+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100633 (1997 UX13) Classification: Main-belt Asteroid          SPK-ID: 2100633 [ 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 .137338082689856 4.63e-08   a 3.158494274738202 2.3602e-08 au q 2.72471272685877 1.4826e-07 au i 10.84514199796975 5.4655e-06 deg node 60.05250306796773 2.3241e-05 deg peri 355.5061902622832 2.9935e-05 deg M 31.14964868203797 1.7021e-05 deg tp 2459023.093625783942 (2020-Jun-22.59362578) 9.6645e-05 TDB period 2050.305458327965 5.61 2.2982e-05 6.292e-08 d yr n .1755835934288454 1.9681e-09 deg/d Q 3.592275822617634 2.6844e-08 au   Orbit Determination Parameters    # obs. used (total)      555      data-arc span      8487 days (23.24 yr)      first obs. used      1997-10-23      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50513      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:25:51   Additional Information  Earth MOID = 1.736 au   Jupiter MOID = 1.77272 au   T_jup = 3.163  [ 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 15.0   n/a MPO314092   diameter diameter 4.258 km 1.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.107   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100633 (1997 UX13)          Discovered 1997-Oct-23 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 UX13 = 2003 WS121  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-09 05:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin