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12391 Ecoadachi (1994 WE2)
Classification: Main-belt Asteroid          SPK-ID: 2012391
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .216285213145274 6.2319e-08  
a 2.746047210331786 2.1186e-08 AU
q 2.15211780413819 1.7388e-07 AU
i 9.119675481226951 5.5553e-06 deg
node 96.72435320338191 4.1501e-05 deg
peri 266.7492309033872 4.3525e-05 deg
M 186.4818768176864 1.5015e-05 deg
tp 2457801.629578825207
(2017-Feb-17.12957883)
7.3361e-05 JED
period 1662.112539530229
4.55
1.9235e-05
5.266e-08
d
yr
n .2165918320439051 2.5065e-09 deg/d
Q 3.339976616525381 2.5768e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      12185 days (33.36 yr)  
   first obs. used      1982-01-26  
   last obs. used      2015-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52661  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:09:33  

Additional Information
 Earth MOID = 1.17316 AU 
 T_jup = 3.295 
[ 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 12.9 mag n/a MPO337363  

12391 Ecoadachi           Discovered 1994 Nov. 26 by K. Endate and K. Watanabe at Kitami.
Adachi Ward is one of 23 wards of Tokyo and is located in a natural environment in the city. The public administration and its inhabitants proceed together to preserve the native environment so that it may be passed to the next generation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

[ show close-approach data ]
Alternate Designations
 1994 WE2 = 1982 BN7 = 1991 CN6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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