Asteroids

2025CJ3 help

Last update: 2025-03-13 15:55 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.972

Aphelion (Q)

2.337

Eccentricity (e)

0.412

Inclination (i)

9.8

deg

Orbit period (P)

777.6

Earth MOID

0.00208

U parameter

7.6

Next Earth close approach

Date

2042-03-23

Nominal distance (from Earth center)

0.12535

18752257

Maximum Brightness

24.7

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-07

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

1.654916

1-sigma variation

0.001026

Unit

Eccentricity (e)

Value

0.412378

1-sigma variation

0.000371

Unit

Inclination (i)

Value

9.8009

1-sigma variation

0.0063

Unit

Long. of Ascending Node (Ω)

Value

324.5444

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

197.2487

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

31.24954

1-sigma variation

0.02846

Unit

Perihelion distance

Value

0.972465

1-sigma variation

Unit

Aphelion distance

Value

2.337368

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.254086

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.002404

1-sigma variation

Unit

MOID

Value

0.002080

1-sigma variation

Unit

Orbit Period

Value

777.6111

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.05189E-6	3.80135E-7	6.47871E-6	9.20925E-7	8.67795E-7	-2.91906E-5
e	3.80135E-7	1.37374E-7	2.34130E-6	3.32805E-7	3.13625E-7	-1.05490E-5
i	6.47871E-6	2.34130E-6	3.99073E-5	5.67155E-6	5.35263E-6	-1.79791E-4
Ω	9.20925E-7	3.32805E-7	5.67155E-6	8.06401E-7	7.58998E-7	-2.55560E-5
ω	8.67795E-7	3.13625E-7	5.35263E-6	7.58998E-7	7.36062E-7	-2.40889E-5
M	-2.91906E-5	-1.05490E-5	-1.79791E-4	-2.55560E-5	-2.40889E-5	8.10060E-4

Date of computation: 2025-02-19 15:19 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

25.954

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

17 - 40*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.463333

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-07.435815

Unit

Source

[2]

Last Observation

Value

2025-02-11.492188

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

39 (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 2025CJ3 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	1959-01-24 21:04	> 1 mo	0.1429681	0.0243532	1001.8621068
EARTH	1991-02-12 00:51	> 1 mo	0.0079260	0.0027263	4.8930241
EARTH	2010-02-13 22:45	> 1 w	0.0044221	0.0029274	0.0550713
EARTH	2025-02-10 00:11	< 1 min	0.0156395	0.0156037	0.0000119
EARTH	2042-03-23 20:07	> 1 w	0.1253511	0.0767960	0.0639924
EARTH	2074-01-30 06:26	> 1 w	0.0922779	0.0137015	0.1815570
EARTH	2091-02-25 01:21	> 1 w	0.0457874	0.0102409	0.0288653
EARTH	2123-02-03 00:33	> 1 w	0.0732961	0.0091975	0.2124408

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
348.60305512	41.35174890	0.00207967	MINIMUM
181.59411511	240.68610809	1.33171066	SADDLE
2.50466607	242.29577330	1.97953890	SADDLE
180.43556997	59.93933104	3.32808620	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025CJ3

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2119-02-14.734	95052.734	2.579	0.000	1.56 ± 0.000	6.51E3	2.44E-6	9.38E-7	-6.40	0


Based on 39 optical observations (of which 1 are rejected as outliers) from 2025/02/07.436 to 2025/02/11.492.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.66 and 1.66 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250305 084050.657 UTC.

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Download Impactor Table as: