+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   48538 (1993 RF15) Classification: Main-belt Asteroid          SPK-ID: 2048538 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257194 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2173856 n/a   a 2.6960796 n/a AU q 2.1099907 n/a AU i 1.75631 n/a deg node 170.27412 n/a deg peri 151.93967 n/a deg M 173.36619 n/a deg tp 2455621.8193235 (2011-Mar-01.31932350) n/a JED period 1616.9533607 4.43 n/a n/a d yr n 0.22264093 n/a deg/d Q 3.2821685 n/a AU   Orbit Determination Parameters    # obs. used (total)      487      first obs. used      1991-??-??      last obs. used      2013-03-03      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.48      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.335  [ 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 MPO257194   48538 (1993 RF15)          Discovered 1993-Sep-15 by Debehogne, H., Elst, E. W. at La Silla (809) Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1993 RF15 = 1996 FP9 = 2000 DU8  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 03:35 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin