+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187590 (2006 WY104) Classification: Main-belt Asteroid          SPK-ID: 2187590 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1429267079036605 4.769e-08   a 2.390461573575131 1.3955e-08 au q 2.048800770493834 1.1923e-07 au i 4.557916961759809 4.8255e-06 deg node 76.70466326246047 6.2267e-05 deg peri 323.5888358834171 6.4962e-05 deg M 311.352959789533 1.8226e-05 deg tp 2459382.921069835333 (2021-Jun-17.42106984) 6.8953e-05 TDB period 1349.960549636688 3.70 1.1821e-05 3.236e-08 d yr n .2666744595587523 2.3351e-09 deg/d Q 2.732122376656428 1.5949e-08 au   Orbit Determination Parameters    # obs. used (total)      237      data-arc span      6561 days (17.96 yr)      first obs. used      2002-09-05      last obs. used      2020-08-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57003      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 07:49:25   Additional Information  Earth MOID = 1.05822 au   Jupiter MOID = 2.65954 au   T_jup = 3.514  [ 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 17.44   n/a E2021B55   187590 (2006 WY104)          Discovered 2006-Nov-19 by Spacewatch at Kitt Peak Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 17:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin