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6585 O'Keefe (1984 SR)
Classification: Mars-crossing Asteroid          SPK-ID: 2006585
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3593226110003384 9.6382e-08  
a 2.370646066252761 1.4205e-08 AU
q 1.518819331969138 2.2923e-07 AU
i 22.37827600139441 2.0224e-05 deg
node .7112993144456606 2.3559e-05 deg
peri 60.13715516766313 3.6241e-05 deg
M 72.71327835556526 2.3019e-05 deg
tp 2456731.216507798281
(2014-Mar-14.71650780)
8.3791e-05 JED
period 1333.209826114233
3.65
1.1983e-05
3.281e-08
d
yr
n .2700250125287888 2.4271e-09 deg/d
Q 3.222472800536385 1.931e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      15643 days (42.83 yr)  
   first obs. used      1971-03-24  
   last obs. used      2014-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54096  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:44:46  

Additional Information
 Earth MOID = .626717 AU 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO265993  
SMASSII spectral type spec_B Sk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

6585 O'Keefe (1984 SR)          Discovered 1984-Sep-26 by Shoemaker, C. S., Shoemaker, E. M. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 SR = 1973 SF = 1973 SR5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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