+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   52651 (1997 YF18) Classification: Main-belt Asteroid          SPK-ID: 2052651 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257215 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1293157 n/a   a 3.1479012 n/a AU q 2.7408282 n/a AU i 11.72734 n/a deg node 51.19209 n/a deg peri 188.30417 n/a deg M 202.33769 n/a deg tp 2457293.9195452 (2015-Sep-28.41954520) n/a JED period 2039.9995172 5.59 n/a n/a d yr n 0.17647063 n/a deg/d Q 3.5549742 n/a AU   Orbit Determination Parameters    # obs. used (total)      617      first obs. used      1997-??-??      last obs. used      2013-03-08      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.53      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.163  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.3 mag n/a MPO257215   52651 (1997 YF18)          Discovered 1997-Dec-27 by BAO Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1997 YF18 = 2000 QD66  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 13:07 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin