Asteroids

2025UR help

Last update: 2025-10-19 13:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.900

Aphelion (Q)

3.593

Eccentricity (e)

0.599

Inclination (i)

3.0

deg

Orbit period (P)

1229.5

Earth MOID

0.00094

U parameter

7.7

Next Earth close approach

Date

2025-10-21

Nominal distance (from Earth center)

0.00954

1426464

Maximum Brightness

17.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.246098

1-sigma variation

0.002353

Unit

Eccentricity (e)

Value

0.599487

1-sigma variation

0.000437

Unit

Inclination (i)

Value

3.0183

1-sigma variation

0.0015

Unit

Long. of Ascending Node (Ω)

Value

209.9463

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

220.9692

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

359.82161

1-sigma variation

0.00205

Unit

Perihelion distance

Value

0.899591

1-sigma variation

Unit

Aphelion distance

Value

3.592606

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.623920

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.004695

1-sigma variation

Unit

MOID

Value

0.000943

1-sigma variation

Unit

Orbit Period

Value

1229.5368

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.53785E-6	1.02819E-6	3.54801E-6	1.69511E-6	-3.04685E-6	4.79303E-6
e	1.02819E-6	1.90911E-7	6.59330E-7	3.13653E-7	-5.59301E-7	8.89021E-7
i	3.54801E-6	6.59330E-7	2.30728E-6	1.02543E-6	-1.63380E-6	3.02829E-6
Ω	1.69511E-6	3.13653E-7	1.02543E-6	6.27788E-7	-1.51026E-6	1.54444E-6
ω	-3.04685E-6	-5.59301E-7	-1.63380E-6	-1.51026E-6	5.06043E-6	-3.10040E-6
M	4.79303E-6	8.89021E-7	3.02829E-6	1.54444E-6	-3.10040E-6	4.21214E-6

Date of computation: 2025-10-19 13:53 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

26.242

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

15 - 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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.586382

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

2025-10-19.347061

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

64 (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 2025UR 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	1961-12-30 17:28	> 1 mo	0.0418641	0.0371741	428.0683827
EARTH	2008-10-22 10:37	> 1 w	0.0008653	0.0007014	0.0802262
EARTH	2025-10-21 00:18	< 1 min	0.0095353	0.0095159	0.0000065
EARTH	2062-11-08 08:42	> 1 mo	0.0674945	0.0077933	0.1775695
65 Cybele	2072-01-26 21:53	> 1 d	0.0085163	0.0029985	0.0681192
EARTH	2099-10-27 17:01	> 1 mo	0.0240757	0.0000183	0.2219576

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.28500753	288.61051172	0.00094261	MINIMUM
19.96073339	8.20287074	0.05095427	MINIMUM
0.50510717	331.10866429	0.09221207	SADDLE
359.27956086	148.71662176	1.91499358	SADDLE
179.85085516	149.35703985	2.57771776	SADDLE
179.79228652	329.33182731	4.57805578	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
2052-10-22.773	70832.773	1.964	0.39 ± 0.003	4.63E3	3.38E-5	3.35E-1	-4.78
2069-10-22.651	77041.651	2.012	0.79 ± 0.003	3.46E5	3.76E-7	3.38E-1	-6.93
2072-10-22.378	78137.378	-1.624	1.03 ± 0.003	5.75E3	3.53E-5	3.30E-1	-5.00
2072-10-22.378	78137.378	-0.340	1.10 ± 0.003	1.64E5	4.79E-6	3.33E-1	-5.86
2112-10-22.929	92746.929	-3.037	1.29 ± 0.007	7.18E3	1.53E-6	3.30E-1	-6.62
2112-10-22.955	92746.955	-3.134	0.10 ± 0.013	3.13E4	2.61E-7	3.30E-1	-7.39
2113-10-22.704	93111.704	3.557	0.36 ± 0.003	7.32E5	2.61E-9	3.52E-1	-9.37


Based on 64 optical observations (of which 0 are rejected as outliers) from 2025/10/18.202 to 2025/10/19.347.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.41 and 1.41 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251019 142410.417 UTC.

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