+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4801 Ohre (1989 UR4) Classification: Main-belt Asteroid          SPK-ID: 2004801 [ 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 .1612093110753038 5.2794e-08   a 2.643647013925227 1.8376e-08 AU q 2.217466500084057 1.3965e-07 AU i 2.254434094760307 5.9223e-06 deg node 66.62108154112539 0.00018349 deg peri 44.90944008247698 0.00018503 deg M 106.9907270099325 2.3847e-05 deg tp 2455933.897281572988 (2012-Jan-07.39728157) 0.00010448 JED period 1570.014367863209 4.30 1.6369e-05 4.482e-08 d yr n .2292972646422086 2.3907e-09 deg/d Q 3.069827527766397 2.1338e-08 AU   Orbit Determination Parameters    # obs. used (total)      1105      data-arc span      27117 days (74.24 yr)      first obs. used      1939-01-19      last obs. used      2013-04-17      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54655      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:13:30   Additional Information  Earth MOID = 1.23423 AU   T_jup = 3.374  [ 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 12.5 mag n/a PDS3 (MPC 28112)   rotation period rot_per 32.000 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Klinglesmith III, D.A. (2012) Minor Planet Bul. 39, 109-110.] [Owings, L.E. (2013) Minor Planet Bul. 40, 8-10.] 4801 Ohre           Discovered 1989 Oct. 22 by A. Mrkos at Klet. Named for a Czech river rising in Germany near the Czech border and continuing through the towns of Karlovy Vary, Zatec and Louny to its confluence with the Labe river. Name proposed by Z. Moravec. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990402/MPCPages.arc Last Updated: 2010-06-11 Alternate Designations  1989 UR4 = 1939 BE = 1952 DA1 = 1985 YQ1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 18:59 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin