Asteroids

2024GJ2 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.637

Aphelion (Q)

1.496

Eccentricity (e)

0.402

Inclination (i)

1.0

deg

Orbit period (P)

402.3

Earth MOID

0.00001

U parameter

4.0

Next Earth close approach

Date

2035-04-15

Nominal distance (from Earth center)

0.08528

12757190

Maximum Brightness

27.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

30.3

mag

Diameter

2.3 - 5*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-04-09

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.066532

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.402400

1-sigma variation

0.000001

Unit

Inclination (i)

Value

1.0221

1-sigma variation

3.177E-6

Unit

Long. of Ascending Node (Ω)

Value

201.9110

1-sigma variation

3.551E-7

Unit

Arg. of Perihelion (ω)

Value

105.6920

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

288.81897

1-sigma variation

0.00063

Unit

Perihelion distance

Value

0.637359

1-sigma variation

Unit

Aphelion distance

Value

1.495705

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000155

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.190616

1-sigma variation

Unit

MOID

Value

0.000006

1-sigma variation

Unit

Orbit Period

Value

402.3086

1-sigma variation

Unit

U parameter

Value

4.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.22209E-12	1.52000E-12	4.21198E-12	2.57755E-13	-2.66542E-10	-1.13684E-9
e	1.52000E-12	7.30035E-13	2.03142E-12	1.28396E-13	-1.24620E-10	-5.35823E-10
i	4.21198E-12	2.03142E-12	1.00909E-11	9.79544E-13	-3.45216E-10	-1.48448E-9
Ω	2.57755E-13	1.28396E-13	9.79544E-13	1.26085E-13	-2.08374E-11	-9.06951E-11
ω	-2.66542E-10	-1.24620E-10	-3.45216E-10	-2.08374E-11	2.21458E-8	9.40841E-8
M	-1.13684E-9	-5.35823E-10	-1.48448E-9	-9.06951E-11	9.40841E-8	4.01126E-7

Date of computation: 2025-07-29 02:36 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

30.305

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

2.3 - 5*

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

515

Unit

Source

[1]

Normalized RMS of residuals

Value

0.579184

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-04-09.399852

Unit

Source

[2]

Last Observation

Value

2024-04-11.775026

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

95 (3)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2024-04-11

Unit

Source

[3]

Last Observation

Value

2024-04-11

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (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

Close Approaches for 2024GJ2 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	1961-04-06 16:16	1.9	0.0771993	0.0771129	0.0000288
VENUS	1961-05-28 18:29	10.5	0.0444781	0.0444592	0.0000063
EARTH	1964-09-13 19:57	10.5	0.0813867	0.0811860	0.0000669
EARTH	1972-04-18 03:32	42.4	0.0782403	0.0774323	0.0002694
EARTH	1975-09-26 09:52	25.8	0.0747144	0.0737833	0.0003104
EARTH	2013-04-07 23:00	10.0	0.0630371	0.0626806	0.0001189
EARTH	2016-09-12 20:05	16.0	0.0940273	0.0937574	0.0000900
EARTH	2024-04-11 18:29	< 1 s	0.0001248	0.0001248	0.0000000
EARTH	2035-04-15 16:39	6.7	0.0852765	0.0848317	0.0001483
EARTH	2037-11-09 14:14	3.8	0.1301759	0.1296987	0.0001591
EARTH	2046-04-16 16:47	6.7	0.1853315	0.1848968	0.0001449
EARTH	2048-11-12 19:12	7.1	0.0239713	0.0236116	0.0001200
VENUS	2053-01-06 12:09	11.7	0.0418308	0.0415272	0.0001012
EARTH	2057-04-14 19:27	18.4	0.1985399	0.1978820	0.0002193
EARTH	2059-11-12 18:21	16.2	0.0488148	0.0479108	0.0003014
EARTH	2068-04-15 05:20	12.4	0.1045186	0.1036113	0.0003024
VENUS	2068-05-25 11:44	38.4	0.0337262	0.0326779	0.0003496
EARTH	2070-11-10 07:33	< 1 min	0.1747277	0.1744960	0.0000772
EARTH	2079-04-08 17:10	42.5	0.0873706	0.0851155	0.0007517
VENUS	2088-04-16 07:34	153.1	0.0481550	0.0468788	0.0004732
VENUS	2093-08-16 20:25	252.8	0.0144192	0.0095409	0.0017695
EARTH	2093-11-15 13:02	130.7	0.0218102	0.0179211	0.0013268
EARTH	2102-04-15 14:29	865.2	0.0562197	0.0055780	0.0169007
EARTH	2113-04-07 08:36	1112.9	0.1453187	0.0871479	0.0193904
VENUS	2113-07-06 08:12	> 1 d	0.0445352	0.0445036	0.0008240
EARTH	2116-11-22 19:19	> 1 d	0.1782147	0.0951033	0.0277420
VENUS	2118-11-05 12:59	> 1 d	0.0427916	0.0069301	0.0379955

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
278.58319207	98.82008229	0.00000608	MINIMUM
79.61290686	309.94157187	0.00865807	MINIMUM
358.60392184	203.83101252	0.37769802	SADDLE
179.39384645	24.71407646	0.51097395	SADDLE
358.66077941	23.90202660	1.62240699	SADDLE
179.40020612	204.71050027	2.51036608	MAXIMUM

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MOID Plots

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