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56957 Seohideaki (2000 SY20)
Classification: Main-belt Asteroid          SPK-ID: 2056957
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08267466763981331 6.4088e-08  
a 2.786087587727214 3.1169e-08 au
q 2.555748722396457 1.7672e-07 au
i 11.94881897014778 8.0016e-06 deg
node 319.0064030608053 3.175e-05 deg
peri 296.9892652238685 7.5348e-05 deg
M 218.5148690847622 7.4583e-05 deg
tp 2458068.073172081257
(2017-Nov-10.57317208)
0.0003545 JED
period 1698.597869575632
4.65
2.8504e-05
7.804e-08
d
yr
n .2119395099029179 3.5565e-09 deg/d
Q 3.01642645305797 3.3746e-08 au
  Orbit Determination Parameters
   # obs. used (total)      760  
   data-arc span      8366 days (22.90 yr)  
   first obs. used      1993-01-21  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50308  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 15:20:35  

Additional Information
 Earth MOID = 1.56442 au 
 Jupiter MOID = 2.18915 au 
 T_jup = 3.294 
[ 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 13.6 mag n/a MPO263792  

56957 Seohideaki           Discovered 2000 Sept. 24 by BATTeRS at the Bisei Spaceguard Center.
Hideaki Seo (b. 1932) was the governor of Sundai Gakuen high school. In 1966, he established a public astronomical lecture series where astronomers introduced current topics on astronomy and contributed to the promotion of astronomical education and information.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111210/MPCPages.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2000 SY20 = 2001 TN43 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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