Asteroids

2025CJ1 help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.973

Aphelion (Q)

1.658

Eccentricity (e)

0.261

Inclination (i)

7.7

deg

Orbit period (P)

551.0

Earth MOID

0.00830

U parameter

6.7

Next Earth close approach

Date

2028-02-17

Nominal distance (from Earth center)

0.1048

15677331

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.2

mag

Diameter

6 - 14*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-04

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

1.315349

1-sigma variation

0.000160

Unit

Eccentricity (e)

Value

0.260587

1-sigma variation

0.000092

Unit

Inclination (i)

Value

7.7390

1-sigma variation

0.0023

Unit

Long. of Ascending Node (Ω)

Value

315.1459

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

152.3971

1-sigma variation

0.0008

Unit

Mean Anomaly (M)

Value

74.71509

1-sigma variation

0.01429

Unit

Perihelion distance

Value

0.972586

1-sigma variation

Unit

Aphelion distance

Value

1.658112

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.580442

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.009882

1-sigma variation

Unit

MOID

Value

0.008300

1-sigma variation

Unit

Orbit Period

Value

551.0105

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.55053E-8	1.47296E-8	3.71469E-7	1.32270E-8	1.70786E-8	-2.28178E-6
e	1.47296E-8	8.50797E-9	2.14451E-7	7.64348E-9	8.96988E-9	-1.31729E-6
i	3.71469E-7	2.14451E-7	5.41631E-6	1.92525E-7	2.95665E-7	-3.32575E-5
Ω	1.32270E-8	7.64348E-9	1.92525E-7	6.89968E-9	5.85805E-9	-1.18176E-6
ω	1.70786E-8	8.96988E-9	2.95665E-7	5.85805E-9	5.75824E-7	-1.82612E-6
M	-2.28178E-6	-1.31729E-6	-3.32575E-5	-1.18176E-6	-1.82612E-6	2.04293E-4

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

28.198

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

[-]

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

207

Unit

Source

[1]

Normalized RMS of residuals

Value

0.776486

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-04.29708

Unit

Source

[2]

Last Observation

Value

2025-02-06.284171

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

52 (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 2025CJ1 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	1951-02-02 04:43	> 1 d	0.0097448	0.0093851	0.0082144
EARTH	1954-02-07 02:23	> 1 d	0.0291684	0.0077078	0.0234973
EARTH	1957-02-18 18:45	> 1 d	0.1365580	0.0443408	0.0308227
EARTH	2018-12-10 13:35	1222.3	0.1455731	0.1327339	0.0044351
EARTH	2022-01-13 13:01	1356.6	0.0687100	0.0607320	0.0026725
EARTH	2025-02-02 06:33	< 1 min	0.0084729	0.0084646	0.0000028
EARTH	2028-02-17 02:04	418.0	0.1047965	0.0945591	0.0034127
EARTH	2086-12-02 19:43	> 1 d	0.1895159	0.1143092	0.0318862
EARTH	2089-12-31 11:24	> 1 w	0.0995295	0.0512472	0.0261778
EARTH	2093-01-29 10:23	> 1 d	0.0193881	0.0064839	0.0245691
EARTH	2096-02-01 13:25	> 1 w	0.0102082	0.0074550	0.0420588
EARTH	2099-01-03 19:30	> 1 mo	0.0954804	0.0423815	0.2489505
EARTH	2101-12-03 22:21	> 1 mo	0.1925478	0.1080149	0.4475982

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
19.85369737	30.59225204	0.00829950	MINIMUM
177.51983468	183.66903476	0.64728492	SADDLE
359.47462821	184.75850567	1.98783487	SADDLE
180.80261115	6.19351869	2.64065636	MAXIMUM

Download:

MOID Plots

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