+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13181 Peneleos (1996 RS28) Classification: Jupiter Trojan          SPK-ID: 2013181 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1362631255141652 3.9552e-08   a 5.219758576281481 1.0053e-07 au q 4.508497958247998 2.4137e-07 au i 2.544417138193518 6.5734e-06 deg node 10.92206298156909 9.0386e-05 deg peri 103.8208276281927 9.5203e-05 deg M 259.7089607752739 3.3974e-05 deg tp 2460413.982960483758 (2024-Apr-13.48296048) 0.00043743 TDB period 4355.861392514611 11.93 0.00012584 3.445e-07 d yr n .08264725792667482 2.3877e-09 deg/d Q 5.931019194314965 1.1423e-07 au   Orbit Determination Parameters    # obs. used (total)      906      data-arc span      15644 days (42.83 yr)      first obs. used      1978-03-15      last obs. used      2021-01-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5654      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:48:26   Additional Information  Earth MOID = 3.52599 au   Jupiter MOID = .195861 au   T_jup = 2.979  [ 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 12.04   n/a E2021B10   13181 Peneleos           Discovered 1996 Sept. 11 at the European Southern Observatory during the Uppsala-DLR Trojan Survey. Peneleos, leader of Boeotia, killed by Eurypylus, is said to have been one of those inside the wooden horse. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010309/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1996 RS28 = 1978 EW8 = 1997 UY11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 15:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin