Asteroids

2025CJ help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.865

Aphelion (Q)

1.118

Eccentricity (e)

0.128

Inclination (i)

4.1

deg

Orbit period (P)

360.4

Earth MOID

0.00287

U parameter

5.3

Next Earth close approach

Date

2026-02-04

Nominal distance (from Earth center)

0.08683

12989447

Maximum Brightness

26.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.2

mag

Diameter

6 - 13*

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.991167

1-sigma variation

0.000010

Unit

Eccentricity (e)

Value

0.127777

1-sigma variation

0.000024

Unit

Inclination (i)

Value

4.1446

1-sigma variation

0.0009

Unit

Long. of Ascending Node (Ω)

Value

315.7504

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

277.9821

1-sigma variation

0.0027

Unit

Mean Anomaly (M)

Value

6.10895

1-sigma variation

0.00387

Unit

Perihelion distance

Value

0.864518

1-sigma variation

Unit

Aphelion distance

Value

1.117816

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.055404

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.006197

1-sigma variation

Unit

MOID

Value

0.002869

1-sigma variation

Unit

Orbit Period

Value

360.4282

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.21779E-11	2.21241E-10	8.97089E-9	2.34744E-9	-2.57694E-8	3.70972E-8
e	2.21241E-10	5.63868E-10	2.24397E-8	5.88443E-9	-5.98300E-8	9.05652E-8
i	8.97089E-9	2.24397E-8	8.98441E-7	2.35378E-7	-2.45193E-6	3.65240E-6
Ω	2.34744E-9	5.88443E-9	2.35378E-7	6.17011E-8	-6.40855E-7	9.56330E-7
ω	-2.57694E-8	-5.98300E-8	-2.45193E-6	-6.40855E-7	7.32858E-6	-1.02772E-5
M	3.70972E-8	9.05652E-8	3.65240E-6	9.56330E-7	-1.02772E-5	1.50009E-5

Date of computation: 2025-07-29 02:36 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

28.245

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 - 13*

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

207

Unit

Source

[1]

Normalized RMS of residuals

Value

0.539678

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-02.414107

Unit

Source

[2]

Last Observation

Value

2025-02-05.161935

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

68 (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 2025CJ 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	2022-01-31 19:17	4.3	0.1823848	0.1820800	0.0001016
EARTH	2023-02-03 15:28	3.9	0.1140418	0.1138085	0.0000778
EARTH	2024-02-06 06:27	2.6	0.0510562	0.0509120	0.0000481
EARTH	2025-02-06 21:51	< 1 min	0.0040065	0.0040043	0.0000007
EARTH	2026-02-04 18:06	3.2	0.0868291	0.0865586	0.0000902
EARTH	2027-02-01 17:09	5.9	0.1777542	0.1772387	0.0001718
EARTH	2083-09-08 15:03	141.6	0.1999883	0.1899480	0.0033487
EARTH	2084-09-03 20:07	181.6	0.1141844	0.1045966	0.0032054
EARTH	2085-08-30 16:55	257.5	0.0394119	0.0333886	0.0022051
EARTH	2086-08-24 17:40	471.9	0.0466599	0.0413311	0.0018438
EARTH	2087-07-25 07:12	> 1 d	0.1070275	0.1043335	0.0009034
EARTH	2087-09-27 19:59	> 1 d	0.1160990	0.1132380	0.0009537
EARTH	2088-06-23 20:02	769.0	0.1433442	0.1429923	0.0001176
EARTH	2088-11-01 18:41	581.7	0.1454320	0.1450358	0.0001322
EARTH	2089-05-29 18:17	345.7	0.1592971	0.1589324	0.0001216
EARTH	2089-11-27 04:45	522.4	0.1482062	0.1478489	0.0001191
EARTH	2090-05-05 16:56	> 1 d	0.1586842	0.1586419	0.0000141
EARTH	2090-12-22 18:29	> 1 d	0.1292686	0.1272607	0.0006698
EARTH	2091-04-08 06:14	> 1 d	0.1396385	0.1377196	0.0006405
EARTH	2092-01-26 13:33	> 1 d	0.0818747	0.0750710	0.0022702
EARTH	2093-02-06 11:47	117.7	0.0103933	0.0034109	0.0030718
EARTH	2094-02-06 05:20	168.4	0.0083935	0.0035185	0.0105338
EARTH	2095-02-03 12:47	> 1 d	0.1093740	0.0042436	0.0549435

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
271.46282406	35.06361776	0.00286943	MINIMUM
93.28072898	232.78586513	0.02574064	MINIMUM
181.65641144	313.58343520	0.14929407	SADDLE
3.11106853	134.28228189	0.16098300	SADDLE
5.39423838	316.93751688	1.85185324	SADDLE
184.78636980	136.32872956	2.12771167	MAXIMUM

Download:

MOID Plots

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