+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   48835 (1997 YK18) Classification: Main-belt Asteroid          SPK-ID: 2048835 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257195 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0884168 n/a   a 2.9997708 n/a AU q 2.7345407 n/a AU i 10.70162 n/a deg node 146.39545 n/a deg peri 288.13361 n/a deg M 9.90045 n/a deg tp 2456348.3105188 (2013-Feb-24.81051880) n/a JED period 1897.7130555 5.20 n/a n/a d yr n 0.18970202 n/a deg/d Q 3.2650009 n/a AU   Orbit Determination Parameters    # obs. used (total)      631      first obs. used      1997-??-??      last obs. used      2013-03-06      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.221  [ 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 MPO257195   48835 (1997 YK18)          Discovered 1997-Dec-22 by BAO Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1997 YK18 = 1999 GJ44  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 06:23 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin