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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689485182362404 4.3379e-08  
a 2.671816085541889 1.5628e-08 AU
q 2.220416716889835 1.1367e-07 AU
i 12.83876568593516 6.8178e-06 deg
node 181.41643936 2.049e-05 deg
peri 86.12664567053632 3.0708e-05 deg
M 82.01831568285471 2.148e-05 deg
tp 2456637.073482278382
(2013-Dec-10.57348228)
9.4688e-05 JED
period 1595.174752011302
4.37
1.3996e-05
3.832e-08
d
yr
n .2256806030474643 1.9801e-09 deg/d
Q 3.123215454193944 1.8268e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      8688 days (23.79 yr)  
   first obs. used      1991-03-12  
   last obs. used      2014-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4974  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:36:57  

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
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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