+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04156475142087671 4.7368e-08   a 3.203193239050943 2.2145e-08 au q 3.070053308316758 1.5384e-07 au i 25.503370831147 6.0532e-06 deg node 229.8454817886642 9.9931e-06 deg peri 217.8422546295257 6.7399e-05 deg M 25.86891260710433 6.4395e-05 deg tp 2458850.030385452238 (2020-Jan-01.53038545) 0.00037497 TDB period 2093.982923051744 5.73 2.1715e-05 5.945e-08 d yr n .1719211728218588 1.7829e-09 deg/d Q 3.336333169785129 2.3066e-08 au   Orbit Determination Parameters    # obs. used (total)      1472      data-arc span      13879 days (38.00 yr)      first obs. used      1982-04-22      last obs. used      2020-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46235      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:32:49   Additional Information  Earth MOID = 2.10093 au   Jupiter MOID = 1.90009 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 12.7   n/a MPO502300   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 ] 2020-Sep-19 03:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin