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6312 Robheinlein (1990 RH4)
Classification: Main-belt Asteroid          SPK-ID: 2006312
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06984869988609638 4.6065e-08  
a 2.183612560959005 1.0327e-08 au
q 2.031090062521069 9.9289e-08 au
i 4.11597005456836 5.1846e-06 deg
node 157.2526262711426 6.9533e-05 deg
peri 282.9188333061141 8.0355e-05 deg
M 230.2657082327132 4.0213e-05 deg
tp 2457825.231124255063
(2017-Mar-12.73112425)
0.00013214 JED
period 1178.587423948754
3.23
8.361e-06
2.289e-08
d
yr
n .3054503999320233 2.1669e-09 deg/d
Q 2.336135059396941 1.1048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      12258 days (33.56 yr)  
   first obs. used      1982-01-21  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49024  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:18:47  

Additional Information
 Earth MOID = 1.05083 au 
 Jupiter MOID = 2.79454 au 
 T_jup = 3.672 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO344352  

6312 Robheinlein           Discovered 1990 Sept. 14 by H. E. Holt at Palomar.
Missouri-born Robert A. Heinlein (1907-1988) was one of the most influential authors of science fiction. His By His Bootstraps (1941) is considered to be one of the best science-fiction stories ever published, exploring some of the inherent paradoxes that would be caused by time travel. The name was suggested by J. Meeus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1990 RH4 = 1982 BW2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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