+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   469909 (2005 YR42) Classification: Main-belt Asteroid          SPK-ID: 2469909 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1403195738011414 9.9991e-08   a 2.629869139774403 3.058e-08 au q 2.260847022928485 2.6178e-07 au i 11.74299927977567 9.1161e-06 deg node 282.298184567648 4.7161e-05 deg peri 259.7454939066075 5.9981e-05 deg M 80.83977854941755 3.3032e-05 deg tp 2458650.698031149803 (2019-Jun-16.19803115) 0.00014244 TDB period 1557.756726276659 4.26 2.717e-05 7.439e-08 d yr n .2311015538738644 4.0308e-09 deg/d Q 2.998891256620322 3.487e-08 au   Orbit Determination Parameters    # obs. used (total)      78      data-arc span      4814 days (13.18 yr)      first obs. used      2005-12-24      last obs. used      2019-02-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64098      source      ORB      producer      Otto Matic      solution date      2019-Jul-14 13:14:31   Additional Information  Earth MOID = 1.29964 au   Jupiter MOID = 2.14061 au   T_jup = 3.357  [ 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 16.9   n/a MPO434692   469909 (2005 YR42)          Discovered 2005-Dec-24 by Spacewatch at Kitt Peak Reference: Last Updated: 2016-08-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 04:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin