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72021 Yisunji (2000 XJ15)
Classification: Main-belt Asteroid          SPK-ID: 2072021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1313888338723294 4.0509e-08  
a 2.363892108573482 1.0409e-08 au
q 2.05330308102801 9.5556e-08 au
i 7.090739248451458 3.7269e-06 deg
node 83.0628446333446 4.276e-05 deg
peri 341.8366142813064 4.6861e-05 deg
M 193.2118698245538 1.8953e-05 deg
tp 2459815.538839635840
(2022-Aug-24.03883964)
7.0903e-05 TDB
period 1327.516424795906
3.63
8.7685e-06
2.401e-08
d
yr
n .2711830854035171 1.7912e-09 deg/d
Q 2.674481136118953 1.1777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      10639 days (29.13 yr)  
   first obs. used      1991-04-10  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56364  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:59:49  

Additional Information
 Earth MOID = 1.06782 au 
 Jupiter MOID = 2.60339 au 
 T_jup = 3.527 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.95   n/a E2021B10  

72021 Yisunji           Discovered 2000 Dec. 4 by Y.-B. Jeon and B.-C. Lee at Bohyunsan Optical Astronomy Observatory.
Yi Sunji (1406-1465) was an astronomer during the Chosun Dynasty who took Chosun's calendrical astronomy to the global level. His publication of two astronomy books, Chiljeongsan-naepyeon and Chiljeongsan-oepyeon enabled Chosun to carry out astronomical activities its own way.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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