Asteroids

2025OJ1 help

Last update: 2025-07-30 13:15 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.720

Aphelion (Q)

1.979

Eccentricity (e)

0.467

Inclination (i)

7.7

deg

Orbit period (P)

572.4

Earth MOID

0.03088

U parameter

8.7

Next Earth close approach

Date

2025-08-08

Nominal distance (from Earth center)

0.03453

5165193

Maximum Brightness

19.4

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

22.9

mag

Diameter

70 - 150*

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

1.349218

1-sigma variation

0.002946

Unit

Eccentricity (e)

Value

0.466603

1-sigma variation

0.001601

Unit

Inclination (i)

Value

7.7219

1-sigma variation

0.0215

Unit

Long. of Ascending Node (Ω)

Value

149.2353

1-sigma variation

0.0115

Unit

Arg. of Perihelion (ω)

Value

251.1230

1-sigma variation

0.0266

Unit

Mean Anomaly (M)

Value

265.50738

1-sigma variation

0.35743

Unit

Perihelion distance

Value

0.719668

1-sigma variation

Unit

Aphelion distance

Value

1.978767

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.254191

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.093801

1-sigma variation

Unit

MOID

Value

0.030879

1-sigma variation

Unit

Orbit Period

Value

572.4289

1-sigma variation

Unit

U parameter

Value

8.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.67603E-6	4.71683E-6	6.32711E-5	3.23063E-5	-7.70119E-5	1.05281E-3
e	4.71683E-6	2.56454E-6	3.44087E-5	1.75171E-5	-4.18041E-5	5.72378E-4
i	6.32711E-5	3.44087E-5	4.62064E-4	2.32719E-4	-5.57678E-4	7.67805E-3
Ω	3.23063E-5	1.75171E-5	2.32719E-4	1.33040E-4	-3.04177E-4	3.91896E-3
ω	-7.70119E-5	-4.18041E-5	-5.57678E-4	-3.04177E-4	7.07474E-4	-9.34337E-3
M	1.05281E-3	5.72378E-4	7.67805E-3	3.91896E-3	-9.34337E-3	1.27756E-1

Date of computation: 2025-07-30 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

22.936

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

70 - 150*

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

0.425076

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-21.279132

Unit

Source

[2]

Last Observation

Value

2025-07-29.51042

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

51 (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 2025OJ1 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
VENUS	1950-06-30 15:04	> 1 mo	0.0345080	0.0345024	0.0049027
EARTH	1960-01-30 12:15	> 1 w	0.1424076	0.0603585	0.3296598
EARTH	1967-08-18 01:46	> 1 w	0.1014978	0.0361015	0.1151742
EARTH	1971-01-20 12:16	> 1 d	0.0816519	0.0586044	0.0130785
EARTH	1978-08-06 09:07	> 1 w	0.0542569	0.0325188	0.1849585
EARTH	2014-08-30 23:41	> 1 mo	0.1729321	0.0548765	0.1950109
EARTH	2018-01-24 09:34	> 1 w	0.0605471	0.0599017	0.0233172
EARTH	2025-08-08 09:06	1.3	0.0345225	0.0341713	0.0001170
EARTH	2050-09-02 21:48	> 1 mo	0.1827223	0.0600581	0.1970133
EARTH	2054-01-23 13:08	> 1 w	0.0604265	0.0588737	0.0559375
EARTH	2061-08-03 10:17	> 1 w	0.1035328	0.0313374	0.3419960
EARTH	2086-08-21 20:58	> 1 mo	0.1252547	0.0368301	0.2977089
VENUS	2088-04-21 07:12	> 1 mo	0.0382178	0.0359997	0.0959331
EARTH	2090-01-20 19:41	> 1 w	0.0848359	0.0572871	0.3132774
EARTH	2097-08-01 15:14	> 1 mo	0.1377031	0.0311636	0.8813433
EARTH	2115-02-01 18:35	> 1 mo	0.1437881	0.0564471	0.6426507
EARTH	2122-08-12 02:00	> 1 d	0.0304163	0.0285280	0.0336779

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
303.26823970	215.09192940	0.03088303	MINIMUM
56.20815885	21.04914175	0.05976611	MINIMUM
0.00175096	299.10546983	0.29291441	SADDLE
179.83675438	117.44050946	0.98806744	SADDLE
358.15338766	116.06821183	1.72358806	SADDLE
178.99556421	296.93398708	2.96602875	MAXIMUM

Download:

MOID Plots

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