+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   91465 (1999 RE80) Classification: Main-belt Asteroid          SPK-ID: 2091465 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1231827588812345 6.9908e-08   a 2.896506801214228 2.0473e-08 au q 2.5397071023224 1.9813e-07 au i 17.65035109388839 7.4969e-06 deg node 181.608734655058 1.4413e-05 deg peri 183.5378072903456 2.2981e-05 deg M 62.29597363045199 1.7949e-05 deg tp 2458688.921320182127 (2019-Jul-24.42132018) 8.901e-05 TDB period 1800.571019241659 4.93 1.909e-05 5.227e-08 d yr n .1999365735385545 2.1198e-09 deg/d Q 3.253306500106056 2.2995e-08 au   Orbit Determination Parameters    # obs. used (total)      400      data-arc span      7385 days (20.22 yr)      first obs. used      1999-09-07      last obs. used      2019-11-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54334      source      ORB      producer      Otto Matic      solution date      2019-Dec-04 08:48:20   Additional Information  Earth MOID = 1.53778 au   Jupiter MOID = 2.20667 au   T_jup = 3.208  [ 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 15.6   n/a MPO453354   91465 (1999 RE80)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20041028/Numbers.arc Last Updated: 2004-10-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-05 23:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin