Asteroids

2024CH help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.421

Aphelion (Q)

1.116

Eccentricity (e)

0.452

Inclination (i)

37.8

deg

Orbit period (P)

246.1

Earth MOID

0.00543

U parameter

6.8

Next Earth close approach

Date

2026-02-05

Nominal distance (from Earth center)

0.10986

16435018

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-02-03

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.768544

1-sigma variation

0.000046

Unit

Eccentricity (e)

Value

0.452232

1-sigma variation

0.000058

Unit

Inclination (i)

Value

37.7522

1-sigma variation

0.0189

Unit

Long. of Ascending Node (Ω)

Value

315.7025

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

328.1903

1-sigma variation

0.0106

Unit

Mean Anomaly (M)

Value

127.38793

1-sigma variation

0.06013

Unit

Perihelion distance

Value

0.420983

1-sigma variation

Unit

Aphelion distance

Value

1.116104

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.573396

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.006479

1-sigma variation

Unit

MOID

Value

0.005433

1-sigma variation

Unit

Orbit Period

Value

246.0942

1-sigma variation

Unit

U parameter

Value

6.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.14171E-9	2.67615E-9	8.76077E-7	3.39323E-9	-4.88389E-7	-2.78253E-6
e	2.67615E-9	3.35345E-9	1.09542E-6	4.22232E-9	-6.10628E-7	-3.47510E-6
i	8.76077E-7	1.09542E-6	3.58486E-4	1.38808E-6	-1.99802E-4	-1.13808E-3
Ω	3.39323E-9	4.22232E-9	1.38808E-6	5.45247E-9	-7.73002E-7	-4.41210E-6
ω	-4.88389E-7	-6.10628E-7	-1.99802E-4	-7.73002E-7	1.11385E-4	6.34451E-4
M	-2.78253E-6	-3.47510E-6	-1.13808E-3	-4.41210E-6	6.34451E-4	3.61544E-3

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

25.836

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

18 - 40*

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

641

Unit

Source

[1]

Normalized RMS of residuals

Value

0.52115

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-02-03.52577

Unit

Source

[2]

Last Observation

Value

2024-02-04.90491

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

31 (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

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 2024CH 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	1962-02-03 08:08	> 1 d	0.0896694	0.0070848	0.0916842
EARTH	1964-02-05 13:02	> 1 d	0.0186659	0.0055569	0.1441294
EARTH	1966-02-05 05:22	> 1 d	0.1306385	0.0164965	0.1414853
MERCURY	1976-06-14 08:30	> 1 w	0.0490514	0.0003669	0.2200287
MERCURY	1979-10-28 17:41	> 1 d	0.0434328	0.0007719	0.1997051
MERCURY	1983-03-13 04:04	> 1 d	0.0393899	0.0010436	0.1758273
MERCURY	1986-07-26 14:17	> 1 d	0.0351762	0.0012864	0.1483107
MERCURY	1989-12-09 00:22	> 1 d	0.0307406	0.0014349	0.1166742
EARTH	1991-02-02 05:09	> 1 d	0.1531464	0.0090446	0.0601636
EARTH	1993-02-04 06:38	962.6	0.0333130	0.0053679	0.0458068
MERCURY	1993-04-23 06:52	> 1 d	0.0218355	0.0016047	0.0787291
EARTH	1995-02-05 18:02	35.2	0.0796317	0.0151801	0.0235644
MERCURY	1996-09-05 02:25	803.5	0.0022481	0.0021231	0.0048910
EARTH	1997-02-04 08:11	213.2	0.1880794	0.1641285	0.0079982
MERCURY	2000-01-19 04:36	918.0	0.0121315	0.0021340	0.0165966
MERCURY	2003-06-03 07:53	870.0	0.0231835	0.0017094	0.0155198
MERCURY	2006-10-16 09:59	774.3	0.0352321	0.0009351	0.0134781
MERCURY	2010-02-28 13:25	652.1	0.0455288	0.0121727	0.0111187
EARTH	2022-02-03 01:19	34.9	0.1156926	0.1127626	0.0009767
EARTH	2024-02-05 14:51	< 1 s	0.0058976	0.0058902	0.0000025
EARTH	2026-02-05 14:20	< 1 min	0.1098613	0.1071066	0.0009184
EARTH	2053-02-03 03:30	415.7	0.1062055	0.0668855	0.0131361
EARTH	2055-02-05 14:02	208.7	0.0095105	0.0061574	0.0102045
EARTH	2057-02-05 08:33	93.8	0.1300727	0.1023933	0.0092541
EARTH	2080-02-02 14:29	1192.6	0.1634259	0.0669747	0.0322659
EARTH	2082-02-04 21:55	782.1	0.0347699	0.0066598	0.0343371
EARTH	2084-02-06 09:28	25.9	0.0860918	0.0098842	0.0316482
EARTH	2109-02-03 20:13	73.2	0.1302028	0.1239703	0.0020789
EARTH	2111-02-06 16:13	90.6	0.0093622	0.0064933	0.0035798
EARTH	2113-02-06 17:58	15.4	0.0989655	0.0779336	0.0070271

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
230.20964216	33.18841403	0.00559329	MINIMUM
38.57206042	237.53602787	0.55057858	MINIMUM
96.31278808	305.37413444	0.60692524	SADDLE
331.32401914	138.03928489	0.69735077	SADDLE
344.04363176	341.52062085	1.37481962	SADDLE
188.33834024	191.61467146	2.10783844	MAXIMUM

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MOID Plots

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