+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   44613 Rudolf (1999 RU31) Classification: Main-belt Asteroid          SPK-ID: 2044613 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02493946579630308 9.9408e-08   a 2.42086826238124 3.5084e-08 AU q 2.360493101154228 2.5955e-07 AU i 7.809021548971179 1.0947e-05 deg node 220.6130381196576 6.4038e-05 deg peri 79.30812790526672 0.00024504 deg M 280.6857966067596 0.00023474 deg tp 2456703.612347528998 (2014-Feb-15.11234753) 0.00089746 JED period 1375.799547143142 3.77 2.9907e-05 8.188e-08 d yr n .2616660259465433 5.6882e-09 deg/d Q 2.481243423608253 3.5959e-08 AU   Orbit Determination Parameters    # obs. used (total)      365      data-arc span      5447 days (14.91 yr)      first obs. used      1998-05-24      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .53538      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 16:01:54   Additional Information  Earth MOID = 1.35944 AU   T_jup = 3.500  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.259 mag .45197 1 autocmod 2.5c 44613 Rudolf           Discovered 1999 Sept. 8 by P. Pravec and P. Kusnirák at Ondrejov. Rudolf II (1552-1612), of the Habsburg dynasty, was a Czech and Hungarian king and Roman emperor. He created an important center for arts and sciences in Prague, assembled a great artistic collection and employed Tycho Brahe and Johannes Kepler as his court astronomers. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20031110/MPCPages.arc Last Updated: 2003-11-12 Alternate Designations  1999 RU31 = 2001 BS48  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 09:11 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin