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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2162851875940645 6.4005e-08  
a 2.746047198109684 2.2729e-08 AU
q 2.152117864724376 1.7725e-07 AU
i 9.119678950491991 6.4718e-06 deg
node 96.72436042710504 4.198e-05 deg
peri 266.7492355578027 4.4747e-05 deg
M 186.481872124209 1.546e-05 deg
tp 2457801.629595146395
(2017-Feb-17.12959515)
7.4583e-05 JED
period 1662.112528433639
4.55
2.0636e-05
5.65e-08
d
yr
n .2165918334899148 2.6891e-09 deg/d
Q 3.339976531494993 2.7645e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      944  
   data-arc span      11822 days (32.37 yr)  
   first obs. used      1982-01-26  
   last obs. used      2014-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52921  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:22:42  

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 MPO309248  

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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