+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06920056396823181 4.2377e-08   a 5.233062587242095 8.7208e-08 au q 4.870931704923888 2.6619e-07 au i 11.4664150338603 5.7146e-06 deg node 219.7740479528034 2.2635e-05 deg peri 86.24987697257063 5.3351e-05 deg M 262.5789814603144 5.1379e-05 deg tp 2460183.766271463327 (2023-Aug-27.26627146) 0.00063811 TDB period 4372.525191299161 11.97 0.0001093 2.992e-07 d yr n .08233228723675738 2.0581e-09 deg/d Q 5.595193469560303 9.3242e-08 au   Orbit Determination Parameters    # obs. used (total)      1876      data-arc span      15630 days (42.79 yr)      first obs. used      1977-10-18      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49584      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:30:05   Additional Information  Earth MOID = 3.88119 au   Jupiter MOID = .264052 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 10.6   n/a MPO332933   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. 2019-August); 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.] 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 ] 2020-Oct-27 10:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin