+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   17857 Hsieh (1998 KR1) Classification: Main-belt Asteroid          SPK-ID: 2017857 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250389 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2019132 n/a   a 2.6957147 n/a AU q 2.1514143 n/a AU i 13.24743 n/a deg node 51.23885 n/a deg peri 270.43795 n/a deg M 64.78988 n/a deg tp 2456109.5529298 (2012-Jul-01.05292980) n/a JED period 1616.6250850 4.43 n/a n/a d yr n 0.22268614 n/a deg/d Q 3.2400151 n/a AU   Orbit Determination Parameters    # obs. used (total)      758      first obs. used      1976-??-??      last obs. used      2013-01-08      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.303  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.2 mag n/a PDS3 (MPO 4174)   17857 Hsieh           Discovered 1998 May 18 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Henry H. Hsieh (b. 1978) has studied the nature of the comet-like Themis-family minor planet (7968) = 133P/Elst-Pizarro and has surveyed the main belt for examples of similar transition objects. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050721/MPCPages.arc Last Updated: 2005-07-21 Alternate Designations  1998 KR1 = 1968 UW2 = 1999 SF4  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 16:49 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin