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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099137851464435 1.0344e-07  
a 2.482928590404282 1.9149e-08 AU
q 2.210020510784624 2.4837e-07 AU
i 2.016014814183655 8.6251e-06 deg
node 2.665191292777016 0.00015982 deg
peri 156.3573838305594 0.0001618 deg
M 118.5925223885219 2.4584e-05 deg
tp 2456329.739975886883
(2013-Feb-06.23997589)
9.6796e-05 JED
period 1429.041268938595
3.91
1.6531e-05
4.526e-08
d
yr
n .2519171474084763 2.9142e-09 deg/d
Q 2.75583667002394 2.1253e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      19641 days (53.77 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51346  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:27:43  

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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