+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11593 Uchikawa (1995 HK) Classification: Main-belt Asteroid          SPK-ID: 2011593 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09337662039812918 3.8146e-08   a 2.215422585881739 5.5253e-09 au q 2.008553912058418 8.5263e-08 au i 2.594834324863005 3.1181e-06 deg node 132.1708826590782 8.8572e-05 deg peri 77.11504338511105 9.0035e-05 deg M 285.7395616365066 1.7473e-05 deg tp 2459448.949600705157 (2021-Aug-22.44960071) 5.8725e-05 TDB period 1204.434800344866 3.30 4.5058e-06 1.234e-08 d yr n .298895382213235 1.1182e-09 deg/d Q 2.422291259705061 6.0412e-09 au   Orbit Determination Parameters    # obs. used (total)      2007      data-arc span      9408 days (25.76 yr)      first obs. used      1995-04-20      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49259      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:01:26   Additional Information  Earth MOID = 1.00418 au   Jupiter MOID = 2.53706 au   T_jup = 3.647  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.23   n/a E2021B10   11593 Uchikawa           Discovered 1995 Apr. 20 by K. Endate and K. Watanabe at Kitami. Yoshihisa Uchikawa (b. 1947) is one of the leading amateur astronomers from Saga prefecture and the Kyushu district. He was president of the Saga Astronomical Society from 1988 to 1998 and remains a scholar and popularizer of astronomy. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030106/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1995 HK = 1998 CN3 = A909 DB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 17:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin