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12140 Johnbolton (4087 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012140
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099138227919598 1.3134e-07  
a 2.482928593974532 1.4849e-08 AU
q 2.210020420491325 3.2061e-07 AU
i 2.016026736358299 9.9361e-06 deg
node 2.665248245255711 0.00016622 deg
peri 156.3573284949762 0.00016949 deg
M 118.5925235137629 2.9873e-05 deg
tp 2456329.739970404801
(2013-Feb-06.23997040)
0.00011817 JED
period 1429.041272020862
3.91
1.282e-05
3.51e-08
d
yr
n .2519171468651217 2.2599e-09 deg/d
Q 2.755836767457738 1.6482e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      751  
   data-arc span      19262 days (52.74 yr)  
   first obs. used      1960-09-24  
   last obs. used      2013-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5382  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 17:02:06  

Additional Information
 Earth MOID = 1.2193 AU 
 T_jup = 3.468 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8 mag n/a PDS3 (MPC 36312)  

12140 Johnbolton           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
John G. Bolton (1922-1993) was a pioneer radio astronomer in Australia who used interferometry with direct and sea-reflected signals to identify the first radio sources with optical objects. He directed two major radio observatories.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

Alternate Designations
 4087 P-L = 1993 BJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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