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21742 Rachaelscott (1999 RU163)
Classification: Main-belt Asteroid          SPK-ID: 2021742
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 .1629133960077704 4.7922e-08  
a 2.76933659246656 1.7295e-08 au
q 2.318174563499246 1.2891e-07 au
i 4.292651553515831 4.8368e-06 deg
node 323.1759117163062 5.75e-05 deg
peri 9.868373575275866 6.0168e-05 deg
M 230.9773785729112 2.3029e-05 deg
tp 2459803.788996118083
(2022-Aug-12.28899612)
0.00011118 TDB
period 1683.302014796229
4.61
1.5769e-05
4.317e-08
d
yr
n .2138653651190333 2.0034e-09 deg/d
Q 3.220498621433875 2.0113e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      10835 days (29.66 yr)  
   first obs. used      1990-10-12  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58999  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:55:13  

Additional Information
 Earth MOID = 1.30605 au 
 Jupiter MOID = 2.14058 au 
 T_jup = 3.314 
[ 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 14.93   n/a E2021B10  

21742 Rachaelscott           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Rachael Ann Scott (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for her environmental sciences project. She is a member of the Northwest Mississippi Home Educators Association, Como, Mississippi, 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

[ show close-approach data ]
Alternate Designations
 1999 RU163 = 1998 HP93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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