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9116 Billhamilton (1997 ES40)
Classification: Main-belt Asteroid          SPK-ID: 2009116
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201469475172069 6.601e-08  
a 2.31673893671387 1.5661e-08 AU
q 2.038389825273439 1.4802e-07 AU
i 3.973029803614327 7.381e-06 deg
node 196.495443432805 8.4162e-05 deg
peri 224.4996408449942 9.0316e-05 deg
M 117.9641009132836 2.923e-05 deg
tp 2456578.452400200164
(2013-Oct-12.95240020)
0.00010538 JED
period 1287.994692890775
3.53
1.306e-05
3.576e-08
d
yr
n .2795042572667875 2.8342e-09 deg/d
Q 2.595088048154301 1.7543e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      11310 days (30.97 yr)  
   first obs. used      1983-03-12  
   last obs. used      2014-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54376  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:27:08  

Additional Information
 Earth MOID = 1.05266 AU 
 T_jup = 3.568 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO236445  

9116 Billhamilton           Discovered 1997 Mar. 7 by M. W. Buie at the Anderson Mesa Station of the Lowell Observatory.
William O. Hamilton (b. 1933), professor of physics and astronomy at Louisiana State University, is a pioneer in the development of an observational technique for gravitational radiation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

[ show close-approach data ]
Alternate Designations
 1997 ES40 = 1988 VP6 = 1992 YX 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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