+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13142 (1994 YM2) Classification: Main-belt Asteroid          SPK-ID: 2013142 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253456 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1270115 n/a   a 2.7280241 n/a AU q 2.3815337 n/a AU i 12.52409 n/a deg node 231.07378 n/a deg peri 213.16109 n/a deg M 21.86161 n/a deg tp 2456300.5574650 (2013-Jan-08.05746500) n/a JED period 1645.7759788 4.51 n/a n/a d yr n 0.21874180 n/a deg/d Q 3.0745145 n/a AU   Orbit Determination Parameters    # obs. used (total)      709      first obs. used      1989-??-??      last obs. used      2013-02-11      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.310  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.0 mag n/a PDS3 (MPC 37524)   13142 (1994 YM2)          Discovered 1994-Dec-25 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20000124/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1994 YM2 = 1989 SB13 = 1991 EQ  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 14:59 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin