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12357 Toyako (1993 ST1)
Classification: Main-belt Asteroid          SPK-ID: 2012357
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09063395412064766 8.7314e-08  
a 3.134353812712314 4.3444e-08 AU
q 2.850274933053069 2.7217e-07 AU
i 11.24098416796398 9.3549e-06 deg
node 173.0732224712676 3.2558e-05 deg
peri 211.3900191946381 5.1536e-05 deg
M 250.4932185808076 4.551e-05 deg
tp 2457417.036750556889
(2016-Jan-29.53675056)
0.00026266 JED
period 2026.844614771775
5.55
4.214e-05
1.154e-07
d
yr
n .1776159836705274 3.6928e-09 deg/d
Q 3.418432692371558 4.7381e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      911  
   data-arc span      7252 days (19.85 yr)  
   first obs. used      1993-09-16  
   last obs. used      2013-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5633  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 19:49:54  

Additional Information
 Earth MOID = 1.8575 AU 
 T_jup = 3.176 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO267756  

12357 Toyako           Discovered 1993 Sept. 16 by K. Endate and K. Watanabe at Kitami.
Lake Toya (Toyako) is part of Shikotsu-Toya National Park in Hokkaido.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1993 ST1 = 1998 QN10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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