Asteroids

2025CA help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.813

Aphelion (Q)

2.264

Eccentricity (e)

0.472

Inclination (i)

11.3

deg

Orbit period (P)

697.1

Earth MOID

0.00735

U parameter

7.0

Next Earth close approach

Date

2026-09-23

Nominal distance (from Earth center)

0.16297

24379309

Maximum Brightness

24.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-01

Observatory

Catalina Sky 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

1.538602

1-sigma variation

0.000400

Unit

Eccentricity (e)

Value

0.471594

1-sigma variation

0.000161

Unit

Inclination (i)

Value

11.2613

1-sigma variation

0.0032

Unit

Long. of Ascending Node (Ω)

Value

132.4063

1-sigma variation

4.170E-5

Unit

Arg. of Perihelion (ω)

Value

294.4439

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

175.09822

1-sigma variation

0.07058

Unit

Perihelion distance

Value

0.813007

1-sigma variation

Unit

Aphelion distance

Value

2.264197

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.015047

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.471047

1-sigma variation

Unit

MOID

Value

0.007350

1-sigma variation

Unit

Orbit Period

Value

697.0882

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.59879E-7	6.42989E-8	1.27635E-6	-1.66520E-8	2.80584E-7	-2.82232E-5
e	6.42989E-8	2.58601E-8	5.13311E-7	-6.69603E-9	1.12624E-7	-1.13505E-5
i	1.27635E-6	5.13311E-7	1.01907E-5	-1.32936E-7	2.24025E-6	-2.25313E-4
Ω	-1.66520E-8	-6.69603E-9	-1.32936E-7	1.73893E-9	-2.94419E-8	2.93959E-6
ω	2.80584E-7	1.12624E-7	2.24025E-6	-2.94419E-8	5.44498E-7	-4.95405E-5
M	-2.82232E-5	-1.13505E-5	-2.25313E-4	2.93959E-6	-4.95405E-5	4.98220E-3

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

26.143

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

16 - 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

305

Unit

Source

[1]

Normalized RMS of residuals

Value

0.528677

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-01.294758

Unit

Source

[2]

Last Observation

Value

2025-02-05.85523

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

124 (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 2025CA 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	1966-02-09 00:18	1148.7	0.1481000	0.1041068	0.0146686
MARS	1988-07-18 19:10	> 1 d	0.0328370	0.0128592	0.0304830
EARTH	2006-01-24 13:52	> 1 d	0.0664596	0.0055623	0.0457669
EARTH	2007-09-15 02:35	> 1 d	0.1408804	0.1381109	0.0081735
EARTH	2025-01-30 19:22	< 1 min	0.0085111	0.0085033	0.0000026
EARTH	2026-09-23 06:34	543.1	0.1629656	0.1560434	0.0024577
EARTH	2046-01-26 17:32	> 1 d	0.0467701	0.0057273	0.0519646
EARTH	2047-09-18 15:12	> 1 d	0.1426381	0.1414555	0.0055113
EARTH	2086-02-08 16:00	> 1 w	0.1288807	0.0011366	0.1529559
EARTH	2107-01-26 21:20	> 1 w	0.0604631	0.0020949	0.1511197
EARTH	2108-09-17 20:09	> 1 d	0.1439029	0.1437073	0.0063590

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
40.79699737	28.74871820	0.00734973	MINIMUM
312.61431886	253.47830763	0.14070779	MINIMUM
352.48245211	314.13779816	0.24205058	SADDLE
178.31803104	144.68916553	1.27833750	SADDLE
357.81375332	143.02999694	1.82049840	SADDLE
180.01950833	325.73598240	3.23972259	MAXIMUM

Download:

MOID Plots

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