Asteroids

2025QX4 help

Last update: 2025-08-25 06:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.939

Aphelion (Q)

1.685

Eccentricity (e)

0.284

Inclination (i)

6.7

deg

Orbit period (P)

549.0

Earth MOID

0.00842

U parameter

7.0

Next Earth close approach

Date

2028-09-03

Nominal distance (from Earth center)

0.03646

5454698

Maximum Brightness

23.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

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

1.312141

1-sigma variation

0.000245

Unit

Eccentricity (e)

Value

0.284401

1-sigma variation

0.000153

Unit

Inclination (i)

Value

6.7131

1-sigma variation

0.0029

Unit

Long. of Ascending Node (Ω)

Value

156.3768

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

222.4694

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

30.88870

1-sigma variation

0.00575

Unit

Perihelion distance

Value

0.938967

1-sigma variation

Unit

Aphelion distance

Value

1.685315

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.535393

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.013664

1-sigma variation

Unit

MOID

Value

0.008424

1-sigma variation

Unit

Orbit Period

Value

548.9960

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.99213E-8	3.74857E-8	7.20104E-7	-1.56134E-8	-3.83545E-7	-1.39646E-6
e	3.74857E-8	2.34644E-8	4.50421E-7	-8.71398E-9	-2.35592E-7	-8.76151E-7
i	7.20104E-7	4.50421E-7	8.65528E-6	-1.93502E-7	-4.62753E-6	-1.67706E-5
Ω	-1.56134E-8	-8.71398E-9	-1.93502E-7	8.49292E-8	4.25926E-7	1.71874E-7
ω	-3.83545E-7	-2.35592E-7	-4.62753E-6	4.25926E-7	3.80756E-6	8.14654E-6
M	-1.39646E-6	-8.76151E-7	-1.67706E-5	1.71874E-7	8.14654E-6	3.30088E-5

Date of computation: 2025-08-25 06:45 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

25.809

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

18 - 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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.499657

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-23.351265

Unit

Source

[2]

Last Observation

Value

2025-08-25.164755

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (2)

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 2025QX4 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
MARS	2000-12-23 22:18	984.0	0.0391802	0.0372105	0.0034026
EARTH	2010-12-07 10:50	947.4	0.1790728	0.1525910	0.0094898
EARTH	2013-11-26 16:44	> 1 d	0.1216867	0.1148006	0.0034789
EARTH	2016-10-29 17:22	> 1 d	0.1088349	0.1072973	0.0009471
EARTH	2019-09-28 23:24	> 1 d	0.0862625	0.0766190	0.0033608
EARTH	2022-09-06 03:18	> 1 d	0.0421907	0.0303275	0.0040412
EARTH	2025-08-27 16:20	< 1 min	0.0093963	0.0093830	0.0000045
EARTH	2028-09-03 18:47	> 1 d	0.0364624	0.0245156	0.0040966
EARTH	2031-09-25 18:55	> 1 d	0.0814016	0.0724535	0.0030758
EARTH	2034-10-26 07:41	> 1 d	0.1069964	0.1044537	0.0010371
EARTH	2037-11-23 13:53	1278.1	0.1212194	0.1160923	0.0021048
EARTH	2040-12-04 13:00	629.5	0.1778105	0.1629539	0.0051305
MARS	2098-10-05 08:09	44.2	0.0482571	0.0473824	0.0002919
EARTH	2105-08-08 16:57	57.0	0.1909538	0.1895271	0.0004756
EARTH	2108-08-16 01:31	19.0	0.0930057	0.0929464	0.0000198
EARTH	2111-08-25 15:29	85.4	0.0172118	0.0159848	0.0004121
EARTH	2114-08-22 14:02	196.0	0.0371495	0.0341750	0.0009935
EARTH	2117-08-15 00:14	159.1	0.1081503	0.1043614	0.0012633
EARTH	2120-08-08 03:59	116.8	0.1980154	0.1941469	0.0012896

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
325.03965831	232.60042602	0.00842366	MINIMUM
179.97809354	96.74202898	0.69015886	SADDLE
357.11671672	94.54441470	1.94006761	SADDLE
177.54158026	274.92468178	2.68228511	MAXIMUM

Download:

MOID Plots

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