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8731 Tejima (1996 WY)
Classification: Main-belt Asteroid          SPK-ID: 2008731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220586692134059 3.3162e-08  
a 2.310444078245941 7.2742e-09 au
q 2.028434348763247 7.829e-08 au
i 7.308921067381627 3.2824e-06 deg
node 62.91840170876262 2.8817e-05 deg
peri 301.985813806027 3.2026e-05 deg
M 4.014998526456822 1.3622e-05 deg
tp 2459186.193792877989
(2020-Dec-02.69379288)
4.854e-05 TDB
period 1282.748805506808
3.51
6.0579e-06
1.659e-08
d
yr
n .2806473086971737 1.3254e-09 deg/d
Q 2.592453807728635 8.1621e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1774  
   data-arc span      10903 days (29.85 yr)  
   first obs. used      1991-04-08  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:50:53  

Additional Information
 Earth MOID = 1.03697 au 
 Jupiter MOID = 2.88545 au 
 T_jup = 3.564 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO473885  

8731 Tejima           Discovered 1996 Nov. 19 by T. Kobayashi at Oizumi.
During the 1870s Seiichi Tejima (1849-1918) contributed to the development of the Educational Museum (now the National Science Museum of Japan). He advocated the importance of technological education. He was also a founder of the Vocational School for Girls (now Kyoritsu Women's University).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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