2.44988E-4	1.31679E-5	-3.95190E-5	2.24144E-4

Date of computation: 2025-03-09 14:30 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

26.363

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

14 - 30*

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

0.810304

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-27.264979

Unit

Source

[2]

Last Observation

Value

2025-03-09.359412

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (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 2025EM3 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	2023-02-27 04:46	> 1 d	0.1284899	0.0523313	0.0273856
EARTH	2025-03-08 19:27	< 1 min	0.0428568	0.0426143	0.0000808
EARTH	2027-03-30 23:21	> 1 d	0.1252937	0.0668879	0.0194927
EARTH	2029-05-13 15:25	> 1 w	0.1701727	0.1701598	0.0002297
EARTH	2031-06-20 05:38	> 1 w	0.1503941	0.1503467	0.0018119
EARTH	2033-06-30 19:40	> 1 d	0.1999992	0.1489999	0.0730842
EARTH	2114-03-04 01:43	> 1 mo	0.0844833	0.0425687	0.7728955
EARTH	2116-03-15 12:52	> 1 mo	0.0682579	0.0421620	0.5530528
EARTH	2118-04-18 17:37	> 1 mo	0.1561828	0.0619397	0.2602923
EARTH	2120-06-07 15:22	> 1 mo	0.1597734	0.1494371	0.1288112
EARTH	2122-06-28 01:18	> 1 w	0.1601158	0.1477304	0.1324560

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
329.00693052	64.27826120	0.04215927	MINIMUM
34.98264504	165.38830782	0.15050991	MINIMUM
11.23939998	129.20735417	0.17002888	SADDLE
181.74876992	293.69206407	1.30275198	SADDLE
2.57206545	295.35827023	1.90514708	SADDLE
180.41391109	112.84703976	3.27906425	MAXIMUM

Download:

MOID Plots

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