+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   91022 (1998 DV31) Classification: Main-belt Asteroid          SPK-ID: 2091022 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236767 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2398126 n/a   a 2.6134508 n/a AU q 1.9867124 n/a AU i 11.59284 n/a deg node 336.61957 n/a deg peri 156.88302 n/a deg M 220.90946 n/a deg tp 2456996.7316199 (2014-Dec-05.23161990) n/a JED period 1543.1918171 4.23 n/a n/a d yr n 0.23328273 n/a deg/d Q 3.2401892 n/a AU   Orbit Determination Parameters    # obs. used (total)      558      first obs. used      1997-??-??      last obs. used      2012-08-06      # oppositions      10      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.339  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.2 mag n/a MPC47724   91022 (1998 DV31)          Discovered 1998-Feb-19 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20041028/Numbers.arc Last Updated: 2004-10-29 Alternate Designations  1998 DV31 = 1981 EZ48 = 2000 QH111  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 21:59 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin