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17950 Grover (1999 JS18)
Classification: Main-belt Asteroid          SPK-ID: 2017950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680211164520158 4.1449e-08  
a 2.333423774985866 9.7264e-09 au
q 1.941359307157063 9.8909e-08 au
i 6.711268208985543 4.4732e-06 deg
node 357.3620797978483 2.5491e-05 deg
peri 328.3234586737183 2.7564e-05 deg
M 237.0917617206606 1.1647e-05 deg
tp 2459444.995478505429
(2021-Aug-18.49547851)
4.3241e-05 TDB
period 1301.933658004869
3.56
8.1403e-06
2.229e-08
d
yr
n .2765117852100676 1.7289e-09 deg/d
Q 2.725488242814668 1.1361e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1485  
   data-arc span      11188 days (30.63 yr)  
   first obs. used      1989-09-09  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:43:09  

Additional Information
 Earth MOID = .933732 au 
 Jupiter MOID = 2.61781 au 
 T_jup = 3.541 
[ 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 14.7   n/a MPO309295  

17950 Grover           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Vaishali Kiran Grover (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her environmental science project. She attends the Miami Coral Park Senior High School, Miami, Florida, 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: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1999 JS18 = 1989 RH5 = 1989 SN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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