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18469 Hakodate (1995 UC9)
Classification: Main-belt Asteroid          SPK-ID: 2018469
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 .05510971680676969 3.2571e-08  
a 2.931808717022891 1.3647e-08 au
q 2.770237568896141 9.7511e-08 au
i 2.398359001400612 4.015e-06 deg
node 40.48835475299116 8.1913e-05 deg
peri 88.50432651256284 9.0433e-05 deg
M 264.6348611868594 3.9728e-05 deg
tp 2459686.223391811345
(2022-Apr-16.72339181)
0.00020363 TDB
period 1833.588491856628
5.02
1.2802e-05
3.505e-08
d
yr
n .1963363107910197 1.3709e-09 deg/d
Q 3.093379865149642 1.4399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1481  
   data-arc span      10094 days (27.64 yr)  
   first obs. used      1993-05-25  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5504  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:29:45  

Additional Information
 Earth MOID = 1.78631 au 
 Jupiter MOID = 1.92126 au 
 T_jup = 3.272 
[ 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 14.42   n/a E2021B10  
diameter diameter 4.017 km 1.599 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.229   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18469 Hakodate           Discovered 1995 Oct. 20 by N. Sato and T. Urata at Chichibu.
Hakodate, located at the southern-most part of Hokkaido, is a prosperous city of fishing and tourism. The night view from Mount Hakodate is one of the best tourist attractions in Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24

[ show close-approach data ]
Alternate Designations
 1995 UC9 = 1998 HM49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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