+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227465 (2005 WR120) Classification: Main-belt Asteroid          SPK-ID: 2227465 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1476073649896012 5.8216e-08   a 2.620641008993296 1.9044e-08 au q 2.233815095072106 1.5025e-07 au i 17.81181186972915 5.4501e-06 deg node 82.94309575383257 3.2269e-05 deg peri 40.7574412201644 5.1976e-05 deg M 179.4819481625106 3.6916e-05 deg tp 2458427.947503747859 (2018-Nov-05.44750375) 0.00015861 TDB period 1549.564741736312 4.24 1.6891e-05 4.625e-08 d yr n .2323233036372615 2.5325e-09 deg/d Q 3.007466922914486 2.1855e-08 au   Orbit Determination Parameters    # obs. used (total)      280      data-arc span      9665 days (26.46 yr)      first obs. used      1992-12-16      last obs. used      2019-06-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .63822      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:39:52   Additional Information  Earth MOID = 1.27555 au   Jupiter MOID = 2.22873 au   T_jup = 3.322  [ 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 15.8   n/a MPO475861   227465 (2005 WR120)          Discovered 2005-Nov-29 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 14:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin