Asteroids

2025QA5 help

Last update: 2025-09-10 09:18 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.014

Aphelion (Q)

4.000

Eccentricity (e)

0.596

Inclination (i)

1.6

deg

Orbit period (P)

1449.6

Earth MOID

0.00337

U parameter

6.9

Next Earth close approach

Date

2029-08-11

Nominal distance (from Earth center)

0.02327

3481579

Maximum Brightness

20.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-08-24

Observatory

Catalina Sky Survey

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

2.506668

1-sigma variation

0.001114

Unit

Eccentricity (e)

Value

0.595678

1-sigma variation

0.000179

Unit

Inclination (i)

Value

1.5984

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

334.0626

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

4.6211

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

20.51722

1-sigma variation

0.01354

Unit

Perihelion distance

Value

1.013502

1-sigma variation

Unit

Aphelion distance

Value

3.999833

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.003585

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.990853

1-sigma variation

Unit

MOID

Value

0.003372

1-sigma variation

Unit

Orbit Period

Value

1449.5845

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.24174E-6	1.99788E-7	3.80509E-7	2.56033E-7	-5.39622E-7	-1.50839E-5
e	1.99788E-7	3.21447E-8	6.12217E-8	4.11941E-8	-8.68204E-8	-2.42691E-6
i	3.80509E-7	6.12217E-8	1.16857E-7	7.82731E-8	-1.64580E-7	-4.62231E-6
Ω	2.56033E-7	4.11941E-8	7.82731E-8	5.29784E-8	-1.11592E-7	-3.11011E-6
ω	-5.39622E-7	-8.68204E-8	-1.64580E-7	-1.11592E-7	2.41334E-7	6.55370E-6
M	-1.50839E-5	-2.42691E-6	-4.62231E-6	-3.11011E-6	6.55370E-6	1.83231E-4

Date of computation: 2025-09-10 09:18 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

27.631

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

8 - 18*

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

0.523121

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-24.339873

Unit

Source

[2]

Last Observation

Value

2025-08-31.46873

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

42 (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 2025QA5 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	2017-10-11 11:00	300.0	0.1934187	0.1793011	0.0047074
EARTH	2021-09-06 14:36	> 1 d	0.0067754	0.0018799	0.0043514
EARTH	2025-08-23 17:15	< 1 s	0.0065505	0.0065453	0.0000017
EARTH	2029-08-11 22:53	> 1 d	0.0232729	0.0027371	0.0095381
EARTH	2092-09-27 17:09	> 1 mo	0.0185348	0.0142436	0.1055251
EARTH	2123-10-15 13:03	> 1 mo	0.0181998	0.0169783	0.3523997

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
358.43229084	235.06986464	0.00337220	MINIMUM
358.91792655	56.02761273	2.00474873	SADDLE
179.72374475	57.02756195	3.00846278	SADDLE
179.71601156	237.01977131	5.00995932	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025QA5

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS	TS
2033-08-25.174	63834.174	3.973	0.000	1.48 ± 0.001	4.27E3	5.86E-8	3.70E-2	-7.76	0


Based on 42 optical observations (of which 0 are rejected as outliers) from 2025/08/24.340 to 2025/08/31.469.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.70 and 1.70 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250901 144024.396 UTC.

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Download Impactor Table as: