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13959 (1991 EL4)
Classification: Main-belt Asteroid          SPK-ID: 2013959
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689485032425247 5.0562e-08  
a 2.671816091972502 1.9258e-08 AU
q 2.220416762294457 1.3829e-07 AU
i 12.83876502482527 7.0685e-06 deg
node 181.4164284716936 2.5821e-05 deg
peri 86.12665759247463 3.4509e-05 deg
M 82.01831145029993 2.2915e-05 deg
tp 2456637.073499720946
(2013-Dec-10.57349972)
0.00010031 JED
period 1595.174757770279
4.37
1.7247e-05
4.722e-08
d
yr
n .2256806022327013 2.44e-09 deg/d
Q 3.123215421650548 2.2512e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      8548 days (23.40 yr)  
   first obs. used      1991-03-12  
   last obs. used      2014-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:23:24  

Additional Information
 Earth MOID = 1.25156 AU 
 T_jup = 3.325 
[ 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 13.1 mag n/a MPO302152  

13959 (1991 EL4)          Discovered 1991-Mar-12 by Debehogne, H. at La Silla (809)
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 EL4 = 1992 PA3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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