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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2159467959842315 6.7627e-08  
a 2.746907194612785 2.3462e-08 AU
q 2.15372138707012 1.8784e-07 AU
i 9.120005525067404 7.2284e-06 deg
node 96.73217129865046 4.386e-05 deg
peri 266.7928785735755 4.7232e-05 deg
M 143.1065891687097 1.7062e-05 deg
tp 2456139.469440897398
(2012-Jul-30.96944090)
7.7408e-05 JED
period 1662.893390578896
4.55
2.1304e-05
5.833e-08
d
yr
n .2164901262098797 2.7736e-09 deg/d
Q 3.340093002155449 2.8528e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      926  
   data-arc span      11739 days (32.14 yr)  
   first obs. used      1982-01-26  
   last obs. used      2014-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55377  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:02:14  

Additional Information
 Earth MOID = 1.17335 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 12.8 mag n/a MPO256956  

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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