+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2123934872411133 3.9472e-08   a 3.196553276894942 1.4914e-08 au q 2.517626179263218 1.2531e-07 au i 1.940262296693374 4.0284e-06 deg node 50.87311499545062 0.00013584 deg peri 341.5743752908236 0.00013617 deg M 88.60041241037862 1.0287e-05 deg tp 2458486.746740429444 (2019-Jan-03.24674043) 5.8297e-05 TDB period 2087.475310935857 5.72 1.4609e-05 4e-08 d yr n .1724571294874883 1.2069e-09 deg/d Q 3.875480374526667 1.8081e-08 au   Orbit Determination Parameters    # obs. used (total)      1933      data-arc span      17369 days (47.55 yr)      first obs. used      1972-10-06      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48379      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:02:07   Additional Information  Earth MOID = 1.52382 au   Jupiter MOID = 1.56629 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 13.0   n/a MPO452293   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 ] 2020-Oct-01 08:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin