+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12052 Aretaon (1997 JB16) Classification: Jupiter Trojan          SPK-ID: 2012052 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06934502797718936 2.3984e-08   a 5.231135796480787 7.79e-08 au q 4.868382538321351 1.6734e-07 au i 11.46867630750309 1.4472e-06 deg node 219.7716785107595 3.387e-06 deg peri 86.55642295611452 2.6576e-05 deg M 278.7590784863576 2.7643e-05 deg tp 2460186.699455171943 (2023-Aug-30.19945517) 0.00034814 TDB period 4370.110496620609 11.96 9.7617e-05 2.673e-07 d yr n .08237777975600086 1.8401e-09 deg/d Q 5.593889054640225 8.3302e-08 au   Orbit Determination Parameters    # obs. used (total)      2016      data-arc span      15861 days (43.43 yr)      first obs. used      1977-10-18      last obs. used      2021-03-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49849      source      ORB      producer      Otto Matic      solution date      2021-May-04 01:06:12   Additional Information  Earth MOID = 3.87679 au   Jupiter MOID = .265362 au   T_jup = 2.955  [ 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 10.64   n/a E2021B10   diameter diameter 39.151 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   rotation period rot_per 8.05 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.073   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   12052 Aretaon           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory. Aretaon was a Trojan warrior who was killed by Teucer. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030106/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1997 JB16 = 1977 UG5 = 1999 NE62  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-10 06:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin