Asteroids

2025XX4 help

Last update: 2025-12-17 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.980

Aphelion (Q)

1.962

Eccentricity (e)

0.334

Inclination (i)

1.8

deg

Orbit period (P)

651.8

Earth MOID

0.02758

U parameter

7.6

Next Earth close approach

Date

2042-01-20

Nominal distance (from Earth center)

0.03065

4584762

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-09

Observatory

Pan-STARRS 2, Haleakala

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

1.471166

1-sigma variation

0.000798

Unit

Eccentricity (e)

Value

0.333813

1-sigma variation

0.000361

Unit

Inclination (i)

Value

1.8317

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

43.0447

1-sigma variation

0.0031

Unit

Arg. of Perihelion (ω)

Value

74.3230

1-sigma variation

0.0016

Unit

Mean Anomaly (M)

Value

330.58631

1-sigma variation

0.02514

Unit

Perihelion distance

Value

0.980073

1-sigma variation

Unit

Aphelion distance

Value

1.962260

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.207999

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.426435

1-sigma variation

Unit

MOID

Value

0.027579

1-sigma variation

Unit

Orbit Period

Value

651.7651

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.36549E-7	2.87988E-7	1.49448E-6	2.33037E-6	-5.40168E-7	2.00596E-5
e	2.87988E-7	1.30293E-7	6.76106E-7	1.05352E-6	-2.43134E-7	9.07518E-6
i	1.49448E-6	6.76106E-7	3.50993E-6	5.50571E-6	-1.31831E-6	4.71023E-5
Ω	2.33037E-6	1.05352E-6	5.50571E-6	9.51667E-6	-3.42619E-6	7.36411E-5
ω	-5.40168E-7	-2.43134E-7	-1.31831E-6	-3.42619E-6	2.63975E-6	-1.73452E-5
M	2.00596E-5	9.07518E-6	4.71023E-5	7.36411E-5	-1.73452E-5	6.32190E-4

Date of computation: 2025-12-17 13:16 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

25.773

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

19 - 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

0.424176

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-09.54763

Unit

Source

[2]

Last Observation

Value

2025-12-17.325113

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (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 2025XX4 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	1959-12-30 05:43	> 1 mo	0.0272210	0.0267787	0.0566031
EARTH	1976-03-04 18:36	> 1 mo	0.1830911	0.0320490	0.6271361
EARTH	2001-01-27 23:22	> 1 mo	0.0313177	0.0311937	0.0028213
MARS	2013-03-26 02:59	> 1 d	0.0420485	0.0045361	0.0532336
EARTH	2025-12-20 21:56	< 1 min	0.0428070	0.0426753	0.0000439
EARTH	2042-01-20 04:19	> 1 mo	0.0306472	0.0221825	0.0041546
EARTH	2058-02-23 10:17	> 1 mo	0.0770804	0.0310946	0.2427757
EARTH	2082-12-13 09:58	> 1 mo	0.0900372	0.0257970	0.2728970
EARTH	2099-01-19 11:20	> 1 mo	0.0305913	0.0120769	0.0061819
EARTH	2115-03-01 23:15	> 1 w	0.1124131	0.0304665	0.1488489

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
348.67290654	0.07245667	0.02757898	MINIMUM
180.45763797	196.52232315	0.94580384	SADDLE
0.86933713	196.98242546	1.99727574	SADDLE
180.38391460	16.46495564	2.94617358	MAXIMUM

Download:

MOID Plots

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