Asteroids

2025GK help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.509

Aphelion (Q)

1.290

Eccentricity (e)

0.434

Inclination (i)

4.4

deg

Orbit period (P)

311.4

Earth MOID

0.01284

U parameter

6.9

Next Earth close approach

Date

2031-04-09

Nominal distance (from Earth center)

0.1415

21167393

Maximum Brightness

24.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-04-02

Observatory

MAPS, San Pedro de Atacama

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

0.899167

1-sigma variation

0.000080

Unit

Eccentricity (e)

Value

0.434186

1-sigma variation

0.000807

Unit

Inclination (i)

Value

4.4180

1-sigma variation

0.0116

Unit

Long. of Ascending Node (Ω)

Value

193.2801

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

138.6978

1-sigma variation

0.0044

Unit

Mean Anomaly (M)

Value

171.92704

1-sigma variation

0.05819

Unit

Perihelion distance

Value

0.508761

1-sigma variation

Unit

Aphelion distance

Value

1.289573

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.081590

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.449728

1-sigma variation

Unit

MOID

Value

0.012842

1-sigma variation

Unit

Orbit Period

Value

311.4288

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.47285E-9	6.48477E-8	9.29334E-7	2.02806E-8	3.47669E-7	4.67538E-6
e	6.48477E-8	6.50758E-7	9.32724E-6	2.03427E-7	3.50577E-6	4.69397E-5
i	9.29334E-7	9.32724E-6	1.33690E-4	2.91627E-6	5.02664E-5	6.72805E-4
Ω	2.02806E-8	2.03427E-7	2.91627E-6	6.43565E-8	1.09370E-6	1.46715E-5
ω	3.47669E-7	3.50577E-6	5.02664E-5	1.09370E-6	1.91485E-5	2.53206E-4
M	4.67538E-6	4.69397E-5	6.72805E-4	1.46715E-5	2.53206E-4	3.38623E-3

Date of computation: 2025-11-24 16:53 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

24.91

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

28 - 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

[-]

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

329

Unit

Source

[1]

Normalized RMS of residuals

Value

0.637962

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-28.328409

Unit

Source

[2]

Last Observation

Value

2025-04-09.098516

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

52 (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 2025GK from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1955-01-01 06:04	> 1 d	0.1175958	0.0772735	0.1553312
EARTH	1961-01-06 00:58	> 1 mo	0.1781946	0.0773332	0.2695051
EARTH	1962-04-12 21:50	> 1 d	0.0646624	0.0125017	0.3701268
VENUS	1967-06-29 20:57	> 1 w	0.0416144	0.0311668	0.3405044
EARTH	1968-04-07 13:38	> 1 w	0.1822102	0.0119838	0.4128711
EARTH	1977-12-29 19:41	> 1 d	0.0990879	0.0762779	0.2113378
EARTH	1979-04-06 17:50	> 1 mo	0.1587240	0.0201437	0.2473044
EARTH	1985-04-10 18:34	> 1 d	0.0939330	0.0120571	0.1756333
VENUS	1988-02-08 07:08	> 1 d	0.0286147	0.0284879	0.0098968
EARTH	1994-12-30 17:37	> 1 d	0.0801854	0.0769205	0.0176866
EARTH	2002-04-13 05:08	228.5	0.0151134	0.0125458	0.0089649
VENUS	2007-06-27 17:36	1126.9	0.0405274	0.0311387	0.0099538
EARTH	2017-12-29 21:17	134.1	0.0755576	0.0754533	0.0003882
EARTH	2025-04-13 02:49	< 1 min	0.0444084	0.0441335	0.0000916
EARTH	2031-04-09 21:35	201.3	0.1414953	0.1272802	0.0047411
VENUS	2032-05-25 07:12	377.9	0.0279186	0.0278028	0.0002428
EARTH	2041-01-01 12:21	709.3	0.1365294	0.1016331	0.0126190
EARTH	2046-12-30 00:23	321.9	0.0963982	0.0759154	0.0117072
EARTH	2048-04-03 15:57	> 1 d	0.1773605	0.1264390	0.0170377
EARTH	2054-04-13 11:23	198.1	0.0227621	0.0135980	0.0186992
VENUS	2056-02-01 09:04	> 1 d	0.0334712	0.0313330	0.0087266
EARTH	2060-04-10 00:47	986.8	0.1176196	0.0488404	0.0231749
EARTH	2075-12-31 04:17	431.7	0.0847274	0.0723741	0.0060051
EARTH	2081-12-31 01:22	129.5	0.1251870	0.1216969	0.0012182
EARTH	2083-04-08 03:41	445.7	0.1523355	0.1446491	0.0025655
VENUS	2085-04-21 15:17	121.4	0.0283805	0.0283788	0.0000200
EARTH	2089-04-13 10:45	32.3	0.0404330	0.0192099	0.0077678
EARTH	2095-04-12 12:17	653.0	0.0648286	0.0202096	0.0159992
VENUS	2100-09-08 07:33	> 1 d	0.0293377	0.0280293	0.0073269
EARTH	2101-04-09 14:03	1093.2	0.1762784	0.1182982	0.0193615
EARTH	2117-01-02 13:24	> 1 d	0.1344902	0.0754588	0.0505859
EARTH	2122-12-31 21:49	> 1 d	0.0818532	0.0747241	0.0178012

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
254.13053283	100.43632319	0.01284182	MINIMUM
101.88159314	356.69827438	0.07539669	MINIMUM
177.67071571	48.71765604	0.30559869	SADDLE
356.31561205	226.31745438	0.50495693	SADDLE
356.83638091	47.13142869	1.49767822	SADDLE
178.92775744	229.48729891	2.30069761	MAXIMUM

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MOID Plots

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