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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3591759145490305 1.57e-07  
a 2.371036805222001 1.5499e-08 AU
q 1.519417492276977 3.683e-07 AU
i 22.37241996467131 2.0951e-05 deg
node .7270079454277384 2.6154e-05 deg
peri 60.12664492674357 4.2591e-05 deg
M 270.7234559105012 2.1985e-05 deg
tp 2456731.204983645315
(2014-Mar-14.70498365)		 8.2481e-05 JED
period 1333.539456824889
3.65		 1.3076e-05
3.58e-08		 d
yr
n .2699582664446596 2.647e-09 deg/d
Q 3.222656118167025 2.1066e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      15370 days (42.08 yr)  
   first obs. used      1971-03-24  
   last obs. used      2013-04-22  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .56397  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:22:24  

Additional Information
 Earth MOID = .626856 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 14.3 mag n/a PDS3 (MPC 28115)  
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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