Asteroids

2024CU help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.968

Aphelion (Q)

2.715

Eccentricity (e)

0.474

Inclination (i)

2.0

deg

Orbit period (P)

912.9

Earth MOID

0.00097

U parameter

5.3

Next Earth close approach

Date

2029-02-10

Nominal distance (from Earth center)

0.00532

796308

Maximum Brightness

19.3

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.3

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-02-05

Observatory

Kitt Peak-Bok

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

1.841754

1-sigma variation

0.000048

Unit

Eccentricity (e)

Value

0.474254

1-sigma variation

0.000014

Unit

Inclination (i)

Value

2.0138

1-sigma variation

4.714E-5

Unit

Long. of Ascending Node (Ω)

Value

320.5320

1-sigma variation

1.208E-5

Unit

Arg. of Perihelion (ω)

Value

198.1689

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

250.31327

1-sigma variation

0.00985

Unit

Perihelion distance

Value

0.968294

1-sigma variation

Unit

Aphelion distance

Value

2.715214

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.584787

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.003337

1-sigma variation

Unit

MOID

Value

0.000966

1-sigma variation

Unit

Orbit Period

Value

912.9478

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.32977E-9	6.79894E-10	2.25763E-9	-1.05635E-10	4.59457E-9	-4.75318E-7
e	6.79894E-10	1.98413E-10	6.58847E-10	-3.08080E-11	1.34102E-9	-1.38712E-7
i	2.25763E-9	6.58847E-10	2.22176E-9	-1.61062E-10	4.51907E-9	-4.60603E-7
Ω	-1.05635E-10	-3.08080E-11	-1.61062E-10	1.45897E-10	-3.25663E-10	2.15429E-8
ω	4.59457E-9	1.34102E-9	4.51907E-9	-3.25663E-10	9.36767E-9	-9.37441E-7
M	-4.75318E-7	-1.38712E-7	-4.60603E-7	2.15429E-8	-9.37441E-7	9.69741E-5

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

26.28

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

15 - 30*

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

497

Unit

Source

[1]

Normalized RMS of residuals

Value

0.50643

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-02-05.195139

Unit

Source

[2]

Last Observation

Value

2024-05-14.205766

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

46 (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 2024CU 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	1960-03-19 12:10	> 1 d	0.0238947	0.0238054	0.0009854
EARTH	1992-03-16 01:03	> 1 d	0.0267137	0.0253251	0.0009467
EARTH	2024-02-11 08:57	< 1 s	0.0046227	0.0046224	0.0000001
EARTH	2029-02-10 14:33	475.8	0.0053230	0.0032888	0.0006834
MARS	2056-09-20 21:02	> 1 w	0.0394733	0.0393933	0.0153047
EARTH	2067-02-03 13:08	> 1 mo	0.0168996	0.0006822	0.3244341
EARTH	2072-03-30 00:43	> 1 mo	0.0348473	0.0238182	1.5803382
EARTH	2120-01-20 02:21	> 1 mo	0.1235103	0.0050535	21.9406605
EARTH	2125-03-15 20:25	> 1 mo	0.0251117	0.0240300	1.9105458

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
348.34457013	36.50914516	0.00083957	MINIMUM
12.70403127	76.64351943	0.02293999	MINIMUM
3.87228086	62.08039576	0.02604330	SADDLE
180.56505292	237.07896791	1.70647341	SADDLE
1.55982577	238.23152686	1.97726272	SADDLE
180.52150523	57.04772784	3.70609278	MAXIMUM

Download:

MOID Plots

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

Level lines of the squared distance function

2024CU

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2079-02-09.274	80438.274	-0.993	0.69 ± 0.032	8.56E6	9.70E-8	2.14E-1	-7.76
2083-02-09.205	81899.205	-4.437	1.23 ± 0.003	1.67E6	4.34E-11	2.15E-1	-11.13
2100-02-09.390	88108.390	2.170	1.56 ± 0.000	4.80E5	1.54E-7	2.15E-1	-7.70
2100-02-09.399	88108.399	-0.084	0.12 ± 0.000	2.22E6	6.51E-7	2.15E-1	-7.08
2100-02-09.446	88108.446	-1.989	1.69 ± 0.001	3.70E5	2.06E-7	2.15E-1	-7.58
2100-02-09.457	88108.457	1.065	0.57 ± 0.000	9.80E4	8.00E-6	2.15E-1	-5.99
2100-02-09.519	88108.519	-0.835	0.56 ± 0.000	2.41E4	4.10E-5	2.15E-1	-5.28
2105-02-08.914	89933.914	-0.293	1.36 ± 0.011	3.47E6	2.72E-7	2.17E-1	-7.48
2105-02-09.157	89934.157	0.629	0.62 ± 0.000	6.17E4	1.81E-5	2.17E-1	-5.66
2106-02-09.544	90299.544	-3.751	1.54 ± 0.000	6.55E3	1.17E-7	2.15E-1	-7.86
2108-02-10.059	91030.059	-2.171	1.23 ± 0.000	1.91E4	5.63E-6	2.15E-1	-6.18
2110-02-09.804	91760.804	0.945	1.12 ± 0.000	2.97E4	2.50E-5	2.16E-1	-5.55
2110-02-09.839	91760.839	3.648	1.25 ± 0.000	2.49E5	5.47E-9	2.16E-1	-9.21
2110-02-09.914	91760.914	-0.939	1.22 ± 0.002	2.08E5	4.47E-6	2.16E-1	-6.29
2110-02-09.946	91760.946	0.248	1.04 ± 0.000	2.05E4	5.63E-5	2.15E-1	-5.19
2111-02-09.633	92125.633	-3.280	1.73 ± 0.000	4.08E4	4.76E-8	2.16E-1	-8.27
2116-02-09.555	93951.555	-3.236	1.14 ± 0.000	3.55E4	2.11E-7	2.17E-1	-7.65
2116-02-09.558	93951.558	-3.231	0.68 ± 0.000	2.90E4	2.50E-7	2.16E-1	-7.58
2116-02-09.604	93951.604	-3.242	0.81 ± 0.000	8.38E4	8.93E-8	2.17E-1	-8.02
2118-02-09.643	94682.643	-0.024	1.69 ± 0.022	5.76E6	9.21E-8	2.16E-1	-8.02
2118-02-09.731	94682.731	-0.004	0.77 ± 0.000	5.44E6	2.42E-7	2.16E-1	-7.60
2118-02-09.769	94682.769	-1.888	1.34 ± 0.000	2.50E5	8.96E-7	2.17E-1	-7.03
2120-02-10.213	95413.213	0.100	0.28 ± 0.000	1.21E6	1.17E-6	2.17E-1	-6.92
2120-02-10.284	95413.284	1.356	0.76 ± 0.000	2.05E4	2.55E-5	2.16E-1	-5.59
2123-02-09.865	96508.865	0.539	1.20 ± 0.000	2.30E6	4.85E-7	2.16E-1	-7.32


Based on 46 optical observations (of which 0 are rejected as outliers) from 2024/02/05.195 to 2024/05/14.206.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.82 and 1.82 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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