Asteroids

2025OW help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.475

Aphelion (Q)

1.534

Eccentricity (e)

0.527

Inclination (i)

29.3

deg

Orbit period (P)

367.7

Earth MOID

0.00314

U parameter

4.2

Next Earth close approach

Date

2026-07-30

Nominal distance (from Earth center)

0.04118

6159822

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.6

mag

Diameter

50 - 110*

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

1.004413

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.527389

1-sigma variation

0.000001

Unit

Inclination (i)

Value

29.2778

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

125.7724

1-sigma variation

2.937E-6

Unit

Arg. of Perihelion (ω)

Value

302.3966

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

247.74494

1-sigma variation

0.00065

Unit

Perihelion distance

Value

0.474697

1-sigma variation

Unit

Aphelion distance

Value

1.534129

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.419309

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.005031

1-sigma variation

Unit

MOID

Value

0.003136

1-sigma variation

Unit

Orbit Period

Value

367.6775

1-sigma variation

Unit

U parameter

Value

4.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.34209E-12	2.68152E-12	2.56242E-10	-5.84900E-12	-2.21825E-10	-1.35999E-9
e	2.68152E-12	1.74777E-12	1.64058E-10	-3.77038E-12	-1.30995E-10	-8.34350E-10
i	2.56242E-10	1.64058E-10	1.58278E-8	-3.64957E-10	-1.27004E-8	-7.99100E-8
Ω	-5.84900E-12	-3.77038E-12	-3.64957E-10	8.62638E-12	2.88013E-10	1.82256E-9
ω	-2.21825E-10	-1.30995E-10	-1.27004E-8	2.88013E-10	1.17248E-8	6.98388E-8
M	-1.35999E-9	-8.34350E-10	-7.99100E-8	1.82256E-9	6.98388E-8	4.26297E-7

Date of computation: 2026-06-04 23:11 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

23.621

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

50 - 110*

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

0.664628

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-04.449503

Unit

Source

[2]

Last Observation

Value

2025-07-28.529014

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

143 (4)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2025-07-28

Unit

Source

[3]

Last Observation

Value

2025-07-28

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

3 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2025OW 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	2019-07-23 02:53	1.4	0.1659867	0.1659109	0.0000253
EARTH	2020-07-23 16:59	1.4	0.1325774	0.1325024	0.0000250
EARTH	2021-07-25 04:57	1.3	0.0999706	0.0998972	0.0000245
EARTH	2022-07-26 15:03	1.2	0.0681953	0.0681248	0.0000235
EARTH	2023-07-27 22:24	1.1	0.0383601	0.0382950	0.0000217
EARTH	2024-07-28 01:49	< 1 min	0.0125339	0.0124813	0.0000175
EARTH	2025-07-28 19:43	< 1 s	0.0042292	0.0042292	0.0000000
EARTH	2026-07-30 06:05	< 1 min	0.0411759	0.0411216	0.0000181
EARTH	2027-07-31 15:01	1.3	0.0824049	0.0823006	0.0000347
EARTH	2028-07-31 20:37	1.4	0.1252809	0.1251292	0.0000506
EARTH	2029-08-01 19:49	1.2	0.1688724	0.1686752	0.0000657

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
268.93114750	204.58057652	0.00373143	MINIMUM
59.05426276	53.28607679	0.34712938	MINIMUM
346.27738749	305.47192629	0.61040274	SADDLE
164.26608646	140.61274097	0.75873603	SADDLE
351.90405422	136.41551753	1.45517595	SADDLE
184.08442552	332.56139753	2.46707413	MAXIMUM

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MOID Plots

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