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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649877050913269 7.1439e-08  
a 3.19251817274839 4.8102e-08 AU
q 2.665791925964277 2.4285e-07 AU
i 7.670740440687138 7.7438e-06 deg
node 256.3807109203773 6.185e-05 deg
peri 25.01340665761096 6.6527e-05 deg
M 42.71092272658452 3.0339e-05 deg
tp 2456553.307694983948
(2013-Sep-17.80769498)
0.00017259 JED
period 2083.523935444951
5.70
4.7089e-05
1.289e-07
d
yr
n .172784192144699 3.905e-09 deg/d
Q 3.719244419532503 5.6038e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      9310 days (25.49 yr)  
   first obs. used      1988-01-11  
   last obs. used      2013-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48538  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-19 23:21:42  

Additional Information
 Earth MOID = 1.65129 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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