+ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1231827475457851 6.9818e-08   a 2.896506797635543 2.0287e-08 au q 2.539707132017754 1.9774e-07 au i 17.65035151325957 7.3963e-06 deg node 181.6087372645782 1.4398e-05 deg peri 183.5378290452343 2.2934e-05 deg M 62.2959547760361 1.7834e-05 deg tp 2458688.921415061553 (2019-Jul-24.42141506) 8.8484e-05 TDB period 1800.571015904703 4.93 1.8917e-05 5.179e-08 d yr n .1999365739090923 2.1005e-09 deg/d Q 3.253306463253333 2.2786e-08 au   Orbit Determination Parameters    # obs. used (total)      404      data-arc span      7418 days (20.31 yr)      first obs. used      1999-09-07      last obs. used      2019-12-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53408      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:39:48   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 ] 2021-Jan-21 16:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin