Asteroids

2025EN2 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.004

Aphelion (Q)

2.028

Eccentricity (e)

0.338

Inclination (i)

2.5

deg

Orbit period (P)

681.8

Earth MOID

0.00956

U parameter

7.7

Next Earth close approach

Date

2053-03-18

Nominal distance (from Earth center)

0.01174

1756469

Maximum Brightness

19.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.7

mag

Diameter

5 - 11*

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.516078

1-sigma variation

0.001009

Unit

Eccentricity (e)

Value

0.337935

1-sigma variation

0.000432

Unit

Inclination (i)

Value

2.4684

1-sigma variation

0.0024

Unit

Long. of Ascending Node (Ω)

Value

355.6594

1-sigma variation

0.0026

Unit

Arg. of Perihelion (ω)

Value

172.8215

1-sigma variation

0.0037

Unit

Mean Anomaly (M)

Value

135.74978

1-sigma variation

0.13642

Unit

Perihelion distance

Value

1.003742

1-sigma variation

Unit

Aphelion distance

Value

2.028415

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.015097

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.009825

1-sigma variation

Unit

MOID

Value

0.009557

1-sigma variation

Unit

Orbit Period

Value

681.8376

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.01814E-6	4.36223E-7	2.36400E-6	2.08237E-6	1.10485E-7	-1.37649E-4
e	4.36223E-7	1.86901E-7	1.01300E-6	8.91548E-7	4.89266E-8	-5.89763E-5
i	2.36400E-6	1.01300E-6	5.59950E-6	4.33254E-6	1.46383E-6	-3.19933E-4
Ω	2.08237E-6	8.91548E-7	4.33254E-6	6.55053E-6	-5.27933E-6	-2.80034E-4
ω	1.10485E-7	4.89266E-8	1.46383E-6	-5.27933E-6	1.34572E-5	-1.86317E-5
M	-1.37649E-4	-5.89763E-5	-3.19933E-4	-2.80034E-4	-1.86317E-5	1.86107E-2

Date of computation: 2025-09-10 00:30 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

28.733

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

5 - 11*

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

227

Unit

Source

[1]

Normalized RMS of residuals

Value

0.304563

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-05.295744

Unit

Source

[2]

Last Observation

Value

2025-03-06.984286

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (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 2025EN2 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	1963-03-03 13:09	> 1 mo	0.0166561	0.0016835	1.3173197
EARTH	1978-04-19 19:48	> 1 mo	0.1554823	0.0124764	4.4540895
EARTH	2010-03-10 21:17	> 1 mo	0.0109068	0.0087347	0.0174314
EARTH	2025-03-08 08:12	< 1 min	0.0130104	0.0129646	0.0000153
EARTH	2053-03-18 18:06	> 1 mo	0.0117413	0.0084832	0.0409246
EARTH	2068-03-16 09:54	> 1 mo	0.0109592	0.0101270	0.4640611
EARTH	2083-04-23 18:56	> 1 mo	0.1613467	0.0167616	135.9090052
EARTH	2115-02-25 10:05	> 1 mo	0.0355336	0.0040616	129.2467509

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
3.53429750	70.39402835	0.01040214	MINIMUM
181.16098209	247.49315855	1.02228836	SADDLE
2.42312532	248.81536866	2.00988894	SADDLE
181.18955870	67.50796298	3.02198082	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out