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16982 Tsinghua (1999 AS9)
Classification: Main-belt Asteroid          SPK-ID: 2016982
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1018171913006276 4.4475e-08  
a 2.184167344190021 7.5489e-09 au
q 1.961781559874042 9.4523e-08 au
i 5.974538110034953 4.5959e-06 deg
node 92.20190014388859 3.3572e-05 deg
peri 180.108881125429 3.8635e-05 deg
M 164.1120063958317 2.1566e-05 deg
tp 2458663.016488772489
(2019-Jun-28.51648877)
6.9254e-05 TDB
period 1179.036612197672
3.23
6.1124e-06
1.673e-08
d
yr
n .3053340297287088 1.5829e-09 deg/d
Q 2.406553128506 8.3175e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      15405 days (42.18 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:50:19  

Additional Information
 Earth MOID = .943686 au 
 Jupiter MOID = 2.66405 au 
 T_jup = 3.664 
[ 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 15.2   n/a MPO435857  
diameter diameter 3.163 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16982 Tsinghua           Discovered 1999 Jan. 10 by the Beijing Schmidt CCD Asteroid Program at Xinglong.
Founded in 1911, Tsinghua University is one of the most renowned research universities in China and has made significant contributions to the development of science, technology, culture and the economy 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: 20101128/MPCPages.arcLast Updated: 2010-12-06

[ show close-approach data ]
Alternate Designations
 1999 AS9 = 1978 WP13 = 1993 KP1 = 1996 JG15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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