Asteroids

2025RU help

Last update: 2025-09-04 13:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.669

Aphelion (Q)

3.437

Eccentricity (e)

0.674

Inclination (i)

4.0

deg

Orbit period (P)

1074.6

Earth MOID

0.00510

U parameter

9.0

Next Earth close approach

Date

2025-09-11

Nominal distance (from Earth center)

0.02141

3202685

Maximum Brightness

19.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

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

2.053245

1-sigma variation

0.015493

Unit

Eccentricity (e)

Value

0.674121

1-sigma variation

0.002840

Unit

Inclination (i)

Value

4.0315

1-sigma variation

0.0186

Unit

Long. of Ascending Node (Ω)

Value

332.7973

1-sigma variation

0.0109

Unit

Arg. of Perihelion (ω)

Value

97.1330

1-sigma variation

0.0181

Unit

Mean Anomaly (M)

Value

7.85711

1-sigma variation

0.06039

Unit

Perihelion distance

Value

0.669110

1-sigma variation

Unit

Aphelion distance

Value

3.437381

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.210834

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.043913

1-sigma variation

Unit

MOID

Value

0.005099

1-sigma variation

Unit

Orbit Period

Value

1074.6319

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.40043E-4	4.39995E-5	2.88289E-4	1.68421E-4	-2.77546E-4	-9.35641E-4
e	4.39995E-5	8.06515E-6	5.28370E-5	3.08652E-5	-5.08492E-5	-1.71499E-4
i	2.88289E-4	5.28370E-5	3.46528E-4	2.02585E-4	-3.34532E-4	-1.12382E-3
Ω	1.68421E-4	3.08652E-5	2.02585E-4	1.18506E-4	-1.95991E-4	-6.56599E-4
ω	-2.77546E-4	-5.08492E-5	-3.34532E-4	-1.95991E-4	3.25918E-4	1.08233E-3
M	-9.35641E-4	-1.71499E-4	-1.12382E-3	-6.56599E-4	1.08233E-3	3.64700E-3

Date of computation: 2025-09-04 13:30 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

25.408

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

22 - 50*

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

0.476869

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-30.452461

Unit

Source

[2]

Last Observation

Value

2025-09-03.982253

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

14 (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 2025RU 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	1951-10-05 03:10	> 1 mo	0.1797106	0.0108323	1.4819575
EARTH	1954-09-14 22:03	> 1 mo	0.0184095	0.0176435	0.1458549
EARTH	1957-09-03 09:31	> 1 mo	0.1801558	0.0150860	0.7006394
VENUS	1969-09-12 16:33	> 1 mo	0.0423943	0.0239175	0.7287810
EARTH	2014-02-26 16:24	> 1 mo	0.1646606	0.0055396	0.7831660
EARTH	2017-02-03 06:01	> 1 mo	0.1455549	0.0032466	0.5766071
EARTH	2025-09-11 17:53	1.5	0.0214086	0.0211435	0.0000884
MARS	2063-10-18 07:30	> 1 mo	0.0400145	0.0305190	1.5867512
EARTH	2064-02-22 14:40	> 1 mo	0.0497044	0.0016379	2.8201210
EARTH	2072-09-14 09:29	> 1 mo	0.0536690	0.0208613	0.9585680
VENUS	2081-09-07 05:06	> 1 mo	0.0355131	0.0091495	3.5528614
EARTH	2111-02-08 05:01	> 1 mo	0.1463789	0.0041716	9.3297372
EARTH	2116-09-29 19:06	> 1 mo	0.1826754	0.0181837	9.3728826
VENUS	2119-11-01 01:31	> 1 mo	0.0287046	0.0089344	9.1661483

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.78298708	46.62128788	0.00509917	MINIMUM
318.96331311	248.89338335	0.02026368	MINIMUM
359.03707824	327.25085400	0.32209256	SADDLE
359.09297136	147.39797847	1.68362043	SADDLE
179.81640825	148.41132865	2.42531590	SADDLE
179.84517903	328.42859097	4.42155966	MAXIMUM

Download:

MOID Plots

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