+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11554 Asios (1993 BZ12) Classification: Jupiter Trojan          SPK-ID: 2011554 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06478457652626568 2.9898e-08   a 5.275800493466726 7.3402e-08 au q 4.93400999266042 1.9317e-07 au i 13.70935623879157 2.084e-06 deg node 128.0791025624714 5.4044e-06 deg peri 127.1203058609602 1.8584e-05 deg M 19.34732061350526 1.7966e-05 deg tp 2459158.624726319142 (2020-Nov-05.12472632) 0.0002226 TDB period 4426.199381082877 12.12 9.2372e-05 2.529e-07 d yr n .08133388693211677 1.6974e-09 deg/d Q 5.617590994273032 7.8157e-08 au   Orbit Determination Parameters    # obs. used (total)      2459      data-arc span      11143 days (30.51 yr)      first obs. used      1990-12-11      last obs. used      2021-06-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43557      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:44:01   Additional Information  Earth MOID = 3.93921 au   Jupiter MOID = .0106185 au   T_jup = 2.939  [ 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 10.58   n/a MPO614063   diameter diameter 41.561 km 0.538 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   geometric albedo albedo 0.065   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   11554 Asios           Discovered 1993 Jan. 22 by E. W. Elst at the European Southern Observatory. Asios was a Trojan warrior and one of the leaders in the assault on the Greek wall. He challenged Idomeneos and was killed by him. 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  1993 BZ12 = 1994 EL6 = 1998 OD2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-28 15:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin