Asteroids

2008CM74 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.932

Aphelion (Q)

1.257

Eccentricity (e)

0.148

Inclination (i)

0.9

deg

Orbit period (P)

418.3

Earth MOID

0.00365

U parameter

6.9

Next Earth close approach

Date

2033-07-07

Nominal distance (from Earth center)

0.11319

16932336

Maximum Brightness

26.5

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

28.3

mag

Diameter

6 - 13*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2008-02-08

Observatory

Mt. Lemmon Survey

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

1.094657

1-sigma variation

0.000106

Unit

Eccentricity (e)

Value

0.148246

1-sigma variation

0.000441

Unit

Inclination (i)

Value

0.9366

1-sigma variation

0.1956

Unit

Long. of Ascending Node (Ω)

Value

316.3348

1-sigma variation

10.6417

Unit

Arg. of Perihelion (ω)

Value

249.4760

1-sigma variation

10.6504

Unit

Mean Anomaly (M)

Value

180.20210

1-sigma variation

1.20869

Unit

Perihelion distance

Value

0.932378

1-sigma variation

Unit

Aphelion distance

Value

1.256935

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.114709

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.030843

1-sigma variation

Unit

MOID

Value

0.003647

1-sigma variation

Unit

Orbit Period

Value

418.3265

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.11825E-8	-4.66483E-8	2.06856E-5	-1.12533E-3	1.12625E-3	1.27815E-4
e	-4.66483E-8	1.94598E-7	-8.62915E-5	4.69439E-3	-4.69823E-3	-5.33190E-4
i	2.06856E-5	-8.62915E-5	3.82649E-2	-2.08167E0	2.08337E0	2.36437E-1
Ω	-1.12533E-3	4.69439E-3	-2.08167E0	1.13246E2	-1.13339E2	-1.28625E1
ω	1.12625E-3	-4.69823E-3	2.08337E0	-1.13339E2	1.13431E2	1.28730E1
M	1.27815E-4	-5.33190E-4	2.36437E-1	-1.28625E1	1.28730E1	1.46093E0

Date of computation: 2025-11-24 16:53 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

28.334

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

6 - 13*

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

6575

Unit

Source

[1]

Normalized RMS of residuals

Value

0.491607

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-02-08.36778

Unit

Source

[2]

Last Observation

Value

2008-02-15.20297

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

17 (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 2008CM74 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	1951-02-10 05:13	> 1 mo	0.0568074	0.0015849	1.3825676
EARTH	1958-02-11 14:16	> 1 mo	0.0378228	0.0013828	0.3638407
EARTH	1965-02-01 11:58	> 1 w	0.1926622	0.0022854	0.2445794
EARTH	1987-06-26 01:36	> 1 w	0.0661828	0.0133317	0.2670524
EARTH	1994-06-17 01:54	> 1 d	0.0143281	0.0133225	0.0042295
EARTH	2001-04-12 23:10	> 1 w	0.0679416	0.0662228	0.0005802
EARTH	2001-07-12 00:18	> 1 w	0.1421734	0.1197622	0.0074974
EARTH	2008-02-15 08:42	< 1 min	0.0063573	0.0063369	0.0000068
EARTH	2025-06-28 10:36	> 1 d	0.0145192	0.0108405	0.0151668
EARTH	2033-07-07 00:08	1243.5	0.1131857	0.0653945	0.0159629
EARTH	2056-02-12 08:44	> 1 d	0.0764702	0.0128688	0.0288057
EARTH	2064-02-17 18:44	573.6	0.0133457	0.0122928	0.0018500
EARTH	2073-07-05 22:23	> 1 d	0.0312500	0.0084261	0.0634039
EARTH	2081-03-03 03:59	> 1 mo	0.0370716	0.0027130	0.2858575
EARTH	2081-09-01 02:35	> 1 mo	0.1949619	0.0113219	0.1349936
EARTH	2089-02-10 21:27	> 1 w	0.1101619	0.0028630	0.5938246
EARTH	2106-07-10 11:22	> 1 mo	0.0830113	0.0087897	1.5030802
EARTH	2113-12-21 17:02	> 1 mo	0.1942224	0.0392404	0.0722060
EARTH	2114-06-20 20:49	> 1 mo	0.0388094	0.0083520	0.1273756
EARTH	2122-02-21 12:52	> 1 mo	0.0070098	0.0045094	1.2260327

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
310.36033803	47.30162720	0.00364667	MINIMUM
62.23483558	174.46680724	0.01090504	MINIMUM
6.97160120	111.60353181	0.07527830	SADDLE
185.04092398	289.58805976	0.26187403	SADDLE
6.59663328	291.17807219	1.92772618	SADDLE
184.98692470	109.55030708	2.26265995	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2008CM74

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2065-07-02.625	75468.625	0.506	0.49 ± 0.110	1.74E7	1.17E-7	1.33E-2	-8.51
2079-02-19.649	80448.649	-1.240	2.22 ± 0.032	1.01E8	7.04E-9	1.33E-2	-9.87
2087-06-24.840	83495.840	0.381	2.78 ± 0.011	5.96E6	1.14E-7	1.32E-2	-8.71
2091-07-03.146	84965.146	-0.130	1.86 ± 0.008	3.06E7	6.53E-8	1.33E-2	-8.98
2091-07-03.435	84965.435	0.376	2.73 ± 0.010	1.39E6	7.46E-7	1.33E-2	-7.92
2092-07-06.096	85334.096	0.375	2.26 ± 0.010	1.94E7	7.30E-8	1.33E-2	-8.94
2097-07-14.862	87168.862	-1.088	1.37 ± 0.152	6.66E6	1.87E-7	1.33E-2	-8.56
2101-06-26.822	88610.822	-0.770	2.39 ± 0.002	3.80E7	2.66E-8	1.33E-2	-9.43
2110-07-03.257	91904.257	1.097	1.33 ± 0.011	2.84E8	4.00E-9	1.33E-2	-10.30
2111-07-08.676	92274.676	0.375	1.72 ± 0.014	5.01E7	3.53E-8	1.33E-2	-9.36
2113-07-16.760	93013.760	-1.089	1.32 ± 0.134	1.61E8	7.50E-9	1.33E-2	-10.04
2115-02-07.147	93584.147	-1.043	2.82 ± 0.297	6.69E6	1.88E-7	1.33E-2	-8.65
2116-02-06.681	93948.681	-1.043	1.99 ± 0.000	2.46E9	5.49E-10	1.33E-2	-11.19
2121-07-07.892	95926.892	0.375	1.49 ± 0.000	8.00E8	2.36E-9	1.33E-2	-10.58


Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/02/08.368 to 2008/02/15.203.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.92 and 2.92 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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