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120730 Zhouyouyuan (1997 SN33)
Classification: Main-belt Asteroid          SPK-ID: 2120730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2355015956219834 5.5693e-08  
a 2.335502931091201 1.2262e-08 au
q 1.785488264239404 1.286e-07 au
i 1.440714949479187 4.7246e-06 deg
node 230.2105211901277 0.00016665 deg
peri 144.0484276374436 0.00016685 deg
M 110.0602156071778 8.5499e-06 deg
tp 2458601.937063133373
(2019-Apr-28.43706313)
2.9532e-05 TDB
period 1303.674143108151
3.57
1.0267e-05
2.811e-08
d
yr
n .2761426249827331 2.1747e-09 deg/d
Q 2.885517597942999 1.5149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      8164 days (22.35 yr)  
   first obs. used      1997-09-26  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5744  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:22:21  

Additional Information
 Earth MOID = .786607 au 
 Jupiter MOID = 2.58158 au 
 T_jup = 3.530 
[ 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 17.0   n/a MPO359580  

120730 Zhouyouyuan           Discovered 1997 Sept. 26 by Beijing Schmidt CCD Asteroid Program at Xinglong.
Zhou Youyuan (b. 1938) is a leading astrophysicist and an Academician of the Chinese Academy of Sciences. He has made significant contributions to the study of quasars, active galactic nuclei, cosmology, large scale structures of the universe, and high-energy astrophysics.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-09-25Last Updated: 2018-10-01

Alternate Designations
 1997 SN33 = 2001 YC100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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