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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0686055752826684 9.4232e-08  
a 5.168323560745677 1.5628e-07 AU
q 4.81374774961375 5.1699e-07 AU
i 22.90272304622532 9.8958e-06 deg
node 143.6262009074178 2.4831e-05 deg
peri 269.5339967780458 9.4631e-05 deg
M 27.56754282290615 8.4633e-05 deg
tp 2456671.861434701296
(2014-Jan-14.36143470)
0.0010107 JED
period 4291.636881370086
11.75
0.00019466
5.33e-07
d
yr
n .08388407732321276 3.8048e-09 deg/d
Q 5.522899371877603 1.6701e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      7675 days (21.01 yr)  
   first obs. used      1994-02-08  
   last obs. used      2015-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5513  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:37:02  

Additional Information
 Earth MOID = 3.92075 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 ]
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