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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689485180834809 4.3381e-08  
a 2.671816085615984 1.5629e-08 AU
q 2.220416717359557 1.1368e-07 AU
i 12.83876566439752 6.8178e-06 deg
node 181.4164390282972 2.0494e-05 deg
peri 86.12664599838085 3.0712e-05 deg
M 82.01831563999184 2.148e-05 deg
tp 2456637.073482453192
(2013-Dec-10.57348245)
9.4689e-05 JED
period 1595.174752077658
4.37
1.3997e-05
3.832e-08
d
yr
n .2256806030380765 1.9803e-09 deg/d
Q 3.123215453872411 1.827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1124  
   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      .49955  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:21:52  

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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