+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180009 (2002 YY20) Classification: Main-belt Asteroid          SPK-ID: 2180009 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .10629803114007 6.4514e-08   a 2.520732490455573 1.349e-08 au q 2.25278358968934 1.623e-07 au i 2.842350596317391 3.9587e-06 deg node 94.54257875373972 9.3844e-05 deg peri 274.7859290972918 9.707e-05 deg M 236.4154810186059 2.8611e-05 deg tp 2459702.322507755861 (2022-May-02.82250776) 0.00011768 TDB period 1461.802046737813 4.00 1.1734e-05 3.213e-08 d yr n .2462713749808897 1.9769e-09 deg/d Q 2.788681391221806 1.4924e-08 au   Orbit Determination Parameters    # obs. used (total)      666      data-arc span      8856 days (24.25 yr)      first obs. used      1996-02-16      last obs. used      2020-05-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53005      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:24:46   Additional Information  Earth MOID = 1.25262 au   Jupiter MOID = 2.6723 au   T_jup = 3.447  [ 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 15.61   n/a E2021B55   180009 (2002 YY20)          Discovered 2002-Dec-31 by LINEAR at Socorro Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 17:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin