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78431 Kemble (2002 QJ50)
Classification: Main-belt Asteroid          SPK-ID: 2078431
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1504322491074757 4.2299e-08  
a 2.442844926874401 1.2388e-08 au
q 2.075362270303898 1.0667e-07 au
i 2.995803396988669 4.3995e-06 deg
node 226.7860766521497 9.7904e-05 deg
peri 356.5221207513565 9.9361e-05 deg
M 328.2559084446073 1.8971e-05 deg
tp 2459123.470992163227
(2020-Sep-30.97099216)		 7.3841e-05 TDB
period 1394.576282062203
3.82		 1.0609e-05
2.905e-08		 d
yr
n .2581429245789673 1.9637e-09 deg/d
Q 2.810327583444904 1.4252e-08 au
   Orbit Determination Parameters
   # obs. used (total)      380  
   data-arc span      10448 days (28.61 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:53  

Additional Information
 Earth MOID = 1.06655 au 
 Jupiter MOID = 2.16938 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457132.5 (2015-Apr-20.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1512006499386431 4.2196e-08  
q 2.073070616798961 1.0644e-07 au
tp 2457728.374463548803
(2016-Dec-05.87446355)		 7.0228e-05 TDB
node 226.8431833138454 9.7971e-05 deg
peri 356.4800672991086 9.9422e-05 deg
i 2.994690064571829 4.3991e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      380  
   data-arc span      10448 days (28.61 yr)  
   first obs. used      1991-10-13  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:53  

Additional Information
 Jupiter MOID = 2.16938 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.780475137732167E-15 -4.470981776952566E-15 -3.895074490977497E-13 4.52295373074012E-15 -3.530437881078117E-14 -7.448906805658661E-16
q -4.470981776952566E-15 1.13286153810084E-14 1.132468005144103E-12 -8.085332844023056E-15 1.106578959068211E-13 2.082680408596615E-15
tp -3.895074490977497E-13 1.132468005144103E-12 4.932019092466076E-9 4.745818485942601E-12 1.211656966600195E-9 2.727866622018054E-12
node 4.52295373074012E-15 -8.085332844023056E-15 4.745818485942601E-12 9.598358975146706E-9 -9.583569468650541E-9 7.814186643987798E-12
peri -3.530437881078117E-14 1.106578959068211E-13 1.211656966600195E-9 -9.583569468650541E-9 9.884709282169335E-9 -7.179389357008049E-12
i -7.448906805658661E-16 2.082680408596615E-15 2.727866622018054E-12 7.814186643987798E-12 -7.179389357008049E-12 1.935190463444862E-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 16.6   n/a MPO417367  

78431 Kemble           Discovered 2002 Aug. 16 by A. Lowe on images taken at Palomar.
Lucian J. Kemble (1922-1999) was a Franciscan Father ordained in 1953. Multi-talented, he was an avid amateur astronomer with a particular interest in deep-sky observing. In 1980, he drew attention to a chain of stars in the constellation of Camelopardalis that is now known as Kemble's Cascade.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

Alternate Designations
 2002 QJ50 = 1999 YC2 = 2001 EY26 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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