Asteroids

2025UR12 help

Last update: 2025-11-03 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.946

Aphelion (Q)

1.424

Eccentricity (e)

0.202

Inclination (i)

8.3

deg

Orbit period (P)

471.2

Earth MOID

0.00974

U parameter

6.6

Next Earth close approach

Date

2034-12-22

Nominal distance (from Earth center)

0.132

19746476

Maximum Brightness

27.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.1

mag

Diameter

6 - 14*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-30

Observatory

Mt. Lemmon 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

1.185134

1-sigma variation

0.000106

Unit

Eccentricity (e)

Value

0.201741

1-sigma variation

0.000079

Unit

Inclination (i)

Value

8.2838

1-sigma variation

0.0029

Unit

Long. of Ascending Node (Ω)

Value

39.8185

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

49.3941

1-sigma variation

0.0029

Unit

Mean Anomaly (M)

Value

340.96669

1-sigma variation

0.00571

Unit

Perihelion distance

Value

0.946044

1-sigma variation

Unit

Aphelion distance

Value

1.424224

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.012619

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.299800

1-sigma variation

Unit

MOID

Value

0.009738

1-sigma variation

Unit

Orbit Period

Value

471.2481

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.12837E-8	8.36451E-9	3.11367E-7	1.65114E-8	-3.04773E-7	6.06020E-7
e	8.36451E-9	6.20157E-9	2.30848E-7	1.22433E-8	-2.25484E-7	4.48983E-7
i	3.11367E-7	2.30848E-7	8.59397E-6	4.55721E-7	-8.39470E-6	1.67139E-5
Ω	1.65114E-8	1.22433E-8	4.55721E-7	2.41884E-8	-4.44446E-7	8.85898E-7
ω	-3.04773E-7	-2.25484E-7	-8.39470E-6	-4.44446E-7	8.42284E-6	-1.64784E-5
M	6.06020E-7	4.48983E-7	1.67139E-5	8.85898E-7	-1.64784E-5	3.26110E-5

Date of computation: 2025-11-03 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

28.077

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

6 - 14*

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

0.499937

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-30.263556

Unit

Source

[2]

Last Observation

Value

2025-11-03.320212

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (1)

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 2025UR12 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	1960-11-09 23:21	> 1 mo	0.0378158	0.0060925	0.6863818
EARTH	1961-03-06 19:19	> 1 mo	0.1918833	0.1670528	0.3496392
EARTH	1974-02-13 08:51	> 1 w	0.1915445	0.1454213	0.3491314
EARTH	1990-11-04 05:16	> 1 d	0.0113659	0.0091862	0.0126485
EARTH	2013-02-05 16:18	> 1 d	0.1487964	0.1444491	0.0024964
EARTH	2025-11-04 01:23	< 1 min	0.0115179	0.0115053	0.0000042
EARTH	2034-12-22 19:26	> 1 d	0.1319970	0.1195429	0.0043783
EARTH	2065-11-01 02:47	> 1 d	0.0373176	0.0091330	0.0223366
EARTH	2074-11-04 11:01	> 1 w	0.0116394	0.0104572	0.0311174
EARTH	2098-02-21 10:55	> 1 mo	0.1557467	0.1401529	1.9105640
EARTH	2106-11-08 20:41	> 1 mo	0.0248379	0.0101927	4.6467418
EARTH	2107-03-22 13:25	> 1 mo	0.1973301	0.1623093	2.7374618
EARTH	2115-11-03 20:42	> 1 mo	0.0252325	0.0105095	18.2639040

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
320.99889683	301.75180258	0.00973761	MINIMUM
186.38445859	172.73918557	0.42878483	SADDLE
0.44295142	168.37248019	1.96085555	SADDLE
178.00027380	345.81142591	2.40481002	MAXIMUM

Download:

MOID Plots

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