+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4320 Jarosewich (1981 EJ17) Classification: Main-belt Asteroid          SPK-ID: 2004320 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1136983570241992 6.69e-08   a 2.196946525861505 1.2814e-08 AU q 1.94715731540103 1.5046e-07 AU i 6.445938660867423 8.418e-06 deg node 191.0318996546825 6.2384e-05 deg peri 277.4475892492487 8.2771e-05 deg M 4.62123340595149 4.6486e-05 deg tp 2456385.231968068627 (2013-Apr-02.73196807) 0.00015363 JED period 1189.399238786694 3.26 1.0406e-05 2.849e-08 d yr n .3026738106602758 2.648e-09 deg/d Q 2.446735736321981 1.4271e-08 AU   Orbit Determination Parameters    # obs. used (total)      667      data-arc span      21786 days (59.65 yr)      first obs. used      1953-08-16      last obs. used      2013-04-09      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .55043      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:02:47   Additional Information  Earth MOID = .975547 AU   T_jup = 3.651  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3 mag n/a PDS3 (MPC 28111)   4320 Jarosewich           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey. Eugene Jarosewich (b. 1926), research chemist emeritus at the Smithsonian Institution, has analyzed meteorites for more than 30 years and compiled one of the largest and most important sets of bulk chemical analyses of meteorites. These data are invaluable for deciphering geochemical processing of meteorites. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001013/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1981 EJ17 = 1976 UE13  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 07:28 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin