+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150787 (2001 RZ21) Classification: Main-belt Asteroid          SPK-ID: 2150787 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06921372888494867 4.2115e-08   a 2.355867876929339 1.2439e-08 au q 2.192809476406792 9.4836e-08 au i 5.8165038757754 6.8984e-06 deg node 328.0471140694724 3.5255e-05 deg peri 251.7409877238689 6.1505e-05 deg M 235.1693423207332 5.1647e-05 deg tp 2459658.476907740051 (2022-Mar-19.97690774) 0.0001895 TDB period 1320.762782569253 3.62 1.0461e-05 2.864e-08 d yr n .2725697640417301 2.1588e-09 deg/d Q 2.518926277451886 1.33e-08 au   Orbit Determination Parameters    # obs. used (total)      535      data-arc span      7618 days (20.86 yr)      first obs. used      2000-05-02      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47818      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:20:01   Additional Information  Earth MOID = 1.1925 au   Jupiter MOID = 2.47377 au   T_jup = 3.544  [ 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 16.2   n/a MPO493857   150787 (2001 RZ21)          Discovered 2001-Sep-07 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 21:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin