+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180875 (2005 JR84) Classification: Main-belt Asteroid          SPK-ID: 2180875 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1033747547104037 4.0717e-08   a 2.219765028396403 1.1909e-08 au q 1.990297363071193 9.3246e-08 au i 6.760677665554337 3.8134e-06 deg node 82.72956402158927 3.7977e-05 deg peri 126.5327168229026 4.3155e-05 deg M 264.6086917158324 2.209e-05 deg tp 2459520.584938244918 (2021-Nov-02.08493824) 7.5552e-05 TDB period 1207.977748086886 3.31 9.7212e-06 2.662e-08 d yr n .298018734674661 2.3983e-09 deg/d Q 2.449232693721613 1.314e-08 au   Orbit Determination Parameters    # obs. used (total)      451      data-arc span      6342 days (17.36 yr)      first obs. used      2003-10-29      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46453      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:28:19   Additional Information  Earth MOID = .991278 au   Jupiter MOID = 2.52475 au   T_jup = 3.634  [ 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 16.7   n/a MPO436894   180875 (2005 JR84)          Discovered 2005-May-08 by CSS at Catalina Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 15:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin