+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   29473 Krejci (1997 UE8) Classification: Main-belt Asteroid          SPK-ID: 2029473 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09583740656370081 4.8403e-08   a 2.740102591549591 1.235e-08 au q 2.477498265457003 1.3573e-07 au i 1.538407058909232 4.4366e-06 deg node 48.27026385353998 0.00018915 deg peri 291.8542494649441 0.00019054 deg M 45.45610715668186 2.2397e-05 deg tp 2458791.311213094377 (2019-Nov-03.81121309) 0.00010294 TDB period 1656.718271682317 4.54 1.12e-05 3.066e-08 d yr n .2172970541541969 1.469e-09 deg/d Q 3.00270691764218 1.3533e-08 au   Orbit Determination Parameters    # obs. used (total)      810      data-arc span      10754 days (29.44 yr)      first obs. used      1991-06-03      last obs. used      2020-11-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60227      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:32:14   Additional Information  Earth MOID = 1.46927 au   Jupiter MOID = 2.32961 au   T_jup = 3.343  [ 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 15.3   n/a MPO351031   29473 Krejčí           Discovered 1997 Oct. 21 by P. Pravec and L. Šarounová at Ondřejov. František Krejčí (1901-1984), an honorary member of the Czechoslovak Astronomical Society, in 1963 founded the public observatory in Karlovy Vary and led it for 20 years, including its rebuilding after a disastrous fire in 1971. He operated an all-sky patrol camera for the European fireball network. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020427/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1997 UE8 = 2000 HF9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 03:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin