Asteroids

2025QX9 help

Last update: 2025-08-29 06:00 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.916

Aphelion (Q)

1.184

Eccentricity (e)

0.128

Inclination (i)

3.6

deg

Orbit period (P)

392.9

Earth MOID

0.00692

U parameter

7.0

Next Earth close approach

Date

2025-09-12

Nominal distance (from Earth center)

0.04534

6782244

Maximum Brightness

22.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 28*

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

1.049757

1-sigma variation

0.000137

Unit

Eccentricity (e)

Value

0.127762

1-sigma variation

0.000262

Unit

Inclination (i)

Value

3.6286

1-sigma variation

0.0147

Unit

Long. of Ascending Node (Ω)

Value

137.3151

1-sigma variation

0.0237

Unit

Arg. of Perihelion (ω)

Value

298.0924

1-sigma variation

0.0193

Unit

Mean Anomaly (M)

Value

351.10258

1-sigma variation

0.03739

Unit

Perihelion distance

Value

0.915638

1-sigma variation

Unit

Aphelion distance

Value

1.183876

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.012772

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.084032

1-sigma variation

Unit

MOID

Value

0.006923

1-sigma variation

Unit

Orbit Period

Value

392.8543

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.87981E-8	3.53024E-8	1.40212E-6	1.26299E-6	-1.34518E-6	1.91608E-6
e	3.53024E-8	6.86415E-8	3.14229E-6	3.41584E-6	-1.72668E-6	1.93699E-6
i	1.40212E-6	3.14229E-6	2.17409E-4	3.26070E-4	7.53740E-5	-2.25453E-4
Ω	1.26299E-6	3.41584E-6	3.26070E-4	5.61557E-4	2.70180E-4	-6.28212E-4
ω	-1.34518E-6	-1.72668E-6	7.53740E-5	2.70180E-4	3.71294E-4	-7.10925E-4
M	1.91608E-6	1.93699E-6	-2.25453E-4	-6.28212E-4	-7.10925E-4	1.39818E-3

Date of computation: 2025-08-29 06:00 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

26.625

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

13 - 28*

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

0.56873

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-27.38563

Unit

Source

[2]

Last Observation

Value

2025-08-29.21103

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

11 (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 2025QX9 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	1957-07-19 08:50	> 1 w	0.1583618	0.0613079	0.0978112
EARTH	1958-02-08 22:55	> 1 mo	0.0219693	0.0070837	0.3591706
EARTH	1970-09-16 18:54	> 1 d	0.0470858	0.0409712	0.0158145
EARTH	1971-05-02 21:35	> 1 w	0.1704895	0.1460456	0.0082403
EARTH	1983-09-12 02:36	> 1 d	0.1640620	0.0393384	0.2063810
EARTH	1984-06-15 16:10	> 1 mo	0.1818310	0.1631406	0.0233980
EARTH	1985-02-20 22:09	> 1 w	0.0915259	0.0094569	0.2298682
EARTH	1997-07-13 18:25	> 1 d	0.1595530	0.1464530	0.0043690
EARTH	1998-02-08 06:26	> 1 d	0.0223992	0.0072713	0.0150408
EARTH	2011-07-19 12:30	> 1 w	0.1464231	0.1292955	0.0060239
EARTH	2012-01-19 11:59	> 1 w	0.0600078	0.0269164	0.0131090
EARTH	2025-09-12 08:14	36.1	0.0453365	0.0448267	0.0001699
EARTH	2026-05-04 02:55	297.9	0.1695479	0.1682419	0.0004354
EARTH	2039-09-10 06:53	751.0	0.1091438	0.0640327	0.0158658
EARTH	2040-06-05 08:38	> 1 w	0.1788741	0.1761564	0.0009858
EARTH	2041-02-20 04:03	1279.8	0.0998506	0.0519199	0.0160395
EARTH	2054-07-04 11:22	> 1 w	0.1620471	0.1550956	0.0023797
EARTH	2055-02-08 23:58	> 1 d	0.0169065	0.0066591	0.0096893
EARTH	2069-09-08 23:54	609.4	0.0348215	0.0341674	0.0396746
EARTH	2070-05-14 10:56	> 1 mo	0.1710305	0.1529049	0.0158636
EARTH	2071-02-23 01:33	> 1 w	0.1510336	0.0138910	0.5444322
EARTH	2085-07-29 01:18	> 1 mo	0.1217566	0.0762542	1.5423499
EARTH	2085-12-05 16:34	> 1 mo	0.0904444	0.0789004	0.4788920
EARTH	2086-03-30 10:34	> 1 mo	0.1310085	0.0326045	1.6793338
EARTH	2100-09-04 02:52	> 1 mo	0.1569347	0.0326221	1.7532158
EARTH	2101-06-23 11:27	> 1 mo	0.1642846	0.1359963	0.3057935
EARTH	2102-02-10 10:42	> 1 mo	0.0121018	0.0074540	1.2295530
EARTH	2118-09-04 20:03	> 1 mo	0.0294224	0.0291694	2.4899594
EARTH	2119-05-25 12:58	> 1 mo	0.1664677	0.1470490	2.4118969
EARTH	2120-02-17 23:38	> 1 mo	0.0538001	0.0111852	50.5290603

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
60.66568782	40.71240593	0.00692296	MINIMUM
281.60475318	249.28098471	0.03788534	MINIMUM
348.05706548	321.23690515	0.09020989	SADDLE
172.80512445	147.35654004	0.17934801	SADDLE
355.30693147	149.37229865	1.93093734	SADDLE
177.23764379	331.32456355	2.16845122	MAXIMUM

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MOID Plots

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