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78431 Kemble (2002 QJ50)
Classification: Main-belt Asteroid          SPK-ID: 2078431
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511249784149482 8.392e-08  
a 2.442499660726449 2.4129e-08 AU
q 2.073376952220646 2.0549e-07 AU
i 2.994562024417332 9.1345e-06 deg
node 226.8428878893734 0.00013918 deg
peri 356.4972176937671 0.00014107 deg
M 172.0255573408885 2.5815e-05 deg
tp 2456334.244713869806
9.5949e-05 JED
period 1394.280633147874
n .2581976622505516 3.826e-09 deg/d
Q 2.811622369232252 2.7775e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      8488 days (23.24 yr)  
   first obs. used      1991-10-13  
   last obs. used      2015-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62639  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 16:07:14  

Additional Information
 Earth MOID = 1.06612 AU 
 T_jup = 3.483 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7 mag n/a MPO266288  

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 | Physical Parameters | Discovery Circumstances ]
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