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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06948785447199765 3.1038e-08  
a 2.988750249264762 1.8039e-08 au
q 2.781068406890705 9.8018e-08 au
i 4.383698928659287 4.373e-06 deg
node 147.2880484980514 4.3334e-05 deg
peri 262.0301516469436 5.39e-05 deg
M 251.8422326115976 3.3047e-05 deg
tp 2459167.506552846769
(2020-Nov-14.00655285)
0.0001743 TDB
period 1887.264908971528
5.17
1.7087e-05
4.678e-08
d
yr
n .1907522353055265 1.727e-09 deg/d
Q 3.196432091638818 1.9293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1083  
   data-arc span      10048 days (27.51 yr)  
   first obs. used      1992-04-29  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51924  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 00:17:27  

Additional Information
 Earth MOID = 1.7949 au 
 Jupiter MOID = 2.07643 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 14.3   n/a MPO347690  

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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