Asteroids

2025RK help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.950

Aphelion (Q)

2.735

Eccentricity (e)

0.484

Inclination (i)

12.7

deg

Orbit period (P)

913.6

Earth MOID

0.02176

U parameter

7.0

Next Earth close approach

Date

2030-09-04

Nominal distance (from Earth center)

0.05219

7807038

Maximum Brightness

20.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.8

mag

Diameter

29 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-09-02

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

1.842643

1-sigma variation

0.000614

Unit

Eccentricity (e)

Value

0.484399

1-sigma variation

0.000178

Unit

Inclination (i)

Value

12.7219

1-sigma variation

0.0032

Unit

Long. of Ascending Node (Ω)

Value

161.4077

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

136.7819

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

44.53617

1-sigma variation

0.02332

Unit

Perihelion distance

Value

0.950069

1-sigma variation

Unit

Aphelion distance

Value

2.735217

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.187797

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.033064

1-sigma variation

Unit

MOID

Value

0.021765

1-sigma variation

Unit

Orbit Period

Value

913.6087

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.77092E-7	1.09496E-7	1.94639E-6	-7.62859E-8	3.03857E-7	-1.43180E-5
e	1.09496E-7	3.17942E-8	5.65173E-7	-2.21513E-8	8.82235E-8	-4.15751E-6
i	1.94639E-6	5.65173E-7	1.00467E-5	-3.93773E-7	1.56814E-6	-7.39037E-5
Ω	-7.62859E-8	-2.21513E-8	-3.93773E-7	1.54432E-8	-6.13974E-8	2.89652E-6
ω	3.03857E-7	8.82235E-8	1.56814E-6	-6.13974E-8	2.47748E-7	-1.15381E-5
M	-1.43180E-5	-4.15751E-6	-7.39037E-5	2.89652E-6	-1.15381E-5	5.43650E-4

Date of computation: 2025-11-24 16:53 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

24.836

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

29 - 60*

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

163

Unit

Source

[1]

Normalized RMS of residuals

Value

0.628775

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-30.201941

Unit

Source

[2]

Last Observation

Value

2025-09-29.20058

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

85 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025RK from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	2015-09-12 07:48	> 1 d	0.1470736	0.0820156	0.0217467
EARTH	2020-09-04 22:07	> 1 d	0.0605528	0.0233075	0.0142328
EARTH	2025-09-01 06:36	< 1 s	0.0264599	0.0264370	0.0000076
EARTH	2030-09-04 10:35	> 1 d	0.0521868	0.0213635	0.0138020
EARTH	2035-09-10 21:59	> 1 d	0.1283623	0.0671950	0.0205107

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
23.64712363	236.90923139	0.02176470	MINIMUM
178.40414335	16.54964243	1.76871512	SADDLE
358.22487021	14.84843071	1.92844149	SADDLE
180.48635256	197.76384371	3.74411379	MAXIMUM

Download:

MOID Plots

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