+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101379 (1998 UE16) Classification: Main-belt Asteroid          SPK-ID: 2101379 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1935808848775818 4.3824e-08   a 2.359566127316321 1.3061e-08 au q 1.902799228463259 1.0235e-07 au i 7.222287943495117 5.433e-06 deg node 62.81400109185908 4.9351e-05 deg peri 26.58589131778204 5.3422e-05 deg M 304.7787416980022 2.2699e-05 deg tp 2459203.572190808544 (2020-Dec-20.07219081) 8.4628e-05 TDB period 1323.874010462941 3.62 1.0992e-05 3.009e-08 d yr n .2719291995724826 2.2579e-09 deg/d Q 2.816333026169383 1.559e-08 au   Orbit Determination Parameters    # obs. used (total)      516      data-arc span      8051 days (22.04 yr)      first obs. used      1998-10-12      last obs. used      2020-10-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57865      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:00:56   Additional Information  Earth MOID = .922118 au   Jupiter MOID = 2.40976 au   T_jup = 3.516  [ 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 16.0   n/a MPO299590   diameter diameter 1.362 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.416   0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101379 (1998 UE16)          Discovered 1998-Oct-23 by ODAS at Caussols Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 UE16 = 2002 XJ81  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-01 00:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin