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9162 Kwiila (1987 OA)
Classification: Apollo [NEO]          SPK-ID: 2009162
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 131 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5953172342907521 2.7078e-08  
a 1.496614275623293 1.2009e-09 au
q .6056540042591766 4.0355e-08 au
i 9.007733090309983 3.8556e-06 deg
node 180.0490243098374 2.2681e-05 deg
peri 235.7769167405236 2.2205e-05 deg
M 295.9376989056129 4.1437e-06 deg
tp 2459119.504473046733
(2020-Sep-27.00447305)
7.7343e-06 TDB
period 668.7491639381242
1.83
8.0489e-07
2.204e-09
d
yr
n .5383184300075011 6.4791e-10 deg/d
Q 2.387574546987409 1.9158e-09 au
  Orbit Determination Parameters
   # obs. used (total)      664  
   data-arc span      12073 days (33.05 yr)  
   first obs. used      1987-07-18  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4796  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-06 05:54:34  

Additional Information
 Earth MOID = .0809232 au 
 Jupiter MOID = 3.02281 au 
 T_jup = 4.328 
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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 17.8   n/a MPO452299  
diameter diameter 1.127 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.088   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

9162 Kwiila           Discovered 1987 July 29 by J. E. Mueller at Palomar.
Kwiila is one of the First People in the Luiseno creation story. Kwiila means "black oak", which is indigenous to Palomar Mountain, where the Luiseno traditionally gathered acorns during the summer months.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

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