+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1142 Aetolia (1930 BC) Classification: Main-belt Asteroid          SPK-ID: 2001142 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253368 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0861017 n/a   a 3.1817617 n/a AU q 2.9078066 n/a AU i 2.10138 n/a deg node 139.48881 n/a deg peri 95.10687 n/a deg M 174.34416 n/a deg tp 2455396.5668226 (2010-Jul-19.06682260) n/a JED period 2073.0028690 5.68 n/a n/a d yr n 0.17366112 n/a deg/d Q 3.4557168 n/a AU   Orbit Determination Parameters    # obs. used (total)      1423      first obs. used      1930-??-??      last obs. used      2013-02-05      # oppositions      42      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.192  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.3 mag n/a PDS3 (MPC 17261)   rotation period rot_per 10.730 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durkee, R.I. (2011) Minor Planet Bul. 38, 39-40.] 1142 Aetolia (1930 BC)          Discovered 1930-Jan-24 by Reinmuth, K. at Heidelberg (024) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1930 BC = 1931 LC = 1937 LN = 1937 LU = 1942 GF = 1942 GS = 1943 PF = 1948 JS = 1948 KG = 1954 KJ = 1954 MU = 1958 BB = A902 GB = A907 CB = A908 GB  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 01:39 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin