+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2127529384883119 4.326e-08   a 3.022227651932192 1.9938e-08 au q 2.379239838202987 1.3349e-07 au i 6.125713268680008 3.8892e-06 deg node 100.560543318008 5.3313e-05 deg peri 313.5871131066294 5.5149e-05 deg M 44.44204003230887 1.2789e-05 deg tp 2458963.591482747019 (2020-Apr-24.09148275) 6.7314e-05 TDB period 1919.062809652086 5.25 1.899e-05 5.199e-08 d yr n .1875915671906881 1.8563e-09 deg/d Q 3.665215465661397 2.4179e-08 au   Orbit Determination Parameters    # obs. used (total)      624      data-arc span      9962 days (27.27 yr)      first obs. used      1993-10-10      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53841      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:24:37   Additional Information  Earth MOID = 1.39519 au   Jupiter MOID = 1.71818 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 ] 2021-Mar-03 04:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin