+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13949 (1990 RN3) Classification: Main-belt Asteroid          SPK-ID: 2013949 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250350 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1996404 n/a   a 2.3791413 n/a AU q 1.9041686 n/a AU i 5.48574 n/a deg node 180.04884 n/a deg peri 94.25049 n/a deg M 117.11494 n/a deg tp 2455964.4477155 (2012-Feb-06.94771550) n/a JED period 1340.3825541 3.67 n/a n/a d yr n 0.26858004 n/a deg/d Q 2.8541140 n/a AU   Orbit Determination Parameters    # obs. used (total)      949      first obs. used      1990-??-??      last obs. used      2013-01-19      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.506  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a PDS3 (MPC 39037)   13949 (1990 RN3)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar (675) Reference: 20000320/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 RN3 = 1993 HM  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 06:47 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin