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19148 Alaska (1989 YA5)
Classification: Main-belt Asteroid          SPK-ID: 2019148
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472956410581765 4.4783e-08  
a 3.121028409840781 1.9767e-08 au
q 2.661314529452502 1.3821e-07 au
i 19.61565649981393 5.6391e-06 deg
node 299.9250784950081 1.1015e-05 deg
peri 239.5053469541725 1.9805e-05 deg
M 147.7193281251866 1.8234e-05 deg
tp 2458374.119933741354
(2018-Sep-12.61993374)
9.9476e-05 TDB
period 2013.932960763232
5.51
1.9133e-05
5.238e-08
d
yr
n .1787547088278294 1.6982e-09 deg/d
Q 3.58074229022906 2.2678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1714  
   data-arc span      16653 days (45.59 yr)  
   first obs. used      1975-06-08  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:41:40  

Additional Information
 Earth MOID = 1.7246 au 
 Jupiter MOID = 1.69129 au 
 T_jup = 3.110 
[ 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 12.70   n/a E2021B10  
diameter diameter 10.976 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.122   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19148 Alaska           Discovered 1989 Dec. 28 by E. W. Elst at Haute Provence.
While searching for de la Croyère's mythical land, the Second Kamchatka expedition reached Alaska in July 1741. Georg Wilhelm Steller, the expedition's naturalist, spotted the blue jay Cyanocitta stelleri, a bird he recognized as not native to Asia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1989 YA5 = 1991 HX = 1996 BZ10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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