+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   136557 Neleus (5214 T-2) Classification: Jupiter Trojan          SPK-ID: 2136557 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257632 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0641290 n/a   a 5.1996959 n/a AU q 4.8662446 n/a AU i 9.96335 n/a deg node 277.79583 n/a deg peri 163.07725 n/a deg M 70.16817 n/a deg tp 2455556.3823016 (2010-Dec-25.88230160) n/a JED period 4330.7723632 11.86 n/a n/a d yr n 0.08312605 n/a deg/d Q 5.5331472 n/a AU   Orbit Determination Parameters    # obs. used (total)      246      first obs. used      1973-??-??      last obs. used      2013-03-17      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.47      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 2.966   MPC Jupiter Trojan  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.6 mag n/a MPO257632   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.arc Last Updated: 2008-12-12 Alternate Designations  5214 T-2 = 2002 GE50  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 20:24 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin