+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21390 Shindo (1998 FV28) Classification: Main-belt Asteroid          SPK-ID: 2021390 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1418778890711782 3.2524e-08   a 2.46805576007675 7.2917e-09 au q 2.117893218727098 8.0831e-08 au i 1.876198296626116 3.7755e-06 deg node 61.80873512269845 0.00010091 deg peri 59.53210528883021 0.00010168 deg M 351.8095072821357 1.1818e-05 deg tp 2459232.720954799918 (2021-Jan-18.22095480) 4.6493e-05 TDB period 1416.220504374648 3.88 6.2762e-06 1.718e-08 d yr n .2541977035976916 1.1265e-09 deg/d Q 2.818218301426402 8.3262e-09 au   Orbit Determination Parameters    # obs. used (total)      1735      data-arc span      11397 days (31.20 yr)      first obs. used      1989-12-30      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48905      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:44:39   Additional Information  Earth MOID = 1.13441 au   Jupiter MOID = 2.24972 au   T_jup = 3.471  [ 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 14.6   n/a MPO299116   diameter diameter 3.341 km 0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.251   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21390 Shindo           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Shindo Akihiko (b. 1960), a 2004 Intel International Science and Engineering Fair Excellence in Teaching Award finalist, is a teacher at the Okayama Ichinomiya Senior High School, Souja, Okayama, Japan. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20041226/MPCPages.arc Last Updated: 2004-12-25 Alternate Designations  1998 FV28 = 1989 YT3 = 1990 BM6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-16 12:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin