+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13073 (1991 RE15) Classification: Main-belt Asteroid          SPK-ID: 2013073 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250342 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2211352 n/a   a 2.2618926 n/a AU q 1.7617085 n/a AU i 7.94111 n/a deg node 343.02896 n/a deg peri 330.92558 n/a deg M 151.43606 n/a deg tp 2455877.8232136 (2011-Nov-12.32321360) n/a JED period 1242.5286493 3.40 n/a n/a d yr n 0.28973175 n/a deg/d Q 2.7620767 n/a AU   Orbit Determination Parameters    # obs. used (total)      770      first obs. used      1981-??-??      last obs. used      2013-01-18      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.574  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.8 mag n/a PDS3 (MPC 37506)   13073 (1991 RE15)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar (675) Reference: 20000124/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RE15 = 1950 OK = 1974 SY = 1981 TL1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 18:53 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin