+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09350261017950125 4.2042e-08   a 2.215191219720542 5.8123e-09 au q 2.008065058629958 9.3136e-08 au i 2.594752830513463 3.1499e-06 deg node 132.172929266778 9.9338e-05 deg peri 77.15626872502968 0.00010066 deg M 225.9234271553788 1.7789e-05 deg tp 2459449.003316129821 (2021-Aug-22.50331613) 6.0091e-05 TDB period 1204.246128768893 3.30 4.7397e-06 1.298e-08 d yr n .2989422107323109 1.1766e-09 deg/d Q 2.422317380811126 6.3558e-09 au   Orbit Determination Parameters    # obs. used (total)      1800      data-arc span      9055 days (24.79 yr)      first obs. used      1995-04-20      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50468      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 20:05:36   Additional Information  Earth MOID = 1.00464 au   Jupiter MOID = 2.53819 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 14.3   n/a MPO395112   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 ] 2020-Oct-21 02:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin