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300939 (2008 CD138)
Classification: Outer Main-belt Asteroid          SPK-ID: 2300939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03080361384348486 6.4194e-08  
a 3.249576665424022 4.3721e-08 au
q 3.149477960667502 2.1133e-07 au
i 5.406216082156145 5.5093e-06 deg
node 123.0751525684774 7.8158e-05 deg
peri 40.81602021746976 0.00012603 deg
M 30.23382241958057 9.927e-05 deg
tp 2458820.807825086470
(2019-Dec-03.30782509)
0.00059019 TDB
period 2139.629652880925
5.86
4.3181e-05
1.182e-07
d
yr
n .1682534169010392 3.3956e-09 deg/d
Q 3.349675370180543 4.5068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      178  
   data-arc span      6646 days (18.20 yr)  
   first obs. used      2002-02-10  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59228  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:37:56  

Additional Information
 Earth MOID = 2.15994 au 
 Jupiter MOID = 1.63127 au 
 T_jup = 3.174 
[ show covariance matrix ]

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 16.0   n/a MPO427618  

300939 (2008 CD138)          Discovered 2008-Feb-08 by Spacewatch at Kitt Peak
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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