+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   301886 (1998 QY4) Classification: Main-belt Asteroid          SPK-ID: 2301886 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO251861 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.3072171 n/a   a 2.6175412 n/a AU q 1.8133878 n/a AU i 15.47414 n/a deg node 315.69263 n/a deg peri 355.37624 n/a deg M 175.97164 n/a deg tp 2455644.4006030 (2011-Mar-23.90060300) n/a JED period 1546.8161968 4.23 n/a n/a d yr n 0.23273612 n/a deg/d Q 3.4216946 n/a AU   Orbit Determination Parameters    # obs. used (total)      69      first obs. used      1998-??-??      last obs. used      2013-01-16      # oppositions      5      planetary ephem.      DE403      condition code      1      fit RMS      0.62      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 3.289  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.5 mag n/a MPO251861   301886 (1998 QY4)          Discovered 1998-Aug-22 by Beijing Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 Alternate Designations  1998 QY4 = 2010 ML58  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 03:07 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin