Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
13959 (1991 EL4)
Classification: Main-belt Asteroid          SPK-ID: 2013959
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689485060968665 4.4212e-08  
a 2.671816090744897 1.6057e-08 AU
q 2.220416753647977 1.1659e-07 AU
i 12.83876572500764 6.8234e-06 deg
node 181.4164359978126 2.1711e-05 deg
peri 86.12664970107323 3.164e-05 deg
M 82.01831253123011 2.1574e-05 deg
tp 2456637.073495181772
(2013-Dec-10.57349518)
9.5045e-05 JED
period 1595.174756670889
4.37
1.438e-05
3.937e-08
d
yr
n .2256806023882398 2.0345e-09 deg/d
Q 3.123215427841818 1.877e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1056  
   data-arc span      8603 days (23.55 yr)  
   first obs. used      1991-03-12  
   last obs. used      2014-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50583  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:26:29  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-31 18:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin