+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173557 (2000 YU127) Classification: Main-belt Asteroid          SPK-ID: 2173557 [ 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 .2339847112606204 4.5981e-08   a 2.303742844956099 8.4991e-09 au q 1.764702240560326 1.0701e-07 au i 4.381741978187118 5.4171e-06 deg node 24.26937368992093 5.8833e-05 deg peri 13.77078906095486 6.0762e-05 deg M 252.1572853936643 1.3937e-05 deg tp 2459383.093631380021 (2021-Jun-17.59363138) 5.0134e-05 TDB period 1277.172109396397 3.50 7.0677e-06 1.935e-08 d yr n .2818727384910865 1.5599e-09 deg/d Q 2.842783449351872 1.0488e-08 au   Orbit Determination Parameters    # obs. used (total)      740      data-arc span      6697 days (18.34 yr)      first obs. used      2000-12-29      last obs. used      2019-05-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55448      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 11:59:41   Additional Information  Earth MOID = .772451 au   Jupiter MOID = 2.58746 au   T_jup = 3.549  [ 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 16.3   n/a MPO338379   173557 (2000 YU127)          Discovered 2000-Dec-29 by NEAT at Haleakala Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-07 22:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin