+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1513 Matra (1940 EB) Classification: Main-belt Asteroid          SPK-ID: 2001513 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO244187 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0991229 n/a   a 2.1921395 n/a AU q 1.9748483 n/a AU i 3.97642 n/a deg node 136.23760 n/a deg peri 27.17238 n/a deg M 198.80358 n/a deg tp 2456931.3277313 (2014-Sep-30.82773130) n/a JED period 1185.4976882 3.25 n/a n/a d yr n 0.30366993 n/a deg/d Q 2.4094307 n/a AU   Orbit Determination Parameters    # obs. used (total)      1110      first obs. used      1950-??-??      last obs. used      2012-11-07      # oppositions      24      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.662  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.33 mag n/a PDS3 (MPC 17262)   rotation period rot_per 24. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Binzel, R.P.; Mulholland, J.D. (1983) Icarus 56, 519-533.] 1513 Matra           Discovered 1940 Mar. 10 by G. Kulin at Budapest. Named for the mountain in northern Hungary where an outstation of the Konkoly Observatory is located. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC 5182 Last Updated: 2006-03-21 Alternate Designations  1940 EB = 1940 EO  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 21:59 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin