+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06385407507732026 5.1675e-08   a 5.270193412790629 7.8686e-08 au q 4.933670086938298 3.0605e-07 au i 13.70906293717088 3.7225e-06 deg node 128.0820891144227 1.9557e-05 deg peri 126.3874799772841 3.8853e-05 deg M 347.7604019114864 3.1428e-05 deg tp 2459150.745998401935 (2020-Oct-28.24599840) 0.00038453 TDB period 4419.145059628765 12.10 9.8969e-05 2.71e-07 d yr n .081463720955619 1.8244e-09 deg/d Q 5.606716738642961 8.371e-08 au   Orbit Determination Parameters    # obs. used (total)      2304      data-arc span      10826 days (29.64 yr)      first obs. used      1990-12-11      last obs. used      2020-08-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44032      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:25:48   Additional Information  Earth MOID = 3.93935 au   Jupiter MOID = .00981117 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 10.5   n/a MPO449025   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 ] 2020-Oct-29 05:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin