Asteroids

2025GD1 help

Last update: 2025-04-18 14:32 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.989

Aphelion (Q)

1.544

Eccentricity (e)

0.219

Inclination (i)

7.3

deg

Orbit period (P)

520.7

Earth MOID

0.01063

U parameter

7.0

Next Earth close approach

Date

2025-04-22

Nominal distance (from Earth center)

0.01066

1594436

Maximum Brightness

17.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-07

Observatory

Mt. Lemmon 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

1.266596

1-sigma variation

0.000239

Unit

Eccentricity (e)

Value

0.219300

1-sigma variation

0.000155

Unit

Inclination (i)

Value

7.3214

1-sigma variation

0.0042

Unit

Long. of Ascending Node (Ω)

Value

29.5010

1-sigma variation

2.393E-5

Unit

Arg. of Perihelion (ω)

Value

213.2091

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

349.25031

1-sigma variation

0.00428

Unit

Perihelion distance

Value

0.988831

1-sigma variation

Unit

Aphelion distance

Value

1.544361

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.481691

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.014202

1-sigma variation

Unit

MOID

Value

0.010625

1-sigma variation

Unit

Orbit Period

Value

520.6617

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.73221E-8	3.71263E-8	1.01141E-6	1.13738E-9	2.21170E-8	1.02478E-6
e	3.71263E-8	2.40461E-8	6.55064E-7	7.27419E-10	1.43976E-8	6.63698E-7
i	1.01141E-6	6.55064E-7	1.78458E-5	2.02252E-8	3.89168E-7	1.80820E-5
Ω	1.13738E-9	7.27419E-10	2.02252E-8	5.72770E-10	-3.26955E-9	2.19071E-8
ω	2.21170E-8	1.43976E-8	3.89168E-7	-3.26955E-9	3.89440E-8	3.81729E-7
M	1.02478E-6	6.63698E-7	1.80820E-5	2.19071E-8	3.81729E-7	1.83269E-5

Date of computation: 2025-04-18 12:30 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

25.622

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

20 - 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

[-]

Download this part as:

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

0.7

Unit

Source

[1]

Normalized RMS of residuals

Value

0.58052

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-07.163288

Unit

Source

[2]

Last Observation

Value

2025-04-18.29039

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

79 (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 2025GD1 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	1951-04-04 17:27	> 1 d	0.1928611	0.0081101	0.0769837
EARTH	1968-07-11 17:30	> 1 d	0.1901059	0.1245828	0.0451583
EARTH	1978-05-05 09:55	> 1 w	0.0515139	0.0004737	0.0317088
EARTH	1988-04-14 04:11	> 1 d	0.0629868	0.0054632	0.0457506
EARTH	2015-06-25 12:24	> 1 d	0.1350143	0.1131360	0.0093587
EARTH	2025-04-22 23:21	< 1 min	0.0106581	0.0106385	0.0000065
EARTH	2052-07-15 01:57	> 1 d	0.1946501	0.1322666	0.0270537
EARTH	2062-05-15 02:49	> 1 w	0.0744069	0.0193736	0.0286402
EARTH	2072-04-16 01:38	> 1 d	0.0486815	0.0082673	0.0186792
MARS	2088-07-08 04:18	> 1 w	0.0444936	0.0232813	0.0497245
EARTH	2099-05-05 19:09	> 1 mo	0.0523258	0.0007666	0.1251946
EARTH	2109-04-10 10:44	> 1 d	0.1255071	0.0175599	0.0360031

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
335.67173039	109.42418395	0.01062532	MINIMUM
185.05476327	324.64583160	0.56474852	SADDLE
3.44201694	324.00290308	1.97451016	SADDLE
180.93441439	141.39345635	2.55542094	MAXIMUM

Download:

MOID Plots

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