+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18322 Korokan (1982 VF5) Classification: Main-belt Asteroid          SPK-ID: 2018322 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1635495568205253 4.8206e-08   a 2.702785323216329 1.3459e-08 au q 2.260745981423278 1.3483e-07 au i 5.340090780650947 4.8774e-06 deg node 205.839280470902 4.2605e-05 deg peri 154.8199871964738 4.3989e-05 deg M 242.373896164709 1.314e-05 deg tp 2459730.794308516027 (2022-May-31.29430852) 6.1225e-05 TDB period 1622.989666758755 4.44 1.2123e-05 3.319e-08 d yr n .2218128724867053 1.6568e-09 deg/d Q 3.14482466500938 1.566e-08 au   Orbit Determination Parameters    # obs. used (total)      1526      data-arc span      13707 days (37.53 yr)      first obs. used      1982-11-12      last obs. used      2020-05-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51616      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:26:29   Additional Information  Earth MOID = 1.25769 au   Jupiter MOID = 2.32617 au   T_jup = 3.341  [ 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 14.2   n/a MPO384911   diameter diameter 4.229 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.272   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18322 Korokan           Discovered 1982 Nov. 14 by H. Kosai and K. Hurukawa at Kiso. Korokan was a guest house for foreign envoys built in Chikushi (now Fukuoka city) in the 8th century. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2017-11-04 Last Updated: 2017-11-07 Alternate Designations  1982 VF5 = 1998 HG33  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 07:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin