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30704 Phegeus (3250 T-3)
Classification: Jupiter Trojan          SPK-ID: 2030704
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03802182700177375 8.1539e-08  
a 5.223416951296071 1.6147e-07 au
q 5.024813095615759 4.2009e-07 au
i 14.91080447252481 1.2217e-05 deg
node 20.52471962075395 3.2477e-05 deg
peri 288.9694136495731 0.0001709 deg
M 167.7620501772923 0.00017014 deg
tp 2455368.509411227543
(2010-Jun-21.00941123)
0.0020621 JED
period 4360.441537195165
11.94
0.00020219
5.536e-07
d
yr
n .08256044644312982 3.8283e-09 deg/d
Q 5.422020806976382 1.6761e-07 au
  Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      13951 days (38.20 yr)  
   first obs. used      1977-10-07  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56252  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:34  

Additional Information
 Earth MOID = 4.0453 au 
 Jupiter MOID = .158026 au 
 T_jup = 2.931 
[ 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 11.2 mag n/a MPO279836  

30704 Phegeus           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Phegeus was the oldest son of Dares, a priest of the god Hephaistos. Phegeus was fatally wounded with the spear of Diomedes.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 3250 T-3 = 1999 RG246 = 2000 RN38 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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