Asteroids

2025XC4 help

Last update: 2025-12-20 13:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.934

Aphelion (Q)

2.712

Eccentricity (e)

0.488

Inclination (i)

3.0

deg

Orbit period (P)

898.7

Earth MOID

0.02373

U parameter

8.0

Next Earth close approach

Date

2052-12-16

Nominal distance (from Earth center)

0.06824

10208148

Maximum Brightness

22.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-13

Observatory

GINOP-KHK, Piszkesteto

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

1.822583

1-sigma variation

0.002149

Unit

Eccentricity (e)

Value

0.487739

1-sigma variation

0.000628

Unit

Inclination (i)

Value

3.0186

1-sigma variation

0.0033

Unit

Long. of Ascending Node (Ω)

Value

67.6552

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

60.3479

1-sigma variation

0.0022

Unit

Mean Anomaly (M)

Value

336.16675

1-sigma variation

0.04452

Unit

Perihelion distance

Value

0.933638

1-sigma variation

Unit

Aphelion distance

Value

2.711528

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.133020

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.814578

1-sigma variation

Unit

MOID

Value

0.023729

1-sigma variation

Unit

Orbit Period

Value

898.7303

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.61658E-6	1.34881E-6	7.19298E-6	1.78820E-6	4.70946E-6	9.56637E-5
e	1.34881E-6	3.94078E-7	2.10153E-6	5.22343E-7	1.37625E-6	2.79497E-5
i	7.19298E-6	2.10153E-6	1.12083E-5	2.79322E-6	7.32346E-6	1.49053E-4
Ω	1.78820E-6	5.22343E-7	2.79322E-6	7.39127E-7	1.72678E-6	3.70683E-5
ω	4.70946E-6	1.37625E-6	7.32346E-6	1.72678E-6	5.04136E-6	9.75513E-5
M	9.56637E-5	2.79497E-5	1.49053E-4	3.70683E-5	9.75513E-5	1.98233E-3

Date of computation: 2025-12-20 13:00 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

25.984

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

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

[-]

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.496538

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-13.05678

Unit

Source

[2]

Last Observation

Value

2025-12-20.477142

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

50 (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 2025XC4 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1962-03-17 15:49	> 1 w	0.1094894	0.0529446	0.1532366
EARTH	1966-12-09 12:30	> 1 w	0.1328919	0.0186310	0.2436704
EARTH	1994-02-05 11:04	> 1 mo	0.0691402	0.0660060	0.0200605
EARTH	2025-12-20 20:22	< 1 min	0.0372572	0.0371270	0.0000434
EARTH	2052-12-16 03:32	> 1 w	0.0682373	0.0223286	0.2542967
EARTH	2075-03-03 17:08	> 1 mo	0.0517035	0.0514319	0.0258515
MARS	2077-04-11 22:05	> 1 w	0.0445760	0.0280835	0.3402906
EARTH	2102-01-07 15:25	> 1 mo	0.0435515	0.0231761	1.0376494

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
339.65972354	352.79259513	0.02372892	MINIMUM
20.91141636	60.75119327	0.05206099	MINIMUM
3.12731049	31.44527650	0.06885639	SADDLE
180.37483536	207.04944866	1.69696729	SADDLE
0.96266966	207.79830289	1.94933683	SADDLE
180.26002456	26.97649372	3.69614506	MAXIMUM

Download:

MOID Plots

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