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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12014691935848 6.3422e-08  
a 2.316738928761071 1.3009e-08 AU
q 2.038389883512563 1.4384e-07 AU
i 3.973031869389395 6.975e-06 deg
node 196.4954000741368 7.358e-05 deg
peri 224.4997110688412 7.7525e-05 deg
M 117.9640798745506 2.478e-05 deg
tp 2456578.452477644944
(2013-Oct-12.95247765)
8.8122e-05 JED
period 1287.994686258718
3.53
1.0849e-05
2.97e-08
d
yr
n .2795042587059923 2.3543e-09 deg/d
Q 2.595087974009579 1.4573e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      11842 days (32.42 yr)  
   first obs. used      1983-03-12  
   last obs. used      2015-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52395  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:26:52  

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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