Asteroids

2025UG12 help

Last update: 2025-11-04 13:15 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.975

Aphelion (Q)

1.663

Eccentricity (e)

0.261

Inclination (i)

8.6

deg

Orbit period (P)

553.3

Earth MOID

0.00682

U parameter

6.3

Next Earth close approach

Date

2028-11-16

Nominal distance (from Earth center)

0.18518

27702644

Maximum Brightness

26.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-10-31

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

1.319069

1-sigma variation

0.000088

Unit

Eccentricity (e)

Value

0.260694

1-sigma variation

0.000052

Unit

Inclination (i)

Value

8.6235

1-sigma variation

0.0013

Unit

Long. of Ascending Node (Ω)

Value

37.6957

1-sigma variation

2.157E-5

Unit

Arg. of Perihelion (ω)

Value

330.7520

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

30.42392

1-sigma variation

0.00312

Unit

Perihelion distance

Value

0.975195

1-sigma variation

Unit

Aphelion distance

Value

1.662943

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.008646

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.583173

1-sigma variation

Unit

MOID

Value

0.006823

1-sigma variation

Unit

Orbit Period

Value

553.3498

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.67083E-9	4.54379E-9	1.17251E-7	1.86794E-9	-4.62050E-8	-2.72750E-7
e	4.54379E-9	2.69174E-9	6.94440E-8	1.10738E-9	-2.75216E-8	-1.61482E-7
i	1.17251E-7	6.94440E-8	1.79350E-6	2.85573E-8	-7.01401E-7	-4.17158E-6
Ω	1.86794E-9	1.10738E-9	2.85573E-8	4.65431E-10	-1.18125E-8	-6.61266E-8
ω	-4.62050E-8	-2.75216E-8	-7.01401E-7	-1.18125E-8	3.72662E-7	1.59312E-6
M	-2.72750E-7	-1.61482E-7	-4.17158E-6	-6.61266E-8	1.59312E-6	9.72441E-6

Date of computation: 2025-11-04 13:15 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

27.55

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

8 - 18*

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

0.732079

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-31.258397

Unit

Source

[2]

Last Observation

Value

2025-11-03.253048

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (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

Close Approaches for 2025UG12 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	1963-09-01 18:56	> 1 d	0.1440119	0.1219369	0.0092997
EARTH	1966-10-18 16:14	443.7	0.0529073	0.0489746	0.0013113
EARTH	1969-11-05 04:44	> 1 d	0.0502234	0.0038742	0.0196780
EARTH	1972-11-16 20:55	> 1 d	0.1989593	0.1315668	0.0224868
MARS	1976-09-18 17:33	> 1 d	0.0385686	0.0170996	0.0109652
EARTH	2022-09-23 06:09	748.4	0.1121956	0.1086684	0.0011856
EARTH	2025-10-29 18:11	< 1 min	0.0068938	0.0068903	0.0000012
EARTH	2028-11-16 08:05	140.7	0.1851807	0.1794503	0.0019103
MARS	2038-10-14 20:22	> 1 d	0.0382789	0.0287054	0.0034367
EARTH	2069-09-06 14:20	> 1 d	0.1408661	0.1146266	0.0106396
EARTH	2072-10-28 22:36	> 1 d	0.0070469	0.0064061	0.0071373
EARTH	2075-11-09 12:47	> 1 mo	0.0861996	0.0012945	0.4601096
MARS	2100-11-29 17:03	> 1 mo	0.0346226	0.0156089	1.3813890

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
21.34304968	295.70031059	0.00682341	MINIMUM
174.54331638	82.66752848	0.67129282	SADDLE
355.14178531	82.11551248	1.97273193	SADDLE
178.59279945	265.75008678	2.66294476	MAXIMUM

Download:

MOID Plots

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