Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

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 ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
5.8297e-05 TDB
period 2087.475310935857
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] (  
geometric albedo albedo 0.077   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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.arcLast 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 ]
FirstGov 2020-May-25 22:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin