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48449 (1991 EK4)
Classification: Main-belt Asteroid          SPK-ID: 2048449
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07991897408136112 8.5278e-08  
a 2.148729213785691 1.63e-08 AU
q 1.977004979441289 1.9108e-07 AU
i 2.835817571421616 7.7149e-06 deg
node 185.7723389883006 9.6295e-05 deg
peri 38.20482745968561 0.00010414 deg
M 78.20122933033059 4.2383e-05 deg
tp 2456550.590918076661
(2013-Sep-15.09091808)
0.00013456 JED
period 1150.45850637936
3.15
1.3091e-05
3.584e-08
d
yr
n .3129187171929965 3.5606e-09 deg/d
Q 2.320453448130093 1.7602e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1991-03-12  
   last obs. used      2013-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56511  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 04:02:26  

Additional Information
 Earth MOID = .969149 AU 
 T_jup = 3.701 
[ 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 15.0 mag n/a MPO263742  

48449 (1991 EK4)          Discovered 1991-Mar-12 by Debehogne, H. at La Silla (809)
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 EK4 = 1998 OF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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