+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19652 Saris (1999 RC117) Classification: Main-belt Asteroid          SPK-ID: 2019652 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05856266577142347 3.5763e-08   a 2.772591339606169 1.419e-08 au q 2.61022099966407 9.6619e-08 au i 4.117854834155569 4.647e-06 deg node 215.4991396059937 5.557e-05 deg peri 84.17060056266097 7.2e-05 deg M 243.7509835361507 4.8137e-05 deg tp 2459745.020214367538 (2022-Jun-14.52021437) 0.00022669 TDB period 1686.270414453557 4.62 1.2945e-05 3.544e-08 d yr n .2134888905802569 1.6389e-09 deg/d Q 2.934961679548268 1.5021e-08 au   Orbit Determination Parameters    # obs. used (total)      1539      data-arc span      9239 days (25.30 yr)      first obs. used      1995-11-20      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49876      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:00:42   Additional Information  Earth MOID = 1.59675 au   Jupiter MOID = 2.17815 au   T_jup = 3.330  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.05   n/a E2021B10   diameter diameter 4.692 km 0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.242   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19652 Saris           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Patrick J. G. Saris (b. 1989) is a finalist in the 2003 Discovery Channel Young Scientist Challenge, a middle school science competition, for his engineering project. He attends the Viewpoint School, Calabasas, California. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20031010/MPCPages.arc Last Updated: 2003-10-10 Alternate Designations  1999 RC117 = 1995 WO32 = 1998 HZ64  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 18:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin