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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09052482183302082 7.7754e-08  
a 3.13455418786931 4.2345e-08 AU
q 2.850799228486491 2.4158e-07 AU
i 11.24146190883692 8.4536e-06 deg
node 173.0661126717008 2.9651e-05 deg
peri 211.3582120039935 4.7885e-05 deg
M 286.0417852800159 4.3496e-05 deg
tp 2457416.933844428363
(2016-Jan-29.43384443)
0.00024928 JED
period 2027.038978182666
5.55
4.1076e-05
1.125e-07
d
yr
n .1775989528937212 3.5988e-09 deg/d
Q 3.418309147252129 4.6179e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      919  
   data-arc span      7615 days (20.85 yr)  
   first obs. used      1993-09-16  
   last obs. used      2014-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54426  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:20:28  

Additional Information
 Earth MOID = 1.85927 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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