Asteroids

2025QA1 help

Last update: 2025-08-24 13:31 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.040

Aphelion (Q)

1.560

Eccentricity (e)

0.200

Inclination (i)

22.5

deg

Orbit period (P)

541.5

Earth MOID

0.03527

U parameter

8.0

Next Earth close approach

Date

2065-08-23

Nominal distance (from Earth center)

0.07979

11936349

Maximum Brightness

21.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.2

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-08-18

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

1.300154

1-sigma variation

0.001127

Unit

Eccentricity (e)

Value

0.200096

1-sigma variation

0.000644

Unit

Inclination (i)

Value

22.5329

1-sigma variation

0.0339

Unit

Long. of Ascending Node (Ω)

Value

326.3243

1-sigma variation

0.0020

Unit

Arg. of Perihelion (ω)

Value

17.8463

1-sigma variation

0.0289

Unit

Mean Anomaly (M)

Value

51.35542

1-sigma variation

0.04574

Unit

Perihelion distance

Value

1.039998

1-sigma variation

Unit

Aphelion distance

Value

1.560309

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.035469

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.553290

1-sigma variation

Unit

MOID

Value

0.035268

1-sigma variation

Unit

Orbit Period

Value

541.4902

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.27044E-6	7.25752E-7	3.82050E-5	2.27564E-6	-3.25889E-5	-5.15590E-5
e	7.25752E-7	4.14593E-7	2.18250E-5	1.29998E-6	-1.86167E-5	-2.94536E-5
i	3.82050E-5	2.18250E-5	1.14891E-3	6.84341E-5	-9.80004E-4	-1.55050E-3
Ω	2.27564E-6	1.29998E-6	6.84341E-5	4.07624E-6	-5.83723E-5	-9.23549E-5
ω	-3.25889E-5	-1.86167E-5	-9.80004E-4	-5.83723E-5	8.36062E-4	1.32251E-3
M	-5.15590E-5	-2.94536E-5	-1.55050E-3	-9.23549E-5	1.32251E-3	2.09249E-3

Date of computation: 2025-08-24 13:31 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

25.16

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

25 - 60*

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

0.721117

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-15.527493

Unit

Source

[2]

Last Observation

Value

2025-08-24.408169

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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 2025QA1 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	1979-08-26 20:53	> 1 w	0.1505881	0.0280924	0.2918388
EARTH	1982-08-17 21:22	> 1 w	0.0601503	0.0352063	0.2508948
EARTH	2022-08-28 10:36	1298.8	0.1888593	0.1178367	0.0237976
EARTH	2025-08-18 23:07	< 1 min	0.0419417	0.0417323	0.0000698
EARTH	2065-08-23 05:28	> 1 w	0.0797896	0.0342924	0.2672445
EARTH	2068-08-13 10:42	> 1 w	0.1426784	0.0293748	0.2769595
EARTH	2108-08-22 10:26	> 1 d	0.0500563	0.0358293	0.0698236
EARTH	2111-08-14 02:47	> 1 d	0.1676418	0.0267964	0.1286961

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
345.82581243	226.19440802	0.03526795	MINIMUM
219.41013857	92.52253964	0.61955655	SADDLE
2.97946529	65.87698353	2.02884654	SADDLE
173.99664972	236.46245486	2.56686718	MAXIMUM

Download:

MOID Plots

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