+ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06385407572191859 5.1568e-08   a 5.27019341190505 7.8553e-08 au q 4.933670082712108 3.0527e-07 au i 13.70906288632474 3.6999e-06 deg node 128.0820888512087 1.9506e-05 deg peri 126.3874799055251 3.876e-05 deg M 347.760402334087 3.1298e-05 deg tp 2459150.745993176472 (2020-Oct-28.24599318) 0.00038292 TDB period 4419.145058514907 12.10 9.8803e-05 2.705e-07 d yr n .08146372097615218 1.8214e-09 deg/d Q 5.606716741097992 8.3569e-08 au   Orbit Determination Parameters    # obs. used (total)      2375      data-arc span      10884 days (29.80 yr)      first obs. used      1990-12-11      last obs. used      2020-09-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43807      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:58:48   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 10.58   n/a E2021B10   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-Feb-24 21:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin