+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10506 Rydberg (1988 CW4) Classification: Main-belt Asteroid          SPK-ID: 2010506 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253438 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0501437 n/a   a 2.9955588 n/a AU q 2.8453504 n/a AU i 6.93738 n/a deg node 249.47772 n/a deg peri 207.44969 n/a deg M 1.03978 n/a deg tp 2456395.0304178 (2013-Apr-12.53041780) n/a JED period 1893.7175237 5.18 n/a n/a d yr n 0.19010227 n/a deg/d Q 3.1457672 n/a AU   Orbit Determination Parameters    # obs. used (total)      670      first obs. used      1955-??-??      last obs. used      2013-01-31      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.242  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.8 mag n/a PDS3 (MPC 34438)   10506 Rydberg           Johannes Robert Rydberg (1854-1919) was a Swedish physicist educated at the University of Lund who held the chair of physics from 1901 to 1919. He is well-known for the Rydberg constant, which appears in a spectroscopic expression that relates the various lines in the spectra of chemical elements. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000320/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1988 CW4 = 1991 VX12  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 09:36 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin