Asteroids

2025UR help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.900

Aphelion (Q)

3.591

Eccentricity (e)

0.599

Inclination (i)

3.0

deg

Orbit period (P)

1228.8

Earth MOID

0.00106

U parameter

6.9

Next Earth close approach

Date

2062-11-01

Nominal distance (from Earth center)

0.04727

7071828

Maximum Brightness

25.4

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

16 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-18

Observatory

Catalina Sky 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.245199

1-sigma variation

0.000792

Unit

Eccentricity (e)

Value

0.599343

1-sigma variation

0.000148

Unit

Inclination (i)

Value

3.0182

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

209.9395

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

220.9653

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

58.41863

1-sigma variation

0.03036

Unit

Perihelion distance

Value

0.899556

1-sigma variation

Unit

Aphelion distance

Value

3.590842

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.625800

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.005282

1-sigma variation

Unit

MOID

Value

0.001060

1-sigma variation

Unit

Orbit Period

Value

1228.7985

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.26756E-7	1.17003E-7	4.25619E-7	1.54017E-7	-6.64946E-8	-2.40336E-5
e	1.17003E-7	2.18421E-8	7.94550E-8	2.87517E-8	-1.24097E-8	-4.48659E-6
i	4.25619E-7	7.94550E-8	2.89086E-7	1.04556E-7	-4.49686E-8	-1.63208E-5
Ω	1.54017E-7	2.87517E-8	1.04556E-7	3.78757E-8	-1.64275E-8	-5.90591E-6
ω	-6.64946E-8	-1.24097E-8	-4.49686E-8	-1.64275E-8	8.85252E-9	2.54951E-6
M	-2.40336E-5	-4.48659E-6	-1.63208E-5	-5.90591E-6	2.54951E-6	9.21592E-4

Date of computation: 2026-03-17 23:26 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

26.155

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

16 - 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

[-]

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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

180

Unit

Source

[1]

Normalized RMS of residuals

Value

0.671557

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-18.202124

Unit

Source

[2]

Last Observation

Value

2025-10-21.636444

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

106 (3)

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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025UR from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1964-11-27 07:45	> 1 mo	0.0883034	0.0702272	0.5274192
EARTH	1992-01-27 17:21	> 1 mo	0.1811386	0.0527818	2.1773829
EARTH	2008-10-24 21:50	> 1 w	0.0132283	0.0008364	0.0446492
EARTH	2025-10-21 00:18	< 1 s	0.0095346	0.0095283	0.0000021
EARTH	2062-11-01 09:03	> 1 w	0.0472723	0.0028465	0.0743861
65 Cybele	2072-01-27 00:38	611.8	0.0070336	0.0030383	0.0222288
EARTH	2099-11-09 21:36	> 1 mo	0.0685211	0.0072706	0.2224515

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.28336823	288.61042422	0.00094255	MINIMUM
19.96222300	8.20341669	0.05095199	MINIMUM
0.50509858	331.10884226	0.09220892	SADDLE
359.27948074	148.71682298	1.91499649	SADDLE
179.85081799	149.35726660	2.57723967	SADDLE
179.79223919	329.33204748	4.57757776	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025UR

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2072-10-22.374	78137.374	-0.708	0.96 ± 0.000	5.84E4	1.09E-5	3.76E-1	-5.45
2072-10-22.379	78137.379	-4.518	1.03 ± 0.000	1.94E3	1.45E-8	3.73E-1	-8.33
2093-10-22.218	85807.218	-0.526	0.64 ± 0.003	2.33E6	3.68E-7	3.80E-1	-7.08


Based on 106 optical observations (of which 3 are rejected as outliers) from 2025/10/18.202 to 2025/10/21.636.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.40 and 1.40 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251108 124520.392 UTC.

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