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181829 Houyunde (1998 SY62)
Classification: Main-belt Asteroid          SPK-ID: 2181829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212723788008776 5.6968e-08  
a 2.419324638738161 1.3196e-08 au
q 2.12592738470681 1.3823e-07 au
i 6.384269800845922 7.0563e-06 deg
node 194.1936427486927 3.6371e-05 deg
peri 216.9367766886242 4.3364e-05 deg
M 295.1871457552857 2.3478e-05 deg
tp 2459447.956175273463
(2021-Aug-21.45617527)
9.0341e-05 TDB
period 1374.483875715316
3.76
1.1246e-05
3.079e-08
d
yr
n .2619164956101409 2.1429e-09 deg/d
Q 2.712721892769511 1.4796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   data-arc span      8916 days (24.41 yr)  
   first obs. used      1996-02-17  
   last obs. used      2020-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66767  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:14  

Additional Information
 Earth MOID = 1.13888 au 
 Jupiter MOID = 2.64407 au 
 T_jup = 3.496 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.62   n/a E2021B55  

181829 Houyunde           Discovered 1998 Sept. 25 by Beijing Schmidt CCD Asteroid Program at Xinglong.
Hou Yunde (b. 1929) laid the foundation for modern infectious disease prevention and control technology systems in China. He is an Academician of the Chinese Academy of Engineering. The medical drugs he developed have cured millions of patients. He won the 2017 State Preeminent Science and Technology Award of China.
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 2019-08-27Last Updated: 2019-09-23

[ show close-approach data ]
Alternate Designations
 1998 SY62 = 2002 VC78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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