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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07006176689014512 4.6566e-08  
a 2.183933082558688 1.3574e-08 AU
q 2.030922872024786 1.0189e-07 AU
i 4.115166869543831 6.3196e-06 deg
node 157.2558195635144 7.0045e-05 deg
peri 283.2056782198969 9.1296e-05 deg
M 46.68658389715035 5.3352e-05 deg
tp 2456647.621288362916
(2013-Dec-21.12128836)
0.00017521 JED
period 1178.846931927905
3.23
1.099e-05
3.009e-08
d
yr
n .3053831589579237 2.8471e-09 deg/d
Q 2.336943293092591 1.4525e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1091  
   data-arc span      11812 days (32.34 yr)  
   first obs. used      1982-01-21  
   last obs. used      2014-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49689  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:34:06  

Additional Information
 Earth MOID = 1.05053 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 14.0 mag n/a MPO279581  

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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