Asteroids

2024CJ1 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.897

Aphelion (Q)

1.697

Eccentricity (e)

0.308

Inclination (i)

0.3

deg

Orbit period (P)

539.6

Earth MOID

0.00181

U parameter

7.0

Next Earth close approach

Date

2052-06-03

Nominal distance (from Earth center)

0.00963

1440809

Maximum Brightness

20.5

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

28.5

mag

Diameter

5 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-02-06

Observatory

GINOP-KHK, Piszkesteto

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

1.297163

1-sigma variation

0.000241

Unit

Eccentricity (e)

Value

0.308441

1-sigma variation

0.000152

Unit

Inclination (i)

Value

0.2659

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

343.2038

1-sigma variation

0.0408

Unit

Arg. of Perihelion (ω)

Value

209.2971

1-sigma variation

0.0416

Unit

Mean Anomaly (M)

Value

45.75076

1-sigma variation

0.11023

Unit

Perihelion distance

Value

0.897065

1-sigma variation

Unit

Aphelion distance

Value

1.697261

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.597493

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.067731

1-sigma variation

Unit

MOID

Value

0.001814

1-sigma variation

Unit

Orbit Period

Value

539.6226

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.80980E-8	3.67251E-8	-7.99919E-8	9.78938E-6	-9.96943E-6	-2.65702E-5
e	3.67251E-8	2.32155E-8	-5.05342E-8	6.18504E-6	-6.29863E-6	-1.67958E-5
i	-7.99919E-8	-5.05342E-8	1.11678E-7	-1.36325E-5	1.38904E-5	3.65790E-5
Ω	9.78938E-6	6.18504E-6	-1.36325E-5	1.66489E-3	-1.69622E-3	-4.47661E-3
ω	-9.96943E-6	-6.29863E-6	1.38904E-5	-1.69622E-3	1.72819E-3	4.55892E-3
M	-2.65702E-5	-1.67958E-5	3.65790E-5	-4.47661E-3	4.55892E-3	1.21515E-2

Date of computation: 2025-09-10 00:30 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

28.469

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

5 - 12*

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

[-]

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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

586

Unit

Source

[1]

Normalized RMS of residuals

Value

0.540163

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-02-06.97869

Unit

Source

[2]

Last Observation

Value

2024-02-09.598738

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

48 (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 2024CJ1 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	1951-06-14 00:45	> 1 mo	0.1846009	0.0012109	0.6500462
EARTH	1980-01-27 10:43	> 1 d	0.1576264	0.0018262	0.1048841
EARTH	1983-03-01 16:35	> 1 w	0.0676200	0.0093490	0.0194514
EARTH	1986-05-23 03:50	> 1 w	0.0294488	0.0013417	0.0444753
EARTH	1989-06-12 23:51	> 1 d	0.1749323	0.0225417	0.0508054
EARTH	2024-02-09 20:09	< 1 s	0.0024570	0.0024537	0.0000011
MARS	2034-02-17 06:47	358.9	0.0245294	0.0009747	0.0130083
EARTH	2052-06-03 13:15	> 1 d	0.0096312	0.0047214	0.0243256
EARTH	2055-05-04 15:30	> 1 mo	0.0841857	0.0078404	0.1105941
EARTH	2058-03-22 05:05	> 1 mo	0.0944333	0.0097086	0.1283422
EARTH	2061-02-13 07:15	> 1 mo	0.0145647	0.0007412	0.6212534
EARTH	2064-02-10 09:53	> 1 mo	0.0083537	0.0006133	3.7279517
MARS	2083-01-15 03:12	> 1 mo	0.0064907	0.0014151	415.8579186
EARTH	2095-06-19 17:02	> 1 mo	0.1874966	0.0047109	3409.4866638
EARTH	2098-05-29 22:21	> 1 mo	0.0264610	0.0049913	3625.9401226
EARTH	2101-03-04 21:02	> 1 mo	0.0723370	0.0004914	1457.3584636
EARTH	2104-01-29 10:39	> 1 mo	0.1708192	0.0014059	8783.4307775

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
320.82313665	37.52506943	0.00184205	MINIMUM
44.94727336	149.06677457	0.00477501	MINIMUM
3.23135222	93.66461690	0.10339616	SADDLE
181.70101927	272.04946863	0.69780824	SADDLE
3.20810243	273.63477292	1.89631655	SADDLE
181.69995442	92.04933816	2.69748424	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2024CJ1

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2064-02-11.537	74961.537	-0.744	1.14 ± 0.215	1.04E7	8.11E-8	1.25E-2	-8.69
2092-02-11.944	85188.944	-2.380	0.73 ± 0.026	2.88E5	2.70E-7	1.26E-2	-8.40
2094-02-09.012	85917.012	0.631	1.65 ± 0.014	2.31E6	3.10E-7	1.26E-2	-8.34
2094-02-09.048	85917.048	-0.324	0.59 ± 0.014	5.59E6	2.31E-7	1.26E-2	-8.47
2095-02-08.602	86281.602	3.690	0.82 ± 0.068	6.65E4	2.15E-8	1.27E-2	-9.50
2097-02-11.477	87015.477	-0.418	1.29 ± 0.028	8.18E7	1.15E-8	1.26E-2	-9.80
2098-02-11.709	87380.709	1.637	0.52 ± 0.023	1.09E5	3.39E-6	1.26E-2	-7.33
2104-02-12.411	89571.411	0.441	1.19 ± 0.127	3.43E9	3.14E-10	1.26E-2	-11.40
2107-02-13.090	90668.090	-4.136	0.51 ± 0.021	8.25E5	3.36E-10	1.26E-2	-11.39
2111-02-13.393	92129.393	0.634	1.21 ± 0.011	9.99E7	8.82E-9	1.26E-2	-9.99
2116-02-13.304	93955.304	-0.299	1.07 ± 0.026	2.84E6	4.05E-7	1.26E-2	-8.35
2119-02-12.704	95050.704	0.570	0.90 ± 0.024	1.66E5	6.44E-6	1.26E-2	-7.17
2122-02-12.499	96146.499	0.568	1.74 ± 0.025	2.81E6	3.00E-7	1.26E-2	-8.52
2123-02-11.894	96510.894	0.654	0.99 ± 0.000	8.77E7	1.30E-8	1.25E-2	-9.88


Based on 48 optical observations (of which 0 are rejected as outliers) from 2024/02/06.979 to 2024/02/09.599.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.81 and 1.81 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250805 130500.123 UTC.

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