+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   29170 (1990 OA3) Classification: Main-belt Asteroid          SPK-ID: 2029170 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250491 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0918144 n/a   a 2.9793684 n/a AU q 2.7058195 n/a AU i 9.01736 n/a deg node 244.01256 n/a deg peri 57.80156 n/a deg M 163.07636 n/a deg tp 2455549.6103183 (2010-Dec-19.11031830) n/a JED period 1878.3855944 5.14 n/a n/a d yr n 0.19165394 n/a deg/d Q 3.2529173 n/a AU   Orbit Determination Parameters    # obs. used (total)      619      first obs. used      1986-??-??      last obs. used      2013-01-18      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.235  [ 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 (MPO 16201)   29170 (1990 OA3)          Discovered 1990-Jul-27 by Holt, H. E. at Palomar (675) Reference: 20011002/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 OA3 = 1986 WG1 = 2000 LQ18  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 22:51 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin