Asteroids

2025UL2 help

Last update: 2025-10-29 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.844

Aphelion (Q)

3.201

Eccentricity (e)

0.583

Inclination (i)

2.8

deg

Orbit period (P)

1050.8

Earth MOID

0.00148

U parameter

7.9

Next Earth close approach

Date

2025-10-29

Nominal distance (from Earth center)

0.01003

1500612

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-19

Observatory

Pan-STARRS 2, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.022778

1-sigma variation

0.002270

Unit

Eccentricity (e)

Value

0.582595

1-sigma variation

0.000515

Unit

Inclination (i)

Value

2.7674

1-sigma variation

0.0021

Unit

Long. of Ascending Node (Ω)

Value

33.4169

1-sigma variation

0.0006

Unit

Arg. of Perihelion (ω)

Value

55.4498

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

354.88215

1-sigma variation

0.01134

Unit

Perihelion distance

Value

0.844317

1-sigma variation

Unit

Aphelion distance

Value

3.201239

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010543

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.987374

1-sigma variation

Unit

MOID

Value

0.001477

1-sigma variation

Unit

Orbit Period

Value

1050.8014

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.15263E-6	1.16857E-6	4.66258E-6	-1.42782E-6	5.05233E-6	2.57450E-5
e	1.16857E-6	2.65023E-7	1.05744E-6	-3.23819E-7	1.14584E-6	5.83874E-6
i	4.66258E-6	1.05744E-6	4.21925E-6	-1.29210E-6	4.57221E-6	2.32964E-5
Ω	-1.42782E-6	-3.23819E-7	-1.29210E-6	3.95863E-7	-1.40057E-6	-7.13401E-6
ω	5.05233E-6	1.14584E-6	4.57221E-6	-1.40057E-6	4.95864E-6	2.52431E-5
M	2.57450E-5	5.83874E-6	2.32964E-5	-7.13401E-6	2.52431E-5	1.28634E-4

Date of computation: 2025-10-29 13:00 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

25.999

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

17 - 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

0.8

Unit

Source

[1]

Normalized RMS of residuals

Value

0.602137

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-19.3459

Unit

Source

[2]

Last Observation

Value

2025-10-29.068461

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

40 (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 2025UL2 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	1966-01-29 02:43	> 1 mo	0.0855099	0.0477929	1.8378227
EARTH	1985-12-04 10:56	> 1 mo	0.1276003	0.0333235	0.5056585
EARTH	2005-11-02 16:51	> 1 w	0.0302271	0.0016391	0.1801109
EARTH	2025-10-29 21:27	< 1 s	0.0100310	0.0100060	0.0000083
EARTH	2048-11-18 12:29	> 1 mo	0.1006975	0.0063090	0.1381585
EARTH	2072-02-12 19:59	> 1 w	0.0511912	0.0450022	0.0981359
EARTH	2074-10-16 10:53	> 1 w	0.1720727	0.0009725	0.2579427
EARTH	2098-02-07 22:46	> 1 mo	0.0475112	0.0441600	0.2003644
EARTH	2123-11-08 16:03	> 1 mo	0.0518181	0.0041727	3.0077347

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
330.82436148	294.71447517	0.00147745	MINIMUM
28.64209432	39.80578514	0.04533802	MINIMUM
0.28370851	348.31846551	0.14427710	SADDLE
359.67776953	167.16973185	1.86169371	SADDLE
179.94511715	167.43506674	2.18467223	SADDLE
179.88681611	347.40725027	4.18459193	MAXIMUM

Download:

MOID Plots

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