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21417 Kelleyharris (1998 FF71)
Classification: Main-belt Asteroid          SPK-ID: 2021417
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09225776693076317 3.2697e-08  
a 2.240487749088861 7.2576e-09 au
q 2.033785352522191 7.3074e-08 au
i 2.382590385750639 3.6657e-06 deg
node 301.3437283382212 9.4085e-05 deg
peri 295.1580175945788 9.6799e-05 deg
M 245.567564650261 2.457e-05 deg
tp 2459589.866808232832
(2022-Jan-10.36680823)
8.4135e-05 TDB
period 1224.932865716025
3.35
5.9518e-06
1.63e-08
d
yr
n .293893657420617 1.428e-09 deg/d
Q 2.447190145655531 7.9271e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1069  
   data-arc span      8753 days (23.96 yr)  
   first obs. used      1997-02-03  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:29  

Additional Information
 Earth MOID = 1.02183 au 
 Jupiter MOID = 2.54908 au 
 T_jup = 3.628 
[ 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 15.7   n/a MPO247545  

21417 Kelleyharris           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kelley Harris (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for her biochemistry project. She attends the C. K. McClatchy High School, Sacramento, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1998 FF71 = 1999 TE146 = 1999 US63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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