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12278 Kisohinoki (1990 WQ2)
Classification: Main-belt Asteroid          SPK-ID: 2012278
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699683030106791 7.2366e-08  
a 2.681331825513861 2.0339e-08 AU
q 2.225590405322744 1.9254e-07 AU
i 6.612310921691695 7.9484e-06 deg
node 215.3610683533372 5.7015e-05 deg
peri 217.1813597188759 6.1287e-05 deg
M 120.8130018503581 2.0556e-05 deg
tp 2456262.310220551204
(2012-Nov-30.81022055)
9.0094e-05 JED
period 1603.704217543969
4.39
1.8247e-05
4.996e-08
d
yr
n .2244802975896207 2.5541e-09 deg/d
Q 3.137073245704978 2.3796e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      937  
   data-arc span      8535 days (23.37 yr)  
   first obs. used      1990-11-14  
   last obs. used      2014-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53818  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:02:00  

Additional Information
 Earth MOID = 1.24318 AU 
 T_jup = 3.346 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO256955  

12278 Kisohinoki           Discovered 1990 Nov. 21 by K. Endate and K. Watanabe at Kitami.
Japanese cypresses (hinoki), especially the Kiso cypresses, were used as building materials for castles during the Edo era. They were protected like human beings. The Kiso cypresses form a natural forest 400 years old.
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

[ show close-approach data ]
Alternate Designations
 1990 WQ2 = 1996 EK12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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