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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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09063391002233992 7.8119e-08  
a 3.134353825073776 4.2357e-08 AU
q 2.850275082513863 2.4249e-07 AU
i 11.24098252715085 8.4981e-06 deg
node 173.0732640726538 2.9677e-05 deg
peri 211.3899353180505 4.7875e-05 deg
M 250.4932525334285 4.3121e-05 deg
tp 2457417.036563046729
(2016-Jan-29.53656305)
0.00024917 JED
period 2026.844626762171
5.55
4.1086e-05
1.125e-07
d
yr
n .1776159826197877 3.6004e-09 deg/d
Q 3.41843256763369 4.6196e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7581 days (20.76 yr)  
   first obs. used      1993-09-16  
   last obs. used      2014-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54412  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:28:17  

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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