Asteroids

2025XQ help

Last update: 2025-12-15 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.939

Aphelion (Q)

2.072

Eccentricity (e)

0.376

Inclination (i)

4.1

deg

Orbit period (P)

674.7

Earth MOID

0.00074

U parameter

6.6

Next Earth close approach

Date

2027-09-19

Nominal distance (from Earth center)

0.10793

16145891

Maximum Brightness

26.9

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

4 - 9*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-08

Observatory

Palomar Mountain--ZTF

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

1.505433

1-sigma variation

0.000205

Unit

Eccentricity (e)

Value

0.376113

1-sigma variation

0.000088

Unit

Inclination (i)

Value

4.1404

1-sigma variation

0.0008

Unit

Long. of Ascending Node (Ω)

Value

75.2586

1-sigma variation

4.903E-5

Unit

Arg. of Perihelion (ω)

Value

325.2790

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

6.28268

1-sigma variation

0.00239

Unit

Perihelion distance

Value

0.939220

1-sigma variation

Unit

Aphelion distance

Value

2.071646

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.001894

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.854921

1-sigma variation

Unit

MOID

Value

0.000741

1-sigma variation

Unit

Orbit Period

Value

674.6686

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.20761E-8	1.80076E-8	1.67150E-7	-1.00489E-8	2.81893E-7	-4.90353E-7
e	1.80076E-8	7.70682E-9	7.15362E-8	-4.30075E-9	1.20640E-7	-2.09858E-7
i	1.67150E-7	7.15362E-8	6.64022E-7	-3.99206E-8	1.11982E-6	-1.94795E-6
Ω	-1.00489E-8	-4.30075E-9	-3.99206E-8	2.40356E-9	-6.72925E-8	1.17096E-7
ω	2.81893E-7	1.20640E-7	1.11982E-6	-6.72925E-8	1.89011E-6	-3.28577E-6
M	-4.90353E-7	-2.09858E-7	-1.94795E-6	1.17096E-7	-3.28577E-6	5.71479E-6

Date of computation: 2025-12-15 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

29.03

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

4 - 9*

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

0.687721

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-07.210256

Unit

Source

[2]

Last Observation

Value

2025-12-14.46168

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

49 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025XQ 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	1950-09-08 02:18	> 1 mo	0.1192383	0.0731126	253.9750466
EARTH	1959-12-09 09:02	> 1 mo	0.0124059	0.0015684	9.7108799
EARTH	1970-09-27 00:16	> 1 mo	0.0700620	0.0700560	0.0506632
MARS	1999-09-22 07:31	> 1 d	0.0254305	0.0249159	0.0568715
EARTH	2001-12-08 13:31	> 1 d	0.0091101	0.0008755	0.0248122
EARTH	2025-12-07 02:48	< 1 s	0.0014117	0.0014109	0.0000003
EARTH	2027-09-19 20:39	356.9	0.1079286	0.1030801	0.0016482
EARTH	2064-12-21 01:04	> 1 d	0.0996204	0.0054226	0.0406523
EARTH	2066-10-10 23:23	> 1 w	0.0666619	0.0665765	0.0012080
EARTH	2105-12-08 06:10	> 1 d	0.0009293	0.0005761	0.0056314
EARTH	2125-11-20 07:03	> 1 mo	0.0510931	0.0128082	8.6302077

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
23.35564720	333.80372943	0.00074075	MINIMUM
336.10863885	265.39898074	0.06890543	MINIMUM
349.47845379	284.74267473	0.07206243	SADDLE
178.62213018	117.95221045	1.06430921	SADDLE
357.46950927	116.50409424	1.94761243	SADDLE
179.08329315	298.27067068	3.06347549	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2025XQ

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2066-12-07.409	75991.409	4.421	0.55 ± 0.000	8.28E1	9.42E-7	5.02E-3	-7.96
2081-12-07.075	81470.075	-2.748	0.49 ± 0.001	1.90E5	1.68E-7	5.00E-3	-8.84
2087-12-07.564	83661.564	4.457	0.60 ± 0.000	1.87E6	3.53E-11	5.03E-3	-12.56


Based on 49 optical observations (of which 1 are rejected as outliers) from 2025/12/07.210 to 2025/12/14.462.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.80 and 1.80 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251215 140448.646 UTC.

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