+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1150 Achaia (1929 RB) Classification: Main-belt Asteroid          SPK-ID: 2001150 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250205 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2041496 n/a   a 2.1911710 n/a AU q 1.7438443 n/a AU i 2.38941 n/a deg node 206.67311 n/a deg peri 139.09893 n/a deg M 283.01387 n/a deg tp 2456653.8511229 (2013-Dec-27.35112290) n/a JED period 1184.7121584 3.24 n/a n/a d yr n 0.30387128 n/a deg/d Q 2.6384977 n/a AU   Orbit Determination Parameters    # obs. used (total)      1332      first obs. used      1929-??-??      last obs. used      2012-06-11      # oppositions      29      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.644  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.7 mag n/a PDS3 (MPC 28106)   rotation period rot_per 60.99 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2007) http://www.asu.cas.cz/~ppravec/neo.htm] 1150 Achaia (1929 RB)          Discovered 1929-Sep-02 by Reinmuth, K. at Heidelberg (024) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1929 RB = 1955 SZ1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 22:02 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin