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118945 Rikhill (2000 WS68)
Classification: Main-belt Asteroid          SPK-ID: 2118945
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB
Reference: MPO169864 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.0539491 n/a  
a 3.1818967 n/a AU
q 3.0102362 n/a AU
i 7.81509 n/a deg
node 58.42457 n/a deg
peri 117.39164 n/a deg
M 107.91164 n/a deg
tp 2454579.0684048
(2008-Apr-22.56840480)		 n/a JED
period 2073.1347819
5.68		 n/a
n/a		 d
yr
n 0.17365007 n/a deg/d
Q 3.3535572 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      166  
   first obs. used      2000-??-??  
   last obs. used      2008-04-05  
   # oppositions      6  
   planetary ephem.      DE403  
   quality code      0  
   fit RMS      0.55  
   data source      MPC:mpu  
   producer      MPC  

Additional Information
 T_jup = 3.182 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a MPC47989  

118945 Rikhill           Discovered 2000 Nov. 29 by D. Healy at Junk Bond Observatory.
"Amateur turned Pro" best describes Rik Hill (b. 1949). Well known among amateur astronomers for his outreach activities, Rik currently works with the Catalina Sky Survey on Arizona's Mt. Lemmon searching for potentially hazardous asteroids. He has seven comet discoveries to his credit.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070106/MPCPages.arcLast Updated: 2007-01-09
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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