Asteroids

294739 2008CM help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.927

Aphelion (Q)

2.205

Eccentricity (e)

0.408

Inclination (i)

36.0

deg

Orbit period (P)

715.7

Earth MOID

0.04374

U parameter

0.0

Next Earth close approach

Date

2063-01-06

Nominal distance (from Earth center)

0.17656

26413281

Maximum Brightness

15.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

880

Taxonomic type

Rotation period (T)

3.054

Discovery Information

Discovery Date

2008-02-02

Observatory

Catalina Sky 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

1.565935

1-sigma variation

3.607E-9

Unit

Eccentricity (e)

Value

0.408011

1-sigma variation

1.460E-8

Unit

Inclination (i)

Value

36.0154

1-sigma variation

3.523E-6

Unit

Long. of Ascending Node (Ω)

Value

279.5399

1-sigma variation

5.519E-7

Unit

Arg. of Perihelion (ω)

Value

130.6973

1-sigma variation

4.199E-6

Unit

Mean Anomaly (M)

Value

38.04334

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.927016

1-sigma variation

Unit

Aphelion distance

Value

2.204854

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.760166

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.047434

1-sigma variation

Unit

MOID

Value

0.043736

1-sigma variation

Unit

Orbit Period

Value

715.7463

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.30133E-17	-9.29897E-18	-4.46962E-17	-2.18413E-16	4.22618E-15	-2.45170E-14
e	-9.29897E-18	2.13233E-16	-4.69404E-16	6.44149E-15	-2.11319E-14	1.95343E-14
i	-4.46962E-17	-4.69404E-16	1.24099E-11	-6.02516E-13	2.24817E-12	-3.51834E-13
Ω	-2.18413E-16	6.44149E-15	-6.02516E-13	3.04559E-13	2.77020E-13	1.24219E-13
ω	4.22618E-15	-2.11319E-14	2.24817E-12	2.77020E-13	1.76306E-11	-1.33934E-11
M	-2.45170E-14	1.95343E-14	-3.51834E-13	1.24219E-13	-1.33934E-11	4.81047E-11

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

3.054

Unit

Source

[4]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.48

Unit

mag

Source

[4]

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

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.003

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.394

0.427

0.36

Unit

Source

[6]

[8]

[7]

Diameter

Value

880

Unit

Source

[6]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.1967

0.0347

-0.162

0.747

0.359

0.47

Unit

r-i

r-z

i-z

B-V

R-I

V-R

Source

[2]

[9]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[10]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Warner, B.D. et al. (2014) MPB 41, 157-168. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 JANUARY-MARCH) (1943,4055,4954,25916,35107,40267,53435, 68031,85990,86039,138127,143409,243566,275677,277570,294739, 357622,377097,1995CR,2006DP14,2009CT,2009QF31,2011BT15, 2012AU10,2013XV8,2013YZ13,2013PD21,2013XF22,2013YZ37, 2013WT44,2014CR,2014EM,2014BR8,2014CG13,2014CU13,2014EY24, 2014AY28,2014EL45,2014BR57,2014DX110) 2.) Benishek, V. (2016) MPB 43, 186-188. (PHOTOMETRIC OBSERVATIONS AND LIGHTCURVE ANALYSIS FOR ASTEROIDS 782 MONTEFIORE,(294739) 2008 CM, AND (303142) 2004 DU24) 3.) Warner, B.D. (2016) MPB 43, 143-154. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 OCTOBER-DECEMBER)(36NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[7]	EARN	1.) Nugent, C.R. et al. (2016) Astron. J. 152_63 (12pp) (NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos) (207 NEOs)
[8]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[9]	EARN	1.) Lin, C-H. et al. (2018) P&SS 152, 116-135. (Photometric survey and taxonomic identifications of 92 near-Earth asteroids)
[10]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

6386

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.481818

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-02-02.08501

Unit

Source

[2]

Last Observation

Value

2025-07-27.589194

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1830 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-12-27

Unit

Source

[3]

Last Observation

Value

2015-12-31

Unit

Source

[3]

Delay (Discarded)

Value

7 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

8 (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 294739 2008CM 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	1965-01-04 05:29	< 1 min	0.1426814	0.1426783	0.0000010
EARTH	1966-12-25 21:00	< 1 min	0.1176156	0.1176127	0.0000010
EARTH	2015-12-29 00:18	< 1 s	0.0584603	0.0584603	0.0000000
EARTH	2063-01-06 05:11	< 1 min	0.1765619	0.1765589	0.0000010
EARTH	2064-12-26 13:54	< 1 min	0.0944247	0.0944219	0.0000009
EARTH	2112-01-03 04:22	< 1 min	0.0784054	0.0784038	0.0000005
EARTH	2113-12-23 20:11	< 1 min	0.1938254	0.1938236	0.0000006

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
31.98699776	356.06159035	0.04369290	MINIMUM
288.07111859	206.48710273	0.53024603	MINIMUM
327.85277100	259.50471987	0.62172701	SADDLE
162.20451123	121.40717456	1.40786509	SADDLE
347.39530007	114.20133452	1.86771271	SADDLE
187.18750706	318.38246033	3.12589789	MAXIMUM

Download:

MOID Plots

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