+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9585 (1990 QY2) Classification: Main-belt Asteroid          SPK-ID: 2009585 [ 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 .09881343623169915 1.6987e-07   a 2.479727569439276 2.1565e-08 AU q 2.234697167384502 4.1032e-07 AU i 2.314709464826289 8.8528e-06 deg node .1388759491412659 0.00014891 deg peri 49.02346711257398 0.00015877 deg M 231.407694856169 4.7782e-05 deg tp 2456909.967944298601 (2014-Sep-09.46794430) 0.00018763 JED period 1426.2786544059 3.90 1.8606e-05 5.094e-08 d yr n .2524050955175754 3.2926e-09 deg/d Q 2.72475797149405 2.3696e-08 AU   Orbit Determination Parameters    # obs. used (total)      1005      data-arc span      12684 days (34.73 yr)      first obs. used      1978-07-10      last obs. used      2013-04-01      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .51185      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:36:23   Additional Information  Earth MOID = 1.24476 AU   T_jup = 3.471  [ 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 14.1 mag n/a PDS3 (MPC 32885)   9585 (1990 QY2)          Discovered 1990-Aug-28 by Holt, H. E. at Palomar (675) Reference: 19981110/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 QY2 = 1978 NH7  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 01:09 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin