+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11138 Hotakadake (1996 XC31) Classification: Main-belt Asteroid          SPK-ID: 2011138 [ 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 .1659724219748811 4.0148e-08   a 2.57622786670002 1.1396e-08 au q 2.148645088104637 1.0714e-07 au i 7.927827618481273 2.6636e-06 deg node 279.874743903732 3.1392e-05 deg peri 67.20106491287235 3.3509e-05 deg M 28.7332040482681 1.0231e-05 deg tp 2459079.953003667840 (2020-Aug-18.45300367) 4.326e-05 TDB period 1510.340392483769 4.14 1.0022e-05 2.744e-08 d yr n .2383568643145249 1.5816e-09 deg/d Q 3.003810645295404 1.3288e-08 au   Orbit Determination Parameters    # obs. used (total)      2077      data-arc span      12194 days (33.39 yr)      first obs. used      1987-08-30      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42742      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:58:51   Additional Information  Earth MOID = 1.15424 au   Jupiter MOID = 2.44149 au   T_jup = 3.394  [ 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 14.16   n/a E2021B10   diameter diameter 4.524 km 1.427 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.238   0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11138 Hotakadake           Discovered 1996 Dec. 14 by T. Kobayashi at Oizumi. Hotakadake is the generic name of several mountain peaks, some of them more than 3000 meters high, in central Japan. It is the most popular area for Japanese mountain climbers. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050125/MPCPages.arc Last Updated: 2005-06-01 [ show close-approach data ] Alternate Designations  1996 XC31 = 1987 QN3 = 1998 FF108  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-12 14:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin