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21817 Yingling (1999 TG32)
Classification: Main-belt Asteroid          SPK-ID: 2021817
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 .1795447786937465 4.3596e-08  
a 2.656822474426928 1.1293e-08 au
q 2.179803871227374 1.1559e-07 au
i 4.218514970698224 4.0882e-06 deg
node 206.0232401734207 5.4707e-05 deg
peri 300.0509648639616 5.5361e-05 deg
M 214.6183466879297 1.125e-05 deg
tp 2459839.277093662938
(2022-Sep-16.77709366)
5.2055e-05 TDB
period 1581.765982706467
4.33
1.0085e-05
2.761e-08
d
yr
n .2275937173614172 1.4511e-09 deg/d
Q 3.133841077626483 1.3321e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      13862 days (37.95 yr)  
   first obs. used      1982-12-14  
   last obs. used      2020-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:32  

Additional Information
 Earth MOID = 1.1951 au 
 Jupiter MOID = 1.8977 au 
 T_jup = 3.361 
[ 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 14.37   n/a E2021B10  
diameter diameter 8.036 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21817 Yingling           Discovered 1999 Oct. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Chelsey Ann Yingling (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for her environmental sciences project. She attends the Tucson Magnet High School, Tucson, Arizona, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

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Alternate Designations
 1999 TG32 = 1982 XE3 = 1997 HY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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