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19002 Tongkexue (2000 RD61)
Classification: Main-belt Asteroid          SPK-ID: 2019002
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265258656232993 3.7011e-08  
a 2.393710954643173 9.0242e-09 au
q 2.090844604054972 8.8553e-08 au
i 7.395095395897898 3.6476e-06 deg
node 72.38809689108025 3.2171e-05 deg
peri 279.8058496086424 3.5273e-05 deg
M 213.9096174033487 1.4548e-05 deg
tp 2459749.440297733570
(2022-Jun-18.94029773)
5.5031e-05 TDB
period 1352.71400944784
3.70
7.6495e-06
2.094e-08
d
yr
n .2661316416372056 1.505e-09 deg/d
Q 2.696577305231375 1.0166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2116  
   data-arc span      10927 days (29.92 yr)  
   first obs. used      1991-04-15  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44814  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:43:58  

Additional Information
 Earth MOID = 1.09934 au 
 Jupiter MOID = 2.7306 au 
 T_jup = 3.508 
[ 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 14.47   n/a E2021B10  
diameter diameter 2.937 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.25396 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.428   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19002 Tongkexue           Discovered 2000 Sept. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Tong Ke Xue (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his computer science project. He attends the Hamilton High School, Chandler, 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: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2000 RD61 = 1998 DZ14 = 1999 NL12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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