Asteroids

2025GY help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.816

Aphelion (Q)

1.577

Eccentricity (e)

0.318

Inclination (i)

6.7

deg

Orbit period (P)

478.0

Earth MOID

0.00087

U parameter

6.3

Next Earth close approach

Date

2028-12-07

Nominal distance (from Earth center)

0.16144

24150499

Maximum Brightness

28.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

28.3

mag

Diameter

6 - 13*

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.196391

1-sigma variation

0.000075

Unit

Eccentricity (e)

Value

0.318103

1-sigma variation

0.000065

Unit

Inclination (i)

Value

6.6604

1-sigma variation

0.0013

Unit

Long. of Ascending Node (Ω)

Value

196.8278

1-sigma variation

4.166E-5

Unit

Arg. of Perihelion (ω)

Value

283.7072

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

215.32366

1-sigma variation

0.02273

Unit

Perihelion distance

Value

0.815815

1-sigma variation

Unit

Aphelion distance

Value

1.576966

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.002211

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.164024

1-sigma variation

Unit

MOID

Value

0.000873

1-sigma variation

Unit

Orbit Period

Value

477.9780

1-sigma variation

Unit

U parameter

Value

6.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.62716E-9	4.84639E-9	9.77338E-8	2.97651E-9	4.29354E-8	-1.70494E-6
e	4.84639E-9	4.18076E-9	8.43638E-8	2.53674E-9	3.57324E-8	-1.46807E-6
i	9.77338E-8	8.43638E-8	1.70378E-6	5.11035E-8	7.10699E-7	-2.96033E-5
Ω	2.97651E-9	2.53674E-9	5.11035E-8	1.73555E-9	2.75675E-8	-9.03042E-7
ω	4.29354E-8	3.57324E-8	7.10699E-7	2.75675E-8	5.55211E-7	-1.30640E-5
M	-1.70494E-6	-1.46807E-6	-2.96033E-5	-9.03042E-7	-1.30640E-5	5.16583E-4

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

28.301

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

6 - 13*

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

312

Unit

Source

[1]

Normalized RMS of residuals

Value

0.599632

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-04-07.476317

Unit

Source

[2]

Last Observation

Value

2025-04-09.22108

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

58 (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 2025GY 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	1950-11-08 15:23	268.0	0.0687694	0.0655303	0.0012454
EARTH	1955-01-15 14:05	> 1 d	0.1875617	0.1859553	0.0005466
EARTH	1959-04-01 16:52	> 1 d	0.0516186	0.0153145	0.0121039
EARTH	1981-11-07 06:54	543.7	0.0797074	0.0691172	0.0041055
EARTH	1985-12-29 01:12	> 1 d	0.1770063	0.1681967	0.0029485
EARTH	1990-03-09 03:30	> 1 d	0.1372639	0.1119393	0.0085231
EARTH	1994-04-13 12:01	1187.4	0.0912014	0.0488284	0.0141262
EARTH	2016-11-14 23:43	510.9	0.0901495	0.0816852	0.0029622
EARTH	2021-02-03 14:14	> 1 d	0.1835230	0.1822950	0.0004108
EARTH	2025-04-06 17:30	< 1 min	0.0023147	0.0023132	0.0000005
EARTH	2028-12-07 14:06	> 1 d	0.1614361	0.1569760	0.0014872
EARTH	2042-04-12 16:07	854.4	0.0792221	0.0490165	0.0100701
EARTH	2046-01-10 21:00	> 1 d	0.1946276	0.1916234	0.0010110
EARTH	2049-10-27 01:17	489.0	0.1852505	0.1600447	0.0084559
EARTH	2063-02-27 21:36	> 1 d	0.1595902	0.1544329	0.0017248
EARTH	2066-11-05 04:04	99.6	0.0539814	0.0536806	0.0001780
EARTH	2080-03-31 00:48	434.0	0.0663818	0.0596474	0.0022454
EARTH	2083-11-11 12:05	327.4	0.0972658	0.0912217	0.0020393
EARTH	2097-04-04 14:35	516.3	0.0301322	0.0191164	0.0036772
EARTH	2100-11-11 12:55	318.6	0.0972052	0.0916070	0.0018848
EARTH	2114-03-08 16:33	> 1 w	0.1453229	0.1011999	0.0150690
EARTH	2117-11-03 06:45	> 1 d	0.0718751	0.0534399	0.0186447

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
59.28476880	94.94016208	0.00087317	MINIMUM
299.48324172	301.82148488	0.05305732	MINIMUM
358.37523649	16.69825369	0.19680412	SADDLE
179.67545284	199.29415098	0.57775337	SADDLE
0.95966452	200.22847800	1.83007870	SADDLE
180.85127090	20.14675567	2.55765941	MAXIMUM

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MOID Plots

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