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8027 Robertrushworth (1991 PB12)
Classification: Main-belt Asteroid          SPK-ID: 2008027
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .164952561385211 5.7386e-08  
a 3.191854011622467 3.5347e-08 AU
q 2.66534951683768 1.8198e-07 AU
i 7.670958751933441 6.5341e-06 deg
node 256.3750633250947 6.0887e-05 deg
peri 24.95054478159816 6.5548e-05 deg
M 77.33825332390563 2.7919e-05 deg
tp 2456553.039385574625
(2013-Sep-17.53938557)
0.00015836 JED
period 2082.873794918542
5.70
3.4599e-05
9.473e-08
d
yr
n .1728381243636891 2.871e-09 deg/d
Q 3.718358506407254 4.1177e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      9841 days (26.94 yr)  
   first obs. used      1988-01-11  
   last obs. used      2014-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44396  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:23:57  

Additional Information
 Earth MOID = 1.65272 AU 
 T_jup = 3.161 
[ 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 12.2 mag n/a MPO266000  

8027 Robertrushworth           Discovered 1991 Aug. 7 by H. E. Holt at Palomar.
Air Force test pilot Robert Rushworth (1924-1993) was the sixth pilot to fly the X-15 and made a total of 34 flights. One of these flights reached 86800 meters, for which Rushworth received Air Force astronaut wings.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120207/MPCPages.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1991 PB12 = 1974 SG2 = 1988 AN 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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