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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08262633486110058 7.4885e-08  
a 2.786544617551943 4.3046e-08 AU
q 2.556302648876698 2.1864e-07 AU
i 11.94891360099777 9.9033e-06 deg
node 319.0056617235691 3.3217e-05 deg
peri 297.2973077373315 8.092e-05 deg
M 91.01228994198198 7.6633e-05 deg
tp 2456370.968548375229
(2013-Mar-19.46854838)
0.00036194 JED
period 1699.015843722767
4.65
3.937e-05
1.078e-07
d
yr
n .2118873707564684 4.9098e-09 deg/d
Q 3.016786586227187 4.6603e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1993-01-21  
   last obs. used      2014-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51114  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:45:48  

Additional Information
 Earth MOID = 1.56582 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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