+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15906 Yoshikaneda (1997 SX21) Classification: Main-belt Asteroid          SPK-ID: 2015906 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1214202419024486 3.3655e-08   a 2.246147394473747 7.4207e-09 au q 1.97341963448819 7.7361e-08 au i 1.878371272594046 3.6463e-06 deg node 188.7898373950524 9.5943e-05 deg peri 192.1099972453949 9.6883e-05 deg M 260.5024568046591 1.3493e-05 deg tp 2459340.333087235478 (2021-May-05.83308724) 4.6489e-05 TDB period 1229.577208399863 3.37 6.0933e-06 1.668e-08 d yr n .2927835662052437 1.4509e-09 deg/d Q 2.518875154459304 8.3217e-09 au   Orbit Determination Parameters    # obs. used (total)      1725      data-arc span      8887 days (24.33 yr)      first obs. used      1996-04-17      last obs. used      2020-08-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52621      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:30:40   Additional Information  Earth MOID = .975953 au   Jupiter MOID = 2.92718 au   T_jup = 3.620  [ 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 15.1   n/a MPO431681   diameter diameter 2.489 km 0.576 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.197   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15906 Yoshikaneda           Discovered 1997 Sept. 30 by T. Okuni at Nanyo. Yosibumi Kaneda (b. 1937), a retired teacher of high school, is an amateur astronomer, active in the Nanyo Astronomy Lovers Club since 1983. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100923/MPCPages.arc Last Updated: 2010-12-06 [ show close-approach data ] Alternate Designations  1997 SX21 = 1996 HA13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 19:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin