+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12657 Bonch-Bruevich (1971 QO1) Classification: Main-belt Asteroid          SPK-ID: 2012657 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236464 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1034651 n/a   a 3.0210144 n/a AU q 2.7084448 n/a AU i 9.44519 n/a deg node 321.38261 n/a deg peri 34.12398 n/a deg M 331.02536 n/a deg tp 2456554.8629889 (2013-Sep-19.36298890) n/a JED period 1917.9073840 5.25 n/a n/a d yr n 0.18770458 n/a deg/d Q 3.3335840 n/a AU   Orbit Determination Parameters    # obs. used (total)      717      first obs. used      1971-??-??      last obs. used      2012-08-17      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.218  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.3 mag n/a PDS3 (MPC 37026)   12657 Bonch-Bruevich           Discovered 1971 Aug. 30 by T. M. Smirnova at the Crimean Astrophysical Observatory. Aleksej Mikhajlovich Bonch-Bruevich (b. 1916), a corresponding member of the Russian Academy of Sciences, is renowned for his research in the field of laser radiation interaction with absorbing and transparent environments. He is founder of a new scientific branch on power optics. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1971 QO1 = 1971 SC4 = 1982 VV1 = 1984 CE1 = 1998 XA32  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 19:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin