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20778 Wangchaohao (2000 RD11)
Classification: Main-belt Asteroid          SPK-ID: 2020778
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1495961379148144 2.8755e-08  
a 2.40119804982937 7.9697e-09 au
q 2.041988095206313 6.7758e-08 au
i 2.806277376010099 3.1508e-06 deg
node 89.2380231266001 6.8536e-05 deg
peri 5.737670169454775 6.9508e-05 deg
M 131.3036612766777 1.1655e-05 deg
tp 2458704.804775229686
(2019-Aug-09.30477523)
4.318e-05 TDB
period 1359.065536956276
3.72
6.7662e-06
1.852e-08
d
yr
n .2648878881928282 1.3188e-09 deg/d
Q 2.760408004452428 9.1619e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1654  
   data-arc span      11105 days (30.40 yr)  
   first obs. used      1989-12-30  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:31:28  

Additional Information
 Earth MOID = 1.05855 au 
 Jupiter MOID = 2.40201 au 
 T_jup = 3.509 
[ 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 15.07   n/a E2021B10  

20778 Wangchaohao           Discovered 2000 Sept. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Wang Chaohao (b. 1986) was awarded second place in the 2004 Intel International Science and Engineering Fair for his earth and space sciences team project. He attends the Shanghai High School, Shanghai, China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 2000 RD11 = 1989 YY3 = 1998 HP74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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