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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08268645043506739 6.6278e-08  
a 2.786053467203208 3.543e-08 AU
q 2.555684595277862 1.8301e-07 AU
i 11.94904574566978 8.7642e-06 deg
node 319.0062115264167 3.2941e-05 deg
peri 297.1789427334668 7.8665e-05 deg
M 133.5162384473307 7.6064e-05 deg
tp 2456370.538244376481
(2013-Mar-19.03824438)
0.00035818 JED
period 1698.566666210637
4.65
3.2401e-05
8.871e-08
d
yr
n .2119434033184759 4.0429e-09 deg/d
Q 3.016422339128553 3.8359e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      7951 days (21.77 yr)  
   first obs. used      1993-01-21  
   last obs. used      2014-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50527  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 14:44:34  

Additional Information
 Earth MOID = 1.56703 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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