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129137 Hippolochos (2005 AP27)
Classification: Jupiter Trojan          SPK-ID: 2129137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05761159392584397 6.3689e-08  
a 5.133759408387164 1.5752e-07 au
q 4.837995346038181 3.4904e-07 au
i 12.51043161062035 5.9758e-06 deg
node 114.5145942202617 3.4965e-05 deg
peri 230.9144937396125 7.8483e-05 deg
M 232.4620553901709 7.5087e-05 deg
tp 2460505.680583629944
(2024-Jul-14.18058363)
0.00092819 TDB
period 4248.65722718429
11.63
0.00019555
5.354e-07
d
yr
n .0847326533420025 3.8999e-09 deg/d
Q 5.429523470736146 1.666e-07 au
  Orbit Determination Parameters
   # obs. used (total)      281  
   data-arc span      6769 days (18.53 yr)  
   first obs. used      2001-10-15  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55515  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:41:54  

Additional Information
 Earth MOID = 3.84522 au 
 Jupiter MOID = .060932 au 
 T_jup = 2.950 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO432771  

129137 Hippolochos           Discovered 2005 Jan. 13 by M. Ory at Vicques.
Hippolochos was the son of Antimachos, the Trojan councillor responsible for preventing Helen from being restored to the Greeks. This brave warrior was killed by Agamemnon. Etymologically, hippo-lochos means "an ambush with a horse"---such as the Trojan Horse. The name was suggested by C. Eschenlohr.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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