+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120545 (1994 WS) Classification: Main-belt Asteroid          SPK-ID: 2120545 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .217921506084114 3.0766e-08   a 2.218118672590476 6.4766e-09 au q 1.734742910786264 7.0529e-08 au i 1.983014528921948 3.0687e-06 deg node 49.41037508625206 9.7811e-05 deg peri 297.9604659884112 9.8229e-05 deg M 15.4519335146534 7.2858e-06 deg tp 2459148.708805968876 (2020-Oct-26.20880597) 2.4438e-05 TDB period 1206.634097507822 3.30 5.2848e-06 1.447e-08 d yr n .298350594222012 1.3067e-09 deg/d Q 2.701494434394688 7.888e-09 au   Orbit Determination Parameters    # obs. used (total)      1239      data-arc span      10609 days (29.05 yr)      first obs. used      1991-12-27      last obs. used      2021-01-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49233      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:25:18   Additional Information  Earth MOID = .727353 au   Jupiter MOID = 2.71898 au   T_jup = 3.620  [ 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 16.12   n/a E2021B55   diameter diameter 3.126 km 1.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.079   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   120545 (1994 WS)          Discovered 1994-Nov-25 by Kobayashi, T. at Oizumi Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2144-Feb-17 04:42 < 00:01 Vesta 0.0285290386279536 0.0285141132822819 0.0285439834607606 5.05939164279008 5.05939081844474 2504186.695637967 0.691282102440081 1391.02431746719 53.4288504091636 57.7763751800278 67414.3164016383 T 23 CATAB v2.0f-lin.ifort 2021-Feb-24 09:25:20 2021-Feb-24 09:25 Alternate Designations  1994 WS = 2002 AL172  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 09:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin