+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .137099424721183 5.7461e-08   a 3.157630337982753 3.0609e-08 au q 2.724721035163163 1.9345e-07 au i 10.84634007428745 6.1678e-06 deg node 60.05399606644267 2.6947e-05 deg peri 355.5027406993291 3.3308e-05 deg M 356.0340910154209 1.9227e-05 deg tp 2459023.077746801156 (2020-Jun-22.57774680) 0.00010958 TDB period 2049.464291798112 5.61 2.9801e-05 8.159e-08 d yr n .1756556586229426 2.5542e-09 deg/d Q 3.590539640802342 3.4806e-08 au   Orbit Determination Parameters    # obs. used (total)      449      data-arc span      8070 days (22.09 yr)      first obs. used      1997-10-23      last obs. used      2019-11-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52433      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 01:08:34   Additional Information  Earth MOID = 1.73675 au   Jupiter MOID = 1.77358 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 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 ] 2020-Oct-21 03:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin