+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0643157103393126 3.0031e-08   a 5.272649006860059 7.4663e-08 au q 4.933534840613983 1.9552e-07 au i 13.7095935236831 2.0848e-06 deg node 128.0784208068702 5.4059e-06 deg peri 126.6850894062327 1.8823e-05 deg M 3.793253023641797 1.8384e-05 deg tp 2459153.903743033815 (2020-Oct-31.40374303) 0.00022615 TDB period 4422.2340042378 12.11 9.3932e-05 2.572e-07 d yr n .08140681828573842 1.7291e-09 deg/d Q 5.611763173106135 7.9465e-08 au   Orbit Determination Parameters    # obs. used (total)      2408      data-arc span      10884 days (29.80 yr)      first obs. used      1990-12-11      last obs. used      2020-09-28      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43772      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:50:38   Additional Information  Earth MOID = 3.93733 au   Jupiter MOID = .0100662 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 10.57   n/a MPCxxxxx   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-May-13 16:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin