+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120616 (1995 WE33) Classification: Main-belt Asteroid          SPK-ID: 2120616 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1593049021493043 3.8055e-08   a 2.730248877898608 1.7726e-08 au q 2.295306847561722 1.0424e-07 au i 3.716451849148001 5.3246e-06 deg node 152.5644687715574 7.4597e-05 deg peri 288.0204518900422 7.7521e-05 deg M 171.3887457738497 2.281e-05 deg tp 2458416.020529711977 (2018-Oct-24.52052971) 0.00010003 TDB period 1647.789696041865 4.51 1.6047e-05 4.393e-08 d yr n .2184744818254122 2.1276e-09 deg/d Q 3.165190908235493 2.0549e-08 au   Orbit Determination Parameters    # obs. used (total)      569      data-arc span      9882 days (27.06 yr)      first obs. used      1993-05-20      last obs. used      2020-06-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57097      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:55:56   Additional Information  Earth MOID = 1.31399 au   Jupiter MOID = 2.07951 au   T_jup = 3.333  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.63   n/a E2021B55   diameter diameter 4.367 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120616 (1995 WE33)          Discovered 1995-Nov-20 by Spacewatch at Kitt Peak Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1995 WE33 = 2000 YW45  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 13:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin