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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099857674683884 9.3481e-08  
a 2.48287142001002 1.9138e-08 AU
q 2.209790901354891 2.2218e-07 AU
i 2.016094881695847 7.5626e-06 deg
node 2.661234689465171 0.0001598 deg
peri 156.3921864891009 0.00016126 deg
M 168.9348985671529 2.2733e-05 deg
tp 2456329.926100401823
(2013-Feb-06.42610040)
8.871e-05 JED
period 1428.991912878101
3.91
1.6522e-05
4.523e-08
d
yr
n .2519258483940136 2.9128e-09 deg/d
Q 2.755951938665149 2.1243e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      793  
   data-arc span      19673 days (53.86 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50772  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:19:57  

Additional Information
 Earth MOID = 1.21951 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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