+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   18142 Adamsidman (2000 OG47) Classification: Main-belt Asteroid          SPK-ID: 2018142 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO101871 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1543127 n/a   a 2.2287229 n/a AU q 1.8848027 n/a AU i 3.91059 n/a deg node 173.49226 n/a deg peri 191.09014 n/a deg M 282.33437 n/a deg tp 2455462.6856338 (2010-Sep-23.18563380) n/a JED period 1215.2972708 3.33 n/a n/a d yr n 0.29622382 n/a deg/d Q 2.5726431 n/a AU   Orbit Determination Parameters    # obs. used (total)      298      first obs. used      1990-??-??      last obs. used      2006-06-21      # oppositions      9      planetary ephem.      DE403      quality code      1      fit RMS      0.65      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.625  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.1 mag n/a PDS3 (MPO 4257)   18142 Adamsidman           Discovered 2000 July 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Adam Daniel Sidman (b. 1988) was awarded second place in the 2003 Intel International Science and Engineering Fair for his engineering project. He attends the William J. Palmer High School, Colorado Springs, Colorado, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040614/MPCPages.arc Last Updated: 2004-06-16 Alternate Designations  2000 OG47 = 1990 RJ2 = 1999 GA30  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-23 20:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin