+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14859 (1989 WU1) Classification: Main-belt Asteroid          SPK-ID: 2014859 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2769517506097269 2.6296e-08   a 2.591559550757013 9.4766e-09 au q 1.873822596365501 6.5811e-08 au i 9.983308807905001 1.0576e-06 deg node 226.3628345010829 3.2417e-06 deg peri 112.7520501235296 4.1719e-06 deg M 217.2858042845432 7.3554e-06 deg tp 2459804.594511102583 (2022-Aug-13.09451110) 3.3633e-05 TDB period 1523.842970958047 4.17 8.3584e-06 2.288e-08 d yr n .2362448144992698 1.2958e-09 deg/d Q 3.309296505148525 1.2101e-08 au   Orbit Determination Parameters    # obs. used (total)      1725      data-arc span      17692 days (48.44 yr)      first obs. used      1972-10-06      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47221      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:40:54   Additional Information  Earth MOID = .891155 au   Jupiter MOID = 2.23606 au   T_jup = 3.344  [ 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 13.74   n/a E2021B10   diameter diameter 4.327 km 0.676 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   geometric albedo albedo 0.366   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   14859 (1989 WU1)          Discovered 1989-Nov-25 by Ueda, S., Kaneda, H. at Kushiro Reference: 20000523/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1989 WU1 = 1972 TD6 = 1997 LG6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 11:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin