Asteroids

2024OJ2 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.045

Aphelion (Q)

2.129

Eccentricity (e)

0.341

Inclination (i)

17.0

deg

Orbit period (P)

730.4

Earth MOID

0.04536

U parameter

7.9

Next Earth close approach

Date

2026-08-04

Nominal distance (from Earth center)

0.04794

7171189

Maximum Brightness

19.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-07-31

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.587220

1-sigma variation

0.001588

Unit

Eccentricity (e)

Value

0.341496

1-sigma variation

0.000629

Unit

Inclination (i)

Value

17.0087

1-sigma variation

0.0191

Unit

Long. of Ascending Node (Ω)

Value

130.5690

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

200.3757

1-sigma variation

0.0090

Unit

Mean Anomaly (M)

Value

323.65109

1-sigma variation

0.48014

Unit

Perihelion distance

Value

1.045191

1-sigma variation

Unit

Aphelion distance

Value

2.129249

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.077154

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.047030

1-sigma variation

Unit

MOID

Value

0.045361

1-sigma variation

Unit

Orbit Period

Value

730.3890

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.52258E-6	9.98877E-7	3.03197E-5	1.27680E-6	-1.39576E-5	-7.62579E-4
e	9.98877E-7	3.95534E-7	1.20060E-5	5.05592E-7	-5.52333E-6	-3.01964E-4
i	3.03197E-5	1.20060E-5	3.64450E-4	1.53471E-5	-1.67528E-4	-9.16579E-3
Ω	1.27680E-6	5.05592E-7	1.53471E-5	6.46339E-7	-7.05210E-6	-3.85984E-4
ω	-1.39576E-5	-5.52333E-6	-1.67528E-4	-7.05210E-6	8.08185E-5	4.21777E-3
M	-7.62579E-4	-3.01964E-4	-9.16579E-3	-3.85984E-4	4.21777E-3	2.30529E-1

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

24.918

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

28 - 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

Unit

Source

[1]

Unobserved

Value

669

Unit

Source

[1]

Normalized RMS of residuals

Value

0.709486

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-07-31.455588

Unit

Source

[2]

Last Observation

Value

2024-08-03.98679

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

49 (1)

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 2024OJ2 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	2014-07-26 00:35	> 1 w	0.1511146	0.0296887	0.1102376
EARTH	2016-07-28 22:54	> 1 d	0.1050341	0.0380242	0.0876017
EARTH	2018-08-01 01:39	> 1 d	0.0741105	0.0430125	0.0567150
EARTH	2020-08-02 09:08	> 1 d	0.0563632	0.0447668	0.0254335
EARTH	2022-08-04 01:11	> 1 d	0.0489614	0.0454990	0.0066753
EARTH	2024-08-03 22:14	< 1 min	0.0479465	0.0477614	0.0000617
EARTH	2026-08-04 06:24	> 1 d	0.0479364	0.0455622	0.0056032
EARTH	2028-08-03 05:46	> 1 d	0.0507934	0.0456176	0.0187328
EARTH	2030-08-02 05:50	> 1 d	0.0623887	0.0446945	0.0542621
EARTH	2032-07-30 10:27	> 1 w	0.0868725	0.0411748	0.1005223
EARTH	2034-07-28 02:30	> 1 w	0.1232003	0.0356785	0.1366887
EARTH	2036-07-24 06:53	> 1 w	0.1717634	0.0273327	0.1618007

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
347.11337121	211.74251419	0.04463573	MINIMUM
183.24246659	50.66226336	1.15007782	SADDLE
0.28400816	49.93688285	2.03198751	SADDLE
177.75029922	226.95464999	3.13812723	MAXIMUM

Download:

MOID Plots

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