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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1101632264921931 3.3811e-08  
a 2.482107015961025 7.3398e-09 au
q 2.208670098583849 8.2399e-08 au
i 2.014290185320253 3.9078e-06 deg
node 2.6149085250377 7.7739e-05 deg
peri 155.9524707406975 7.9267e-05 deg
M 53.164610114927 1.4738e-05 deg
tp 2459185.564676837183
(2020-Dec-02.06467684)
5.8386e-05 TDB
period 1428.332045969303
3.91
6.3355e-06
1.735e-08
d
yr
n .2520422341681025 1.118e-09 deg/d
Q 2.755543933338201 8.1484e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2037  
   data-arc span      22176 days (60.71 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45928  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:42:46  

Additional Information
 Earth MOID = 1.21853 au 
 Jupiter MOID = 2.2221 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 14.99   n/a E2021B10  
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. 2020-October); 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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