+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14193 (1998 XZ40) Classification: Main-belt Asteroid          SPK-ID: 2014193 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1994095423026093 3.6173e-08   a 3.143064704767848 1.4084e-08 au q 2.516307610562606 1.1173e-07 au i 8.035847538504774 4.0747e-06 deg node 15.52702657281756 2.2583e-05 deg peri 11.32767903709899 2.4455e-05 deg M 24.02705006591226 7.9135e-06 deg tp 2459064.660410019783 (2020-Aug-03.16041002) 4.4878e-05 TDB period 2035.299891527549 5.57 1.368e-05 3.745e-08 d yr n .1768781109351949 1.1889e-09 deg/d Q 3.76982179897309 1.6892e-08 au   Orbit Determination Parameters    # obs. used (total)      1903      data-arc span      14300 days (39.15 yr)      first obs. used      1981-11-24      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49014      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:16:38   Additional Information  Earth MOID = 1.51993 au   Jupiter MOID = 1.70063 au   T_jup = 3.164  [ 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 13.10   n/a E2021B10   diameter diameter 8.591 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.166   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14193 (1998 XZ40)          Discovered 1998-Dec-14 by LINEAR at Socorro Reference: 20000320/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 XZ40 = 1981 WZ4 = 1992 WF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 19:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin