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214991 (2008 CM21)
Classification: Main-belt Asteroid          SPK-ID: 2214991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1732532278356022 4.7004e-08  
a 2.987398950188038 3.3577e-08 au
q 2.469822439235271 1.5303e-07 au
i 5.824492002123944 6.1068e-06 deg
node 107.0102378262794 6.527e-05 deg
peri 233.0350570501728 6.8767e-05 deg
M 323.5904779094271 2.2865e-05 deg
tp 2459391.243936244360
(2021-Jun-25.74393624)
0.0001209 TDB
period 1885.985124362535
5.16
3.1796e-05
8.705e-08
d
yr
n .190881675231495 3.2181e-09 deg/d
Q 3.504975461140805 3.9394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      5487 days (15.02 yr)  
   first obs. used      2005-06-16  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51965  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:48:55  

Additional Information
 Earth MOID = 1.4645 au 
 Jupiter MOID = 1.89911 au 
 T_jup = 3.227 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457786.5 (2017-Feb-02.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1726495951070224 4.7151e-08  
q 2.470286658402912 1.531e-07 au
tp 2457510.712110798392
(2016-May-02.21211080)
0.00011427 TDB
node 107.010735425194 6.5303e-05 deg
peri 233.6532188989872 6.8827e-05 deg
i 5.823521330285436 6.1082e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      5487 days (15.02 yr)  
   first obs. used      2005-06-16  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51965  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:48:55  

Additional Information
 Jupiter MOID = 1.89911 au 
 T_jup = 3.227 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.223206136892208E-15 -7.11482225482016E-15 1.263987809192405E-12 1.423582605825521E-14 2.442429209479442E-13 -4.309546504588798E-15
q -7.11482225482016E-15 2.344012370768494E-14 -3.491015826813059E-12 -3.558633846075389E-14 -6.58795115051331E-13 1.437551395055558E-14
tp 1.263987809192405E-12 -3.491015826813059E-12 1.305818178675598E-8 1.090385150306723E-10 2.554009403912095E-9 -1.177573007027347E-11
node 1.423582605825521E-14 -3.558633846075389E-14 1.090385150306723E-10 4.264541091145006E-9 -4.220210150121619E-9 -1.584557928859937E-10
peri 2.442429209479442E-13 -6.58795115051331E-13 2.554009403912095E-9 -4.220210150121619E-9 4.737096522898294E-9 1.553695528233917E-10
i -4.309546504588798E-15 1.437551395055558E-14 -1.177573007027347E-11 -1.584557928859937E-10 1.553695528233917E-10 3.731029265511281E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.32   n/a E2021B55  

214991 (2008 CM21)          Discovered 2008-Feb-07 by Ries, W. at Altschwendt
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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Alternate Designations
 2008 CM21 = 2005 MS6 = 2006 WM7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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