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91238 (1999 CB9)
Classification: Main-belt Asteroid          SPK-ID: 2091238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090445167987018 4.2097e-08  
a 2.20551770071524 7.7922e-09 au
q 1.965018088749762 9.5376e-08 au
i 3.72639993749739 4.5153e-06 deg
node 34.81878545348611 5.8103e-05 deg
peri 5.346755273450898 6.1141e-05 deg
M 271.9269770445017 1.8584e-05 deg
tp 2459293.187820407380
(2021-Mar-19.68782041)
6.2034e-05 TDB
period 1196.366512818539
3.28
6.3403e-06
1.736e-08
d
yr
n .3009111306132016 1.5947e-09 deg/d
Q 2.446017312680717 8.642e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      7840 days (21.46 yr)  
   first obs. used      1999-02-12  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53389  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:16:37  

Additional Information
 Earth MOID = .972839 au 
 Jupiter MOID = 2.89942 au 
 T_jup = 3.651 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO333564  

91238 (1999 CB9)          Discovered 1999-Feb-13 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 CB9 = 2001 YQ131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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