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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 ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1504252198003435 4.2321e-08  
a 2.44280057934194 1.2251e-08 au
q 2.075341765266022 1.0666e-07 au
i 2.995799383827821 4.3995e-06 deg
node 226.7842194320709 9.7905e-05 deg
peri 356.5631792109127 9.9362e-05 deg
M 19.85574653425292 1.9119e-05 deg
tp 2459123.584446820594
(2020-Oct-01.08444682)
7.3845e-05 TDB
period 1394.538306420216
3.82
1.0491e-05
2.872e-08
d
yr
n .2581499542483857 1.942e-09 deg/d
Q 2.810259393417858 1.4094e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6013  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:36:45  

Additional Information
 Earth MOID = 1.06535 au 
 Jupiter MOID = 2.16835 au 
 T_jup = 3.483 
[ 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 16.74   n/a E2021B10  

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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