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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2162851871969051 6.3982e-08  
a 2.746047197899814 2.2696e-08 AU
q 2.152117865650516 1.7721e-07 AU
i 9.119679006688225 6.4515e-06 deg
node 96.7243604133206 4.198e-05 deg
peri 266.7492358534901 4.4729e-05 deg
M 186.4818719921048 1.5449e-05 deg
tp 2457801.629595664477
(2017-Feb-17.12959566)
7.4551e-05 JED
period 1662.112528243095
4.55
2.0606e-05
5.642e-08
d
yr
n .2165918335147448 2.6852e-09 deg/d
Q 3.339976530149112 2.7605e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      948  
   data-arc span      12056 days (33.01 yr)  
   first obs. used      1982-01-26  
   last obs. used      2015-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52821  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:34:44  

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 12.8 mag n/a MPO324423  

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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