Asteroids

2025RD2 help

Last update: 2025-09-14 22:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.935

Aphelion (Q)

1.480

Eccentricity (e)

0.225

Inclination (i)

6.1

deg

Orbit period (P)

484.6

Earth MOID

0.00507

U parameter

6.8

Next Earth close approach

Date

2025-09-16

Nominal distance (from Earth center)

0.00751

1122755

Maximum Brightness

17.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

11 - 24*

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

1.207483

1-sigma variation

0.000145

Unit

Eccentricity (e)

Value

0.225485

1-sigma variation

0.000104

Unit

Inclination (i)

Value

6.1284

1-sigma variation

0.0025

Unit

Long. of Ascending Node (Ω)

Value

351.5001

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

55.0620

1-sigma variation

0.0112

Unit

Mean Anomaly (M)

Value

14.47510

1-sigma variation

0.00565

Unit

Perihelion distance

Value

0.935214

1-sigma variation

Unit

Aphelion distance

Value

1.479752

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.008564

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.321311

1-sigma variation

Unit

MOID

Value

0.005069

1-sigma variation

Unit

Orbit Period

Value

484.6406

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.10439E-8	1.46091E-8	3.53740E-7	3.08959E-8	-9.05575E-7	4.41738E-7
e	1.46091E-8	1.08228E-8	2.57035E-7	2.28368E-8	-3.86790E-7	1.82589E-7
i	3.53740E-7	2.57035E-7	6.14371E-6	5.43034E-7	-1.11505E-5	5.33641E-6
Ω	3.08959E-8	2.28368E-8	5.43034E-7	4.82176E-8	-8.36390E-7	3.95559E-7
ω	-9.05575E-7	-3.86790E-7	-1.11505E-5	-8.36390E-7	1.24889E-4	-6.30824E-5
M	4.41738E-7	1.82589E-7	5.33641E-6	3.95559E-7	-6.30824E-5	3.18806E-5

Date of computation: 2025-09-14 22:45 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

26.976

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

11 - 24*

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

0.6

Unit

Source

[1]

Unobserved

Value

0.5

Unit

Source

[1]

Normalized RMS of residuals

Value

0.926411

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-09-14.331566

Unit

Source

[2]

Last Observation

Value

2025-09-14.91409

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

59 (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 2025RD2 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	1970-09-12 08:58	549.1	0.0339570	0.0224111	0.0038563
EARTH	1974-09-27 15:23	> 1 w	0.0464574	0.0022791	0.0286409
EARTH	1978-11-27 04:09	> 1 w	0.1070722	0.1066829	0.0016541
EARTH	1983-01-02 02:18	> 1 d	0.1447246	0.1064559	0.0236025
EARTH	2021-09-02 15:18	344.7	0.1495695	0.1365237	0.0043487
EARTH	2025-09-16 00:42	< 1 min	0.0075052	0.0074956	0.0000032
EARTH	2029-09-04 02:43	378.3	0.1309213	0.1175372	0.0044615
EARTH	2071-01-07 00:36	> 1 d	0.1492575	0.1031559	0.0242142
EARTH	2074-12-17 22:51	> 1 w	0.1058325	0.1042545	0.0044835
EARTH	2078-10-09 02:39	> 1 w	0.0730272	0.0183319	0.0235651
EARTH	2082-09-14 23:58	> 1 d	0.0164495	0.0060198	0.0220311
EARTH	2108-01-11 17:01	> 1 mo	0.1726378	0.1011314	0.9066767
EARTH	2111-10-25 04:45	> 1 mo	0.0929210	0.0509574	0.5792246
EARTH	2115-09-06 16:37	> 1 mo	0.1226367	0.0002509	1.0502129

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
316.84158451	253.28761283	0.00506862	MINIMUM
38.69640089	353.10811272	0.10383475	MINIMUM
16.35572776	326.25137118	0.10785220	SADDLE
180.47698436	124.92909327	0.48120875	SADDLE
356.79201863	121.97589301	1.94375951	SADDLE
177.01776662	302.16661831	2.46869768	MAXIMUM

Download:

MOID Plots

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