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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3593161305411853 9.5549e-08  
a 2.370233438394983 1.412e-08 au
q 1.518570330831569 2.2735e-07 au
i 22.37986607937698 1.7917e-05 deg
node .7088429816441976 1.9901e-05 deg
peri 60.07329593458792 2.9528e-05 deg
M 234.8735973886357 2.2183e-05 deg
tp 2458063.767214200249
(2017-Nov-06.26721420)
8.5219e-05 JED
period 1332.861759241072
3.65
1.191e-05
3.261e-08
d
yr
n .2700955275399177 2.4135e-09 deg/d
Q 3.221896545958397 1.9193e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      16127 days (44.15 yr)  
   first obs. used      1971-03-24  
   last obs. used      2015-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52236  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:55:24  

Additional Information
 Earth MOID = .625275 au 
 Jupiter MOID = 2.55991 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 MPO337310  
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
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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