Asteroids

2025OO4 help

Last update: 2025-07-29 13:15 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Amor

Perihelion (q)

1.021

Aphelion (Q)

3.038

Eccentricity (e)

0.497

Inclination (i)

9.6

deg

Orbit period (P)

1055.9

Earth MOID

0.01439

U parameter

7.4

Next Earth close approach

Date

2074-07-16

Nominal distance (from Earth center)

0.06906

10331797

Maximum Brightness

22.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.029269

1-sigma variation

0.001112

Unit

Eccentricity (e)

Value

0.496986

1-sigma variation

0.000274

Unit

Inclination (i)

Value

9.5507

1-sigma variation

0.0036

Unit

Long. of Ascending Node (Ω)

Value

125.2114

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

193.7176

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

327.26908

1-sigma variation

0.02738

Unit

Perihelion distance

Value

1.020750

1-sigma variation

Unit

Aphelion distance

Value

3.037789

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.969336

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015573

1-sigma variation

Unit

MOID

Value

0.014393

1-sigma variation

Unit

Orbit Period

Value

1055.8641

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.23762E-6	3.04750E-7	3.95261E-6	5.71253E-8	-4.42945E-7	3.04615E-5
e	3.04750E-7	7.50412E-8	9.73285E-7	1.40664E-8	-1.09067E-7	7.50078E-6
i	3.95261E-6	9.73285E-7	1.26237E-5	1.82437E-7	-1.41443E-6	9.72851E-5
Ω	5.71253E-8	1.40664E-8	1.82437E-7	2.64851E-9	-2.04580E-8	1.40602E-6
ω	-4.42945E-7	-1.09067E-7	-1.41443E-6	-2.04580E-8	1.61685E-7	-1.09031E-5
M	3.04615E-5	7.50078E-6	9.72851E-5	1.40602E-6	-1.09031E-5	7.49744E-4

Date of computation: 2025-07-29 13:15 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

26.031

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.811186

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-14.271549

Unit

Source

[2]

Last Observation

Value

2025-07-28.989282

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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 2025OO4 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1970-09-07 22:12	> 1 mo	0.1603964	0.0718324	0.9008675
EARTH	1999-07-22 23:07	> 1 w	0.0333715	0.0059398	0.1013410
EARTH	2025-07-28 15:58	< 1 s	0.0151996	0.0151790	0.0000069
EARTH	2074-07-16 01:01	> 1 w	0.0690638	0.0042539	0.1708204
EARTH	2097-07-10 20:45	> 1 mo	0.1064417	0.0115629	0.2786715
EARTH	2120-07-03 10:58	> 1 w	0.1953386	0.0253266	0.3451253

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
353.02333642	205.05222441	0.01439318	MINIMUM
359.37340252	35.97170330	2.00714652	SADDLE
179.99562182	36.32467521	2.05213805	SADDLE
179.52721307	216.05290036	4.05030481	MAXIMUM

Download:

MOID Plots

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