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8314 Tsuji (1997 US8)
Classification: Main-belt Asteroid          SPK-ID: 2008314
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1261272677978967 3.8256e-08  
a 3.1797088145695 1.7159e-08 au
q 2.77866082939496 1.2114e-07 au
i 1.48234318247819 4.2354e-06 deg
node 165.4119096202156 0.00016436 deg
peri 40.92650929553341 0.00016517 deg
M 124.8219517512685 1.6457e-05 deg
tp 2457882.428117613174
(2017-May-08.92811761)
9.3734e-05 TDB
period 2070.996920272321
5.67
1.6764e-05
4.59e-08
d
yr
n .1738293265799075 1.407e-09 deg/d
Q 3.58075679974404 1.9323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1834  
   data-arc span      11286 days (30.90 yr)  
   first obs. used      1988-01-22  
   last obs. used      2018-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52134  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:55:06  

Additional Information
 Earth MOID = 1.77485 au 
 Jupiter MOID = 1.37964 au 
 T_jup = 3.187 
[ 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 MPO416804  
diameter diameter 13.775 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8314 Tsuji           Discovered 1997 Oct. 25 by K. Endate and K. Watanabe at Kitami.
Named in honor of Takashi Tsuji (b. 1937), Japanese astronomer working mainly on stellar atmospheres and spectroscopy. His major interest extends from cool luminous stars such as red giants, supergiants and carbon stars to very low luminous objects, including brown dwarfs. He received the academy prize of the Japan Academy in 1984 for "Theoretical studies of the outer layers of cool stars". He served as the director of the Institute of Astronomy, Faculty of Science, University of Tokyo, during 1992-1996. He has been professor emeritus of the University of Tokyo since 1998.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1997 US8 = 1988 BB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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