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JPL Small-Body Database Browser
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13766 Bonham (1998 SA139)
Classification: Main-belt Asteroid          SPK-ID: 2013766
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722537535054401 3.1779e-08  
a 2.282808058772568 8.4912e-09 au
q 1.889585802116526 7.4256e-08 au
i 3.734843836060256 3.7194e-06 deg
node 336.6665118252098 5.295e-05 deg
peri 325.0600929002953 5.4076e-05 deg
M 46.39605647223819 1.0706e-05 deg
tp 2458438.139234592566
(2018-Nov-15.63923459)
3.7432e-05 TDB
period 1259.802664083116
3.45
7.029e-06
1.924e-08
d
yr
n .2857590400969726 1.5944e-09 deg/d
Q 2.676030315428611 9.9538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1622  
   data-arc span      10835 days (29.66 yr)  
   first obs. used      1990-03-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4879  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:44:36  

Additional Information
 Earth MOID = .874945 au 
 Jupiter MOID = 2.54688 au 
 T_jup = 3.582 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO358764  

13766 Bonham           Discovered 1998 Sept. 26 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Dan Bonham mentored a finalist in the 2002 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the Hillsboro High School, Hillsboro, North Dakota.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021021/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 SA139 = 1990 EG4 = 1991 RW8 = 1997 ES50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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