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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104015606378002 3.5931e-08  
a 2.482709001760249 8.6743e-09 au
q 2.208614053356403 8.9273e-08 au
i 2.01413128333733 4.0139e-06 deg
node 2.618408626053645 9.2356e-05 deg
peri 156.0346837262942 9.3767e-05 deg
M 313.3044197817017 1.6237e-05 deg
tp 2459185.836275215543
(2020-Dec-02.33627522)
6.4727e-05 TDB
period 1428.851697862612
3.91
7.4884e-06
2.05e-08
d
yr
n .2519505701945949 1.3204e-09 deg/d
Q 2.756803950164096 9.6319e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1640  
   data-arc span      21755 days (59.56 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:40:38  

Additional Information
 Earth MOID = 1.21767 au 
 Jupiter MOID = 2.22235 au 
 T_jup = 3.468 
[ 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 15.0   n/a MPO358747  
diameter diameter 6.129 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 66.830 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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