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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199301536082582 6.3451e-08  
a 2.3172041649253 1.2951e-08 au
q 2.039301513484113 1.4392e-07 au
i 3.973102619406546 6.9749e-06 deg
node 196.4869137945023 7.357e-05 deg
peri 224.3832393686437 7.7525e-05 deg
M 285.7881270940425 2.5102e-05 deg
tp 2457866.092476726855
(2017-Apr-22.59247673)
9.037e-05 JED
period 1288.382678912181
3.53
1.0801e-05
2.957e-08
d
yr
n .2794200868207561 2.3425e-09 deg/d
Q 2.595106816366487 1.4504e-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 = 1.05231 au 
 Jupiter MOID = 2.6994 au 
 T_jup = 3.567 
[ 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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