+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11574 d'Alviella (1994 BP3) Classification: Main-belt Asteroid          SPK-ID: 2011574 [ 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 .2492963208810704 3.8309e-08   a 2.293461123272563 4.7747e-09 au q 1.721709703156946 8.6911e-08 au i 11.78999062295505 3.8267e-06 deg node 137.4546504202535 1.3834e-05 deg peri 195.9858662765229 1.4981e-05 deg M 340.7579056403316 4.9225e-06 deg tp 2459068.308687806711 (2020-Aug-06.80868781) 1.7374e-05 TDB period 1268.631530130208 3.47 3.9617e-06 1.085e-08 d yr n .2837703394957012 8.8615e-10 deg/d Q 2.865212543388179 5.965e-09 au   Orbit Determination Parameters    # obs. used (total)      2097      data-arc span      15977 days (43.74 yr)      first obs. used      1977-02-18      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47255      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:46:23   Additional Information  Earth MOID = .713773 au   Jupiter MOID = 2.51102 au   T_jup = 3.528  [ 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 14.2   n/a MPO384859   diameter diameter 6.536 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 12.549 h n/a LCDB (Rev. 2020-October); 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: [Higgins, D.; Goncalves, R.M.D. (2007) Minor Planet Bull. 34, 16-18.] geometric albedo albedo 0.114   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   11574 d´Aviella           Discovered 1994 Jan. 16 by E. W. Elst at Caussols. Count Goblet d´Aviella was a Belgian historian. A Grandmaster of the Grand-Orient Belgian Masonic Lodge, he wrote a manual for the higher grades of freemasonry. He presided over the Belgian Academy and was a rector and professor at the Université Libre de Bruxelles. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000523/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1994 BP3 = 1977 DM2 = 1998 FY82  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 00:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin