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JPL Small-Body Database Browser
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136557 Neleus (5214 T-2)
Classification: Jupiter Trojan          SPK-ID: 2136557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06235921183277914 6.128e-08  
a 5.211350091704186 1.9209e-07 au
q 4.886374407400831 4.4228e-07 au
i 9.960801220726403 6.5392e-06 deg
node 277.7892182709975 4.2897e-05 deg
peri 163.1390491961276 8.6108e-05 deg
M 252.8301106490325 7.8569e-05 deg
tp 2459894.082354004884
(2022-Nov-10.58235400)
0.00098856 TDB
period 4345.340377432744
11.90
0.00024025
6.578e-07
d
yr
n .08284736493132683 4.5805e-09 deg/d
Q 5.536325776007541 2.0406e-07 au
  Orbit Determination Parameters
   # obs. used (total)      337  
   data-arc span      16813 days (46.03 yr)  
   first obs. used      1973-09-20  
   last obs. used      2019-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49492  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 16:04:00  

Additional Information
 Earth MOID = 3.9037 au 
 Jupiter MOID = .270641 au 
 T_jup = 2.966 
[ 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 12.5   n/a MPO453849  

136557 Neleus           Discovered 1973 Sept. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Neleus was the father of the Greek Nestor, known for his wisdom. Neleus and his wife Chloris and their other children were first banished to Messina. Later all but Nestor were killed by Heracles.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081212/MPCPages.arcLast Updated: 2008-12-12

Alternate Designations
 5214 T-2 = 2002 GE50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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