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4566 Chaokuangpiu (1981 WM4)
Classification: Main-belt Asteroid          SPK-ID: 2004566
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2116708980319552 1.2416e-08  
a 2.836724015034931 9.5595e-09 au
q 2.236272095303673 3.4602e-08 au
i 10.80223870596195 5.8429e-07 deg
node 252.4227395917953 3.4679e-06 deg
peri 121.7304679094557 6.4484e-06 deg
M 87.4539676287707 4.4655e-06 deg
tp 2458776.563244701699
(2019-Oct-20.06324470)
2.0597e-05 TDB
period 1745.115013594651
4.78
8.8213e-06
2.415e-08
d
yr
n .2062901282698032 1.0428e-09 deg/d
Q 3.437175934766188 1.1583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2839  
   data-arc span      14356 days (39.30 yr)  
   first obs. used      1981-11-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:30:40  

Additional Information
 Earth MOID = 1.25897 au 
 Jupiter MOID = 2.14316 au 
 T_jup = 3.252 
[ 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 12.33   n/a E2021B10  
diameter diameter 10.511 km 1.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.262   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

4566 Chaokuangpiu           Discovered 1981 Nov. 27 at the Purple Mountain Observatory.
Named in honor of Kuang-Piu Chao, consulting professor at Tsinghua University and Zhejiang University. For many years, he made remarkable contributions to the development of Chinese educational and cultural programs.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1981 WM4 = 1986 XC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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