+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1153 Wallenbergia (1924 SL) Classification: Main-belt Asteroid          SPK-ID: 2001153 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256870 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1598178 n/a   a 2.1968998 n/a AU q 1.8457961 n/a AU i 3.33420 n/a deg node 280.57152 n/a deg peri 28.78156 n/a deg M 112.86392 n/a deg tp 2456027.6222872 (2012-Apr-10.12228720) n/a JED period 1189.3612823 3.26 n/a n/a d yr n 0.30268347 n/a deg/d Q 2.5480035 n/a AU   Orbit Determination Parameters    # obs. used (total)      1205      first obs. used      1930-??-??      last obs. used      2013-03-09      # oppositions      28      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.649  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.1 mag n/a PDS3 (MPC 17261)   rotation period rot_per 4.096 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Science XXVI, 1511-1512.] 1153 Wallenbergia (1924 SL)          Discovered 1924-Sep-05 by Belyavskij, S. at Simeis (094) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1924 SL = 1930 HH  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 15:48 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin