+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17156 Kennethseitz (1999 KS3) Classification: Outer Main-belt Asteroid          SPK-ID: 2017156 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04159253056951497 2.569e-08   a 3.202962640365156 1.927e-08 au q 3.069743318832754 8.3761e-08 au i 25.50286818011875 9.1348e-07 deg node 229.8361771684699 3.6244e-06 deg peri 217.660858377808 1.598e-05 deg M 60.43153668743922 1.7475e-05 deg tp 2458849.030718521547 (2019-Dec-31.53071852) 0.0001002 TDB period 2093.756807586567 5.73 1.8895e-05 5.173e-08 d yr n .1719397394652367 1.5517e-09 deg/d Q 3.336181961897558 2.0072e-08 au   Orbit Determination Parameters    # obs. used (total)      1669      data-arc span      14206 days (38.89 yr)      first obs. used      1982-04-22      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45839      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:55:46   Additional Information  Earth MOID = 2.09978 au   Jupiter MOID = 1.89951 au   T_jup = 3.040  [ 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 12.68   n/a E2021B10   diameter diameter 16.131 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17156 Kennethseitz           Discovered 1999 May 19 by Spacewatch at Kitt Peak. After 31 years, Kenneth Seitz (b. 1941) is retiring in 2009 as director of Cantilena, a women's chorale in Arlington, Massachusetts. He has delighted audiences as a conductor and pianist, contributing significantly to the treble-voice repertoire through his compositions, arrangements and research. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20090409/MPCPages.arc Last Updated: 2009-04-10 [ show close-approach data ] Alternate Designations  1999 KS3 = 1990 WU12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 17:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin