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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08268645422639635 7.3865e-08  
a 2.786053464966767 4.2121e-08 AU
q 2.5556845826635 2.1443e-07 AU
i 11.94904329516265 9.8201e-06 deg
node 319.0062129562369 3.3184e-05 deg
peri 297.1789419482662 8.0619e-05 deg
M 133.5162388233283 7.6513e-05 deg
tp 2456370.538243360964
(2013-Mar-19.03824336)
0.0003612 JED
period 1698.566664165408
4.65
3.852e-05
1.055e-07
d
yr
n .211943403573675 4.8064e-09 deg/d
Q 3.016422347270034 4.5604e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7898 days (21.62 yr)  
   first obs. used      1993-01-21  
   last obs. used      2014-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51011  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:59:07  

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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