+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   30857 Parsec (1991 YY) Classification: Main-belt Asteroid          SPK-ID: 2030857 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250508 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1605308 n/a   a 2.2168002 n/a AU q 1.8609355 n/a AU i 3.49293 n/a deg node 207.38516 n/a deg peri 225.02288 n/a deg M 187.14146 n/a deg tp 2456979.3640633 (2014-Nov-17.86406330) n/a JED period 1205.5583877 3.30 n/a n/a d yr n 0.29861681 n/a deg/d Q 2.5726649 n/a AU   Orbit Determination Parameters    # obs. used (total)      758      first obs. used      1991-??-??      last obs. used      2012-06-11      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.633  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9 mag n/a PDS3 (MPO 18562)   30857 Parsec           Discovered 1991 Dec. 31 by E. W. Elst at Haute Provence. To the nearest integer, the number of this minor planet represents one parsec in units of a trillion meters. The name was suggested by A. Nakamura. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080321/MPCPages.arc Last Updated: 2008-03-26 Alternate Designations  1991 YY = 1996 HK12  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 16:13 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin