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9368 Esashi (1993 BS3)
Classification: Main-belt Asteroid          SPK-ID: 2009368
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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 2-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 has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1171103044123485 6.1191e-08  
a 2.310095941117358 1.1018e-08 au
q 2.039559902231374 1.3973e-07 au
i 6.849739349026786 5.6859e-06 deg
node 295.4347024982545 3.5705e-05 deg
peri 213.0167754633238 4.03e-05 deg
M 239.4598837926418 1.7573e-05 deg
tp 2458029.910398987443
6.3182e-05 JED
period 1282.45889003086
n .2807107524447331 2.0082e-09 deg/d
Q 2.580631980003343 1.2308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      8763 days (23.99 yr)  
   first obs. used      1991-09-15  
   last obs. used      2015-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45645  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:39:01  

Additional Information
 Earth MOID = 1.05418 au 
 Jupiter MOID = 2.4504 au 
 T_jup = 3.566 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO296213  
rotation period rot_per 2.9183 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Pray, D.P.; Galad, A.; Husark, M.; Oey, J. (2008) Minor Planet Bul. 35, 34-37.]
[Galad, A. (2010) Astron. Astrophys. 514, A55.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

9368 Esashi           Discovered 1993 Jan. 26 by M. Mukai and M. Takeishi at Kagoshima.
Named for a small town in northern Hokkaido, on the Sea of Okhotsk, not far from the home of the second discoverer. Known as "The Town of the Solar Eclipse", it was visited by astronomers from all over the world during the total solar eclipses of 1896 Aug. 9 and 1936 June 19. After the former eclipse the American astronomer David P. Todd gave many books to the town, and these became the nucleus of the first public library to be established in Hokkaido.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1993 BS3 = 1991 RS37 = 1995 UL44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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