+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249924 (2001 SR322) Classification: Main-belt Asteroid          SPK-ID: 2249924 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1716001603653458 7.4756e-08   a 2.734150245566553 1.9892e-08 au q 2.264969624964383 2.0875e-07 au i 8.363405580688802 5.2546e-06 deg node 261.1519262601786 4.5535e-05 deg peri 52.67254662895524 4.9274e-05 deg M 87.0273292076001 1.9355e-05 deg tp 2458601.304951558134 (2019-Apr-27.80495156) 8.9424e-05 TDB period 1651.32285165568 4.52 1.8021e-05 4.934e-08 d yr n .2180070357768319 2.3791e-09 deg/d Q 3.203330866168724 2.3305e-08 au   Orbit Determination Parameters    # obs. used (total)      426      data-arc span      6686 days (18.31 yr)      first obs. used      2001-08-16      last obs. used      2019-12-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54224      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 16:46:34   Additional Information  Earth MOID = 1.26223 au   Jupiter MOID = 2.09145 au   T_jup = 3.316  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.8   n/a MPO494362   249924 (2001 SR322)          Discovered 2001-Sep-25 by LINEAR at Socorro Reference: 20100923/Numbers.arc Last Updated: 2010-09-27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 20:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin