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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08247075187741353 6.2142e-08  
a 2.787199338842556 2.6641e-08 au
q 2.55733691373598 1.7454e-07 au
i 11.94622274511183 7.5345e-06 deg
node 319.0075263125319 2.8077e-05 deg
peri 296.7345665110141 7.1096e-05 deg
M 261.1480965853252 7.3292e-05 deg
tp 2458067.194849222875
(2017-Nov-09.69484922)
0.0003487 JED
period 1699.614675252611
4.65
2.4368e-05
6.672e-08
d
yr
n .2118127156948053 3.0369e-09 deg/d
Q 3.017061763949132 2.8838e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      8477 days (23.21 yr)  
   first obs. used      1993-01-21  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50085  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 14:45:41  

Additional Information
 Earth MOID = 1.56735 au 
 Jupiter MOID = 2.18897 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 13.7 mag n/a MPO365911  

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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