+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187252 (2005 SA229) Classification: Main-belt Asteroid          SPK-ID: 2187252 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .106058685888904 1.039e-07   a 2.911619336684415 1.7228e-08 au q 2.602816816026944 2.9926e-07 au i 1.456976835398581 9.3709e-06 deg node 352.6742143488435 0.000185 deg peri 30.9693168190173 0.00019035 deg M 7.188107800380339 3.6633e-05 deg tp 2459164.266323700006 (2020-Nov-10.76632370) 0.00018474 TDB period 1814.681113617635 4.97 1.6106e-05 4.41e-08 d yr n .1983819621521968 1.7607e-09 deg/d Q 3.220421857341887 1.9055e-08 au   Orbit Determination Parameters    # obs. used (total)      308      data-arc span      7401 days (20.26 yr)      first obs. used      2000-10-01      last obs. used      2021-01-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55352      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:54:38   Additional Information  Earth MOID = 1.605 au   Jupiter MOID = 2.23023 au   T_jup = 3.274  [ 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 16.6   n/a MPO440040   187252 (2005 SA229)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-19 07:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin