Asteroids

2025OW3 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.833

Aphelion (Q)

3.052

Eccentricity (e)

0.571

Inclination (i)

4.5

deg

Orbit period (P)

989.0

Earth MOID

0.01332

U parameter

8.2

Next Earth close approach

Date

2033-12-11

Nominal distance (from Earth center)

0.14696

21984708

Maximum Brightness

24.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-07-26

Observatory

Pan-STARRS 1, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.942653

1-sigma variation

0.003856

Unit

Eccentricity (e)

Value

0.571148

1-sigma variation

0.000938

Unit

Inclination (i)

Value

4.5295

1-sigma variation

0.0062

Unit

Long. of Ascending Node (Ω)

Value

303.1199

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

69.3888

1-sigma variation

0.0030

Unit

Mean Anomaly (M)

Value

24.15946

1-sigma variation

0.06397

Unit

Perihelion distance

Value

0.833111

1-sigma variation

Unit

Aphelion distance

Value

3.052195

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.072691

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.654172

1-sigma variation

Unit

MOID

Value

0.013319

1-sigma variation

Unit

Orbit Period

Value

988.9888

1-sigma variation

Unit

U parameter

Value

8.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.48713E-5	3.61737E-6	2.38917E-5	2.56294E-6	-1.16652E-5	-2.46672E-4
e	3.61737E-6	8.79911E-7	5.81149E-6	6.23411E-7	-2.83714E-6	-6.00019E-5
i	2.38917E-5	5.81149E-6	3.83852E-5	4.11817E-6	-1.87532E-5	-3.96293E-4
Ω	2.56294E-6	6.23411E-7	4.11817E-6	4.42126E-7	-2.01418E-6	-4.25114E-5
ω	-1.16652E-5	-2.83714E-6	-1.87532E-5	-2.01418E-6	9.25334E-6	1.93479E-4
M	-2.46672E-4	-6.00019E-5	-3.96293E-4	-4.25114E-5	1.93479E-4	4.09159E-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

26.008

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

17 - 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

215

Unit

Source

[1]

Normalized RMS of residuals

Value

0.77434

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-26.44111

Unit

Source

[2]

Last Observation

Value

2025-08-02.365328

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2025OW3 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	1957-11-05 19:33	> 1 mo	0.1429783	0.0696420	0.8036866
EARTH	1976-11-27 21:41	> 1 mo	0.0683606	0.0663847	0.0951071
EARTH	1995-12-08 00:33	> 1 w	0.1116179	0.0650266	0.0913594
10 Hygiea	1999-07-20 16:28	> 1 w	0.0190271	0.0015202	0.0737792
EARTH	2006-07-30 18:25	> 1 w	0.0643898	0.0125404	0.3511444
7 Iris	2008-05-27 12:30	> 1 w	0.0190184	0.0120919	0.0997489
EARTH	2025-08-03 17:34	< 1 s	0.0197399	0.0196544	0.0000285
EARTH	2033-12-11 01:32	> 1 w	0.1469587	0.0630564	0.1368821
EARTH	2052-11-22 04:09	> 1 mo	0.0942544	0.0623372	0.2570698
EARTH	2071-09-28 15:59	> 1 mo	0.1777094	0.1142408	0.0556362
EARTH	2090-08-08 07:39	> 1 mo	0.0259728	0.0165836	0.3109893
7 Iris	2100-08-01 14:13	> 1 d	0.0197926	0.0075161	0.0189884
EARTH	2109-08-04 18:47	> 1 mo	0.0304404	0.0174566	0.3061030
EARTH	2117-12-10 15:55	> 1 w	0.1097324	0.0694020	0.0743691

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.42672579	211.68573171	0.01331939	MINIMUM
31.05768672	327.83030779	0.06403916	MINIMUM
359.31985076	271.03259583	0.18028105	SADDLE
358.38941031	89.24761150	1.83265714	SADDLE
179.61782755	90.61809495	2.05529008	SADDLE
179.49013961	270.55132760	4.05058652	MAXIMUM

Download:

MOID Plots

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