+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7340 (1991 UA2) Classification: Main-belt Asteroid          SPK-ID: 2007340 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02800780412613763 7.3998e-08   a 2.832128796961983 2.765e-08 AU q 2.752807088356678 2.1408e-07 AU i 1.08336094518382 6.4008e-06 deg node 303.2885485150469 0.00031855 deg peri 214.5242147703205 0.00033944 deg M 64.53159137648232 0.00011344 deg tp 2456088.440217761535 (2012-Jun-09.94021776) 0.00054997 JED period 1740.876355434011 4.77 2.5494e-05 6.98e-08 d yr n .2067924002048094 3.0283e-09 deg/d Q 2.911450505567288 2.8424e-08 AU   Orbit Determination Parameters    # obs. used (total)      1009      data-arc span      8778 days (24.03 yr)      first obs. used      1989-04-01      last obs. used      2013-04-13      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .60333      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:25:56   Additional Information  Earth MOID = 1.76105 AU   T_jup = 3.312  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.5 mag n/a PDS3 (MPC 28572)   7340 (1991 UA2)          Discovered 1991-Oct-29 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1991 UA2 = 1993 BZ3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 23:54 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin