+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11546 Miyoshimachi (1992 UM6) Classification: Main-belt Asteroid          SPK-ID: 2011546 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .1821958786851633 1.3581e-08   a 2.337130312893078 6.5396e-09 au q 1.911314801933793 3.2721e-08 au i 3.722147645411338 4.655e-07 deg node 302.9887964230951 1.2435e-05 deg peri 132.1228886057974 1.2106e-05 deg M 292.0289411501117 5.7144e-06 deg tp 2459446.902071124940 (2021-Aug-20.40207112) 2.131e-05 TDB period 1305.036983473801 3.57 5.4775e-06 1.5e-08 d yr n .2758542513038499 1.1578e-09 deg/d Q 2.762945823852363 7.7311e-09 au   Orbit Determination Parameters    # obs. used (total)      2216      data-arc span      15333 days (41.98 yr)      first obs. used      1979-01-27      last obs. used      2021-01-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45564      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:50:01   Additional Information  Earth MOID = .928412 au   Jupiter MOID = 2.49769 au   T_jup = 3.542  [ 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 13.98   n/a E2021B10   rotation period rot_per 8.35 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Rowe, B. (2018) Minor Planet Bull. 45, 292-294.] 11546 Miyoshimachi           Discovered 1992 Oct. 28 by M. Yanai and K. Watanabe at Kitami. Miyoshi Town, located in Saitama, was founded by the Kawagoe feudal lord, Yanagisawa Yoshiyasu, in 1694. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20111210/MPCPages.arc Last Updated: 2011-12-12 [ show close-approach data ] Alternate Designations  1992 UM6 = 1979 BZ2 = 1981 SY5 = 1988 QJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 19:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin