+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11154 Kobushi (1997 YD10) Classification: Main-belt Asteroid          SPK-ID: 2011154 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1093132753617662 8.1094e-09   a 2.317202466293426 6.8645e-09 au q 2.063901475026528 2.1964e-08 au i 5.146453101173905 2.7671e-07 deg node 329.4831891780458 6.0483e-06 deg peri 319.1906018580049 1.034e-05 deg M 8.191427610768894 1.0789e-05 deg tp 2459171.184217098151 (2020-Nov-17.68421710) 3.8601e-05 TDB period 1288.381262234585 3.53 5.725e-06 1.567e-08 d yr n .2794203940653494 1.2416e-09 deg/d Q 2.570503457560323 7.6149e-09 au   Orbit Determination Parameters    # obs. used (total)      2548      data-arc span      13383 days (36.64 yr)      first obs. used      1984-01-25      last obs. used      2020-09-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45393      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:33:34   Additional Information  Earth MOID = 1.049 au   Jupiter MOID = 2.57956 au   T_jup = 3.567  [ 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 13.63   n/a E2021B10   diameter diameter 5.214 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.163   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   11154 Kobushi           Discovered 1997 Dec. 28 by T. Kobayashi at Oizumi. Kobushi mountain (height 2475 meters) is located in the Oku-Chichibu area. The name means that the mountain stretches over three states, Koshu, Bushu and Shinshu. Kobushi, one of the 100 most celebrated mountains in Japan, has three riverheads, which flow into the Fuefuki, Chikuma and Arakawa rivers. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060413/MPCPages.arc Last Updated: 2006-04-17 [ show close-approach data ] Alternate Designations  1997 YD10 = 1984 BX5 = 1995 EC1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 20:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin