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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649525537655997 5.6751e-08  
a 3.19185401757407 3.4662e-08 AU
q 2.665349546128237 1.7897e-07 AU
i 7.670957996138245 6.4421e-06 deg
node 256.3750576790457 6.05e-05 deg
peri 24.95055056171954 6.5184e-05 deg
M 77.33825138743279 2.7804e-05 deg
tp 2456553.039395527076
(2013-Sep-17.53939553)
0.0001578 JED
period 2082.873800744202
5.70
3.3928e-05
9.289e-08
d
yr
n .1728381238802723 2.8154e-09 deg/d
Q 3.718358489019901 4.0379e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1114  
   data-arc span      9875 days (27.04 yr)  
   first obs. used      1988-01-11  
   last obs. used      2015-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .43676  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:11:42  

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 12.3 mag n/a MPO324382  

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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