Asteroids

2025OG1 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.986

Aphelion (Q)

1.532

Eccentricity (e)

0.217

Inclination (i)

4.8

deg

Orbit period (P)

516.1

Earth MOID

0.00600

U parameter

6.9

Next Earth close approach

Date

2049-10-26

Nominal distance (from Earth center)

0.10192

15247134

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.2

mag

Diameter

25 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-07-21

Observatory

Pan-STARRS 2, Haleakala

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.259149

1-sigma variation

0.000209

Unit

Eccentricity (e)

Value

0.217056

1-sigma variation

0.000138

Unit

Inclination (i)

Value

4.8235

1-sigma variation

0.0027

Unit

Long. of Ascending Node (Ω)

Value

144.0084

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

216.7154

1-sigma variation

0.0017

Unit

Mean Anomaly (M)

Value

180.71848

1-sigma variation

0.04260

Unit

Perihelion distance

Value

0.985842

1-sigma variation

Unit

Aphelion distance

Value

1.532455

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.465349

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.009097

1-sigma variation

Unit

MOID

Value

0.005996

1-sigma variation

Unit

Orbit Period

Value

516.0763

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.36843E-8	2.88530E-8	5.60447E-7	-3.01361E-7	-3.51306E-7	-8.90407E-6
e	2.88530E-8	1.90571E-8	3.70169E-7	-1.99041E-7	-2.32034E-7	-5.88105E-6
i	5.60447E-7	3.70169E-7	7.19064E-6	-3.86982E-6	-4.50476E-6	-1.14234E-4
Ω	-3.01361E-7	-1.99041E-7	-3.86982E-6	2.12510E-6	2.40156E-6	6.14048E-5
ω	-3.51306E-7	-2.32034E-7	-4.50476E-6	2.40156E-6	2.83984E-6	7.16125E-5
M	-8.90407E-6	-5.88105E-6	-1.14234E-4	6.14048E-5	7.16125E-5	1.81491E-3

Date of computation: 2026-03-17 23:26 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

25.167

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

25 - 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

128

Unit

Source

[1]

Unobserved

Value

125

Unit

Source

[1]

Normalized RMS of residuals

Value

0.471771

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-21.293451

Unit

Source

[2]

Last Observation

Value

2025-11-26.394067

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2025OG1 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	1953-09-26 21:17	> 1 mo	0.0600733	0.0439212	0.1690347
EARTH	1977-10-19 00:36	> 1 mo	0.0849984	0.0674604	0.1572529
EARTH	1994-08-12 10:52	> 1 d	0.0366451	0.0030237	0.0297171
EARTH	2001-11-02 21:49	> 1 d	0.1455871	0.0812574	0.0280353
EARTH	2025-09-05 16:48	1.4	0.0370666	0.0370034	0.0000210
EARTH	2049-10-26 02:20	> 1 d	0.1019208	0.0723563	0.0210068
EARTH	2066-08-23 04:25	> 1 d	0.0104898	0.0067574	0.0112322
EARTH	2076-07-28 09:46	> 1 d	0.1826062	0.0898648	0.0309172
EARTH	2103-09-29 22:02	> 1 mo	0.0598015	0.0454526	0.0433008
EARTH	2113-08-17 08:56	> 1 w	0.0178445	0.0073098	0.0990155

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
332.53139002	226.21889855	0.00570687	MINIMUM
178.79000903	77.71491769	0.53875260	SADDLE
356.05668054	75.37563468	1.98226675	SADDLE
176.82860608	256.14221178	2.53618150	MAXIMUM

Download:

MOID Plots

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