+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8416 Okada (1996 VB8) Classification: Main-belt Asteroid          SPK-ID: 2008416 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1956142209834821 2.9745e-08   a 2.152915167427 5.6706e-09 au q 1.731774344107245 6.2492e-08 au i 3.316137196094838 3.712e-06 deg node 169.9936773982876 4.6622e-05 deg peri 130.5069895249246 4.8266e-05 deg M 243.3795837176368 1.5655e-05 deg tp 2459374.275550272978 (2021-Jun-08.77555027) 5.1125e-05 TDB period 1153.821966922802 3.16 4.5586e-06 1.248e-08 d yr n .3120065402811717 1.2327e-09 deg/d Q 2.574055990746756 6.7799e-09 au   Orbit Determination Parameters    # obs. used (total)      2552      data-arc span      14524 days (39.76 yr)      first obs. used      1980-09-06      last obs. used      2020-06-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47632      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 16:48:51   Additional Information  Earth MOID = .71861 au   Jupiter MOID = 2.64841 au   T_jup = 3.676  [ 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 13.9   n/a MPO458913   diameter diameter 4.198 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.252   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   8416 Okada           Discovered 1996 Nov. 3 by S. Ueda and H. Kaneda at Kushiro. Yoshiyuki Okada (b. 1947), a member of Shirakawa Observatory in Japan and Chiro Observatory in Australia, is a talented amateur who played an important role in developing large portable telescopes, including the 0.84-m Chiro Telescope. These telescopes went on nationwide tours to show the beauty of the starry sky. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010109/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1996 VB8 = 1980 RP8 = 1980 TG10 = 1986 LA1 = 1988 AO  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 08:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin