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 ]  
30942 Helicaon (1994 CX13)
Classification: Jupiter Trojan          SPK-ID: 2030942
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06843617091887148 1.1372e-07  
a 5.166731788772498 1.9758e-07 AU
q 4.813140448984098 6.7395e-07 AU
i 22.9021623172395 1.2854e-05 deg
node 143.6298815063663 2.8262e-05 deg
peri 269.2108391629886 0.00010386 deg
M 11.07414381475241 9.7061e-05 deg
tp 2456668.543751116313
(2014-Jan-11.04375112)
0.0011558 JED
period 4289.654387081786
11.74
0.00024606
6.737e-07
d
yr
n .08392284494623467 4.8139e-09 deg/d
Q 5.520323128560899 2.111e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      7261 days (19.88 yr)  
   first obs. used      1994-02-08  
   last obs. used      2013-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61263  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 11:47:09  

Additional Information
 Earth MOID = 3.91913 AU 
 T_jup = 2.839 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.3 mag n/a MPO279838  

30942 Helicaon           Discovered 1994 Feb. 8 by E. W. Elst at the European Southern Observatory.
Helicaon, a Trojan warrior, was the son of Antenor and the husband of Laodice, daughter of Priamos, king of Troy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

Alternate Designations
 1994 CX13 = 1999 RH51 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-23 07:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin