+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100170 (1993 UE8) Classification: Main-belt Asteroid          SPK-ID: 2100170 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2125676039947331 5.7485e-08   a 3.021583114965235 2.5659e-08 au q 2.379292431946133 1.8341e-07 au i 6.125947383283326 4.0842e-06 deg node 100.5605387216476 6.4587e-05 deg peri 313.5861127618647 6.609e-05 deg M 6.9288828532701 1.4531e-05 deg tp 2458963.575811256208 (2020-Apr-24.07581126) 7.7182e-05 TDB period 1918.448937477931 5.25 2.4437e-05 6.69e-08 d yr n .1876515934134115 2.3903e-09 deg/d Q 3.663873797984337 3.1114e-08 au   Orbit Determination Parameters    # obs. used (total)      542      data-arc span      9509 days (26.03 yr)      first obs. used      1993-10-10      last obs. used      2019-10-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55912      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 11:51:58   Additional Information  Earth MOID = 1.39599 au   Jupiter MOID = 1.71864 au   T_jup = 3.203  [ 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 15.1   n/a MPO493563   diameter diameter 5.823 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.052   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100170 (1993 UE8)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1993 UE8 = 2003 QU95  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-24 05:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin