Asteroids

2025CK help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.918

Aphelion (Q)

1.210

Eccentricity (e)

0.137

Inclination (i)

5.8

deg

Orbit period (P)

400.7

Earth MOID

0.01332

U parameter

6.4

Next Earth close approach

Date

2036-02-01

Nominal distance (from Earth center)

0.16342

24447374

Maximum Brightness

27.1

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

2025-02-02

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

1.063768

1-sigma variation

0.000066

Unit

Eccentricity (e)

Value

0.137362

1-sigma variation

0.000096

Unit

Inclination (i)

Value

5.7927

1-sigma variation

0.0040

Unit

Long. of Ascending Node (Ω)

Value

133.0694

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

75.2525

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

201.79029

1-sigma variation

0.01601

Unit

Perihelion distance

Value

0.917647

1-sigma variation

Unit

Aphelion distance

Value

1.209890

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.022429

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.065973

1-sigma variation

Unit

MOID

Value

0.013316

1-sigma variation

Unit

Orbit Period

Value

400.7458

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.29814E-9	6.26685E-9	2.61416E-7	3.28302E-8	9.27859E-8	-1.04926E-6
e	6.26685E-9	9.13823E-9	3.81129E-7	4.78633E-8	1.35531E-7	-1.52998E-6
i	2.61416E-7	3.81129E-7	1.59077E-5	1.99800E-6	5.64124E-6	-6.38187E-5
Ω	3.28302E-8	4.78633E-8	1.99800E-6	2.50996E-7	7.08163E-7	-8.01466E-6
ω	9.27859E-8	1.35531E-7	5.64124E-6	7.08163E-7	2.07165E-6	-2.26868E-5
M	-1.04926E-6	-1.52998E-6	-6.38187E-5	-8.01466E-6	-2.26868E-5	2.56164E-4

Date of computation: 2025-09-10 00:30 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

28.13

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

[-]

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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

221

Unit

Source

[1]

Normalized RMS of residuals

Value

0.518237

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-02.285577

Unit

Source

[2]

Last Observation

Value

2025-02-07.287545

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

43 (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 2025CK 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	1957-07-26 12:21	> 1 mo	0.0924267	0.0441275	0.1501391
EARTH	1969-07-20 07:48	> 1 d	0.0580280	0.0377163	0.1326582
EARTH	1980-02-10 13:20	> 1 d	0.0258244	0.0130251	0.0416575
EARTH	1991-02-02 18:23	> 1 d	0.1307993	0.0103094	0.0547714
EARTH	1992-07-22 12:02	> 1 d	0.1533549	0.0376749	0.0490250
EARTH	2003-07-19 02:56	44.8	0.0401178	0.0386463	0.0025856
EARTH	2014-01-10 01:07	> 1 d	0.1546714	0.1411664	0.0045634
EARTH	2014-04-18 01:04	> 1 d	0.1290190	0.1257031	0.0011250
EARTH	2014-08-20 12:48	> 1 d	0.1545011	0.1426991	0.0040173
EARTH	2025-02-08 10:29	< 1 min	0.0139281	0.0139010	0.0000090
EARTH	2036-02-01 14:06	287.4	0.1634206	0.1443114	0.0063716
EARTH	2037-07-21 15:21	279.7	0.1189269	0.1008316	0.0060871
EARTH	2048-07-18 05:55	118.9	0.0461312	0.0376870	0.0040292
EARTH	2059-03-16 10:26	> 1 w	0.1103707	0.0783537	0.0110949
EARTH	2059-09-03 04:39	> 1 w	0.1819057	0.1597213	0.0077282
EARTH	2070-02-05 19:50	1020.9	0.0527390	0.0145069	0.0149403
EARTH	2082-07-23 00:51	> 1 d	0.0842486	0.0412914	0.0334090
EARTH	2093-02-04 01:30	> 1 d	0.0793026	0.0125506	0.0631126
EARTH	2094-07-24 16:46	> 1 d	0.1716968	0.0345955	0.0530892
EARTH	2105-03-14 11:16	> 1 w	0.1094625	0.0607634	0.0175314
EARTH	2105-09-06 10:59	> 1 w	0.1846872	0.1528745	0.0116460
EARTH	2117-07-19 20:25	1387.8	0.0353603	0.0352911	0.0057533

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
298.11286900	36.50085512	0.01367428	MINIMUM
79.23702528	193.56957298	0.03750226	MINIMUM
10.15896328	116.90104573	0.13059681	SADDLE
187.53137053	293.40871550	0.24166165	SADDLE
7.00736697	293.25417670	1.90975837	SADDLE
184.92284229	111.14417339	2.21250525	MAXIMUM

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MOID Plots

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