+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   30558 Jamesoconnor (2001 OC68) Classification: Main-belt Asteroid          SPK-ID: 2030558 [ 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 .2083487050254325 1.0454e-07   a 2.219948200958206 1.105e-08 AU q 1.757424868065025 2.3151e-07 AU i 6.462025626204897 1.1112e-05 deg node 335.8894789234154 3.642e-05 deg peri 24.66237370738171 4.0129e-05 deg M 166.6107114944544 1.3318e-05 deg tp 2455841.369598684740 (2011-Oct-06.86959868) 4.4708e-05 JED period 1208.127272658538 3.31 9.02e-06 2.47e-08 d yr n .2979818502133503 2.2248e-09 deg/d Q 2.682471533851386 1.3352e-08 AU   Orbit Determination Parameters    # obs. used (total)      631      data-arc span      7948 days (21.76 yr)      first obs. used      1991-07-14      last obs. used      2013-04-17      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .56263      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 14:55:16   Additional Information  Earth MOID = .755561 AU   T_jup = 3.613  [ 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 15.0 mag n/a PDS3 (MPO 16645)   30558 Jamesoconnor           Discovered 2001 July 16 by the Lowell Observatory Near-Earth-Object Search at the Anderson Mesa Station. Irish amateur astronomer James O'Connor (b. 1931) has been a stalwart of the Irish Astronomical Society for sixty years, serving as president, secretary and council member. He has also written a history of the Society covering the years 1937--2006. The name was suggested by J. McConnell. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100923/MPCPages.arc Last Updated: 2010-12-06 Alternate Designations  2001 OC68 = 1991 NM2 = 2000 EV144  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 12:27 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin