+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187952 (2001 OL2) Classification: Main-belt Asteroid          SPK-ID: 2187952 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2079505626510941 2.9688e-08   a 2.374799341071735 9.1266e-09 au q 1.88095848191242 7.3598e-08 au i 14.06361671153129 3.8467e-06 deg node 181.1758596280028 1.6313e-05 deg peri 136.4095810536291 2.0559e-05 deg M 102.6293870501832 1.2606e-05 deg tp 2458819.427121217532 (2019-Dec-01.92712122) 4.5602e-05 TDB period 1336.714953725756 3.66 7.7057e-06 2.11e-08 d yr n .2693169542216842 1.5525e-09 deg/d Q 2.86864020023105 1.1024e-08 au   Orbit Determination Parameters    # obs. used (total)      453      data-arc span      8684 days (23.78 yr)      first obs. used      1997-04-30      last obs. used      2021-02-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .58187      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:57:30   Additional Information  Earth MOID = .892439 au   Jupiter MOID = 2.57363 au   T_jup = 3.473  [ 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 16.5   n/a MPO436930   187952 (2001 OL2)          Discovered 2001-Jul-16 by LONEOS at Anderson Mesa Reference: 20080618/Numbers.arc Last Updated: 2008-06-20 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 07:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin