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JPL Small-Body Database Browser
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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090445168563133 4.5199e-08  
a 2.205517700750488 8.0306e-09 au
q 1.965018088654104 1.0144e-07 au
i 3.726402456614008 4.9599e-06 deg
node 34.81878124925589 5.8201e-05 deg
peri 5.346759304030523 6.1339e-05 deg
M 271.9269771902261 1.8698e-05 deg
tp 2459293.187819930119
(2021-Mar-19.68781993)
6.237e-05 TDB
period 1196.366512847219
3.28
6.5342e-06
1.789e-08
d
yr
n .300911130605988 1.6435e-09 deg/d
Q 2.446017312846871 8.9063e-09 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      7410 days (20.29 yr)  
   first obs. used      1999-02-12  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53789  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:26:11  

Additional Information
 Earth MOID = .972839 au 
 Jupiter MOID = 2.89942 au 
 T_jup = 3.651 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456563.5 (2013-Sep-28.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .109176676517029 4.5147e-08  
q 1.964345530950471 1.0138e-07 au
tp 2456901.308808645891
(2014-Aug-31.80880865)
6.1485e-05 TDB
node 34.89940672313394 5.817e-05 deg
peri 5.283515464002603 6.1295e-05 deg
i 3.728019497207991 4.9602e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      979  
   data-arc span      7410 days (20.29 yr)  
   first obs. used      1999-02-12  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53789  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:26:11  

Additional Information
 Jupiter MOID = 2.89942 au 
 T_jup = 3.651 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.038282151857277E-15 -4.56617682092686E-15 -8.646045821238846E-13 -9.621687913440644E-15 -2.80808077517722E-13 -8.85739932591312E-16
q -4.56617682092686E-15 1.027714727223117E-14 1.883631857000859E-12 2.070186331563908E-14 6.096890560904771E-13 2.100672831275817E-15
tp -8.646045821238846E-13 1.883631857000859E-12 3.780420561848273E-9 1.742880350994333E-11 1.198427098014682E-9 -1.733048641255377E-12
node -9.621687913440644E-15 2.070186331563908E-14 1.742880350994333E-11 3.383793251510684E-9 -3.37027070961781E-9 -7.312850601209933E-11
peri -2.80808077517722E-13 6.096890560904771E-13 1.198427098014682E-9 -3.37027070961781E-9 3.757083930176787E-9 7.240251968464238E-11
i -8.85739932591312E-16 2.100672831275817E-15 -1.733048641255377E-12 -7.312850601209933E-11 7.240251968464238E-11 2.460328686513962E-11

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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