+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   14867 (1990 RW4) Classification: Main-belt Asteroid          SPK-ID: 2014867 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236475 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1426176 n/a   a 3.1767702 n/a AU q 2.7237069 n/a AU i 4.17708 n/a deg node 302.75741 n/a deg peri 344.40632 n/a deg M 49.92044 n/a deg tp 2456113.7172479 (2012-Jul-05.21724790) n/a JED period 2068.1266185 5.66 n/a n/a d yr n 0.17407058 n/a deg/d Q 3.6298335 n/a AU   Orbit Determination Parameters    # obs. used (total)      883      first obs. used      1990-??-??      last obs. used      2012-08-04      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.181  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.7 mag n/a PDS3 (MPO 24)   14867 (1990 RW4)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar (675) Reference: 20000523/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 RW4 = 1990 QU18 = 1996 TK14  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 23:47 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin