Asteroids

2025GW help

Last update: 2025-04-15 07:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.003

Aphelion (Q)

3.670

Eccentricity (e)

0.571

Inclination (i)

0.4

deg

Orbit period (P)

1304.6

Earth MOID

0.00380

U parameter

6.2

Next Earth close approach

Date

2057-05-04

Nominal distance (from Earth center)

0.06146

9194031

Maximum Brightness

23.1

mag

Risk

Object is in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-07

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.336615

1-sigma variation

0.000345

Unit

Eccentricity (e)

Value

0.570802

1-sigma variation

0.000063

Unit

Inclination (i)

Value

0.3502

1-sigma variation

3.131E-5

Unit

Long. of Ascending Node (Ω)

Value

181.2903

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

8.0035

1-sigma variation

0.0005

Unit

Mean Anomaly (M)

Value

9.43002

1-sigma variation

0.00215

Unit

Perihelion distance

Value

1.002870

1-sigma variation

Unit

Aphelion distance

Value

3.670359

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.009969

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.619051

1-sigma variation

Unit

MOID

Value

0.003798

1-sigma variation

Unit

Orbit Period

Value

1304.6050

1-sigma variation

Unit

U parameter

Value

6.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.19172E-7	2.18409E-8	1.03734E-8	-3.68036E-8	6.38451E-8	-7.40733E-7
e	2.18409E-8	4.00283E-9	1.90120E-9	-6.74236E-9	1.16976E-8	-1.35755E-7
i	1.03734E-8	1.90120E-9	9.80329E-10	5.78209E-10	1.66391E-9	-6.44522E-8
Ω	-3.68036E-8	-6.74236E-9	5.78209E-10	1.96802E-7	-2.10961E-7	2.30056E-7
ω	6.38451E-8	1.16976E-8	1.66391E-9	-2.10961E-7	2.32896E-7	-3.98502E-7
M	-7.40733E-7	-1.35755E-7	-6.44522E-8	2.30056E-7	-3.98502E-7	4.60422E-6

Date of computation: 2025-04-11 12:27 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

27.062

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

10 - 23*

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

0.704689

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-07.278728

Unit

Source

[2]

Last Observation

Value

2025-04-11.46939

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

158 (6)

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 2025GW 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	1954-02-25 10:52	> 1 mo	0.1140040	0.0009769	1.5913424
EARTH	1979-03-13 06:59	> 1 w	0.0125064	0.0005466	0.0276070
EARTH	2025-04-07 14:34	< 1 s	0.0059514	0.0059497	0.0000006
MARS	2050-05-26 19:51	> 1 d	0.0464603	0.0411051	0.0130752
EARTH	2057-05-04 01:25	> 1 d	0.0614583	0.0033565	0.0349064
EARTH	2082-04-29 09:30	> 1 w	0.0316968	0.0034024	0.0760345

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
1.19398007	88.41034410	0.00379846	MINIMUM
1.34250322	268.69360492	2.00331758	SADDLE
180.36683709	267.50508791	2.66974242	SADDLE
180.36606280	87.50432064	4.66942628	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2025GW

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2093-03-19.135	85590.135	-1.213	0.65 ± 0.002	3.34E4	1.82E-5	1.40E-6	-5.94
2111-03-20.146	92164.146	-1.234	1.09 ± 0.002	5.48E5	9.00E-7	6.97E-8	-7.35
2111-03-20.360	92164.360	-1.142	1.51 ± 0.008	1.71E6	1.88E-7	1.45E-8	-8.03


Based on 142 optical observations (of which 6 are rejected as outliers) from 2025/04/07.279 to 2025/04/09.299.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.69 and 1.69 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250410 113545.845 UTC.

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Download Impactor Table as: