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21853 Kelseykay (1999 TU146)
Classification: Main-belt Asteroid          SPK-ID: 2021853
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06991329812605439 3.0085e-08  
a 2.987984853835701 1.5026e-08 au
q 2.779084977953351 9.2932e-08 au
i 4.384716090117692 3.3411e-06 deg
node 147.2812407303088 4.2991e-05 deg
peri 262.4917765804431 4.996e-05 deg
M 5.931159182554405 2.4379e-05 deg
tp 2459169.418419571251
(2020-Nov-15.91841957)
0.00012781 TDB
period 1886.539984841633
5.17
1.4231e-05
3.896e-08
d
yr
n .1908255339895277 1.4395e-09 deg/d
Q 3.196884729718052 1.6077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1373  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1992-04-29  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:54:44  

Additional Information
 Earth MOID = 1.79266 au 
 Jupiter MOID = 2.07386 au 
 T_jup = 3.249 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.34   n/a E2021B10  

21853 Kelseykay           Discovered 1999 Oct. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kelsey Kay Burnham (b. 1993) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany & zoology project. She attends the Yearling Middle School, Okeechobee, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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