+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   73640 Biermann (1977 RM) Classification: Main-belt Asteroid          SPK-ID: 2073640 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .07728928663721936 1.2442e-07   a 2.603546688993218 3.2427e-08 AU q 2.402320422674238 3.1836e-07 AU i 23.54590856762753 1.1243e-05 deg node 96.38248664052976 2.6439e-05 deg peri 283.1469928573095 7.767e-05 deg M 142.5573898792153 7.1237e-05 deg tp 2455792.877682787187 (2011-Aug-19.37768279) 0.00030275 JED period 1534.427884671206 4.20 2.8667e-05 7.849e-08 d yr n .2346151315394924 4.3831e-09 deg/d Q 2.804772955312198 3.4933e-08 AU   Orbit Determination Parameters    # obs. used (total)      345      data-arc span      13010 days (35.62 yr)      first obs. used      1977-09-05      last obs. used      2013-04-19      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .58429      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 17:24:18   Additional Information  Earth MOID = 1.50317 AU   T_jup = 3.292  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.143 mag .436 1 autocmod 2.5c 73640 Biermann           Discovered 1977 Sept. 5 by H.-E. Schuster at the European Southern Observatory. Ludwig Biermann (1907-1986) was the first director of the Max-Planck-Institut für Astrophysik. He made pioneering studies on stellar convection and the solar chromosphere and corona. His 1951 study of the structural changes in the tail of comet C/1942 X1 provided the first evidence of the existence of the solar wind. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050721/MPCPages.arc Last Updated: 2005-07-21 [ show close-approach data ] Alternate Designations  1977 RM = 1999 XH174  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-26 03:23 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin