+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8735 Yoshiosakai (1997 AA1) Classification: Main-belt Asteroid          SPK-ID: 2008735 [ 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 .2125810318786006 3.9397e-08   a 3.196035359356235 1.4774e-08 au q 2.516618864743793 1.2505e-07 au i 1.940356655422672 3.935e-06 deg node 50.86511656526961 0.0001332 deg peri 341.5475670505767 0.00013352 deg M 123.1178937913118 1.0216e-05 deg tp 2458486.769153757295 (2019-Jan-03.26915376) 5.7174e-05 TDB period 2086.968000629538 5.71 1.4471e-05 3.962e-08 d yr n .1724990512031834 1.1961e-09 deg/d Q 3.875451853968678 1.7915e-08 au   Orbit Determination Parameters    # obs. used (total)      2056      data-arc span      17692 days (48.44 yr)      first obs. used      1972-10-06      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47994      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 20:50:59   Additional Information  Earth MOID = 1.52167 au   Jupiter MOID = 1.56754 au   T_jup = 3.159  [ 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 13.04   n/a E2021B10   diameter diameter 13.208 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.077   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   8735 Yoshiosakai           Discovered 1997 Jan. 2 by T. Kobayashi at Oizumi. Sakai Yoshio (1923-2002) is a pioneer in building astronomical observatories for the general public. He established the Hidahiko Tenmondai at his own expense. He also toiled as director of Ogawa Astronomical Observatory (founded in 1991), contributing much to education in astronomy. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20061109/MPCPages.arc Last Updated: 2006-11-13 [ show close-approach data ] Alternate Designations  1997 AA1 = 1972 TR1 = 1978 TZ8  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 15:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin