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15736 Hamanasu (1990 XN)
Classification: Main-belt Asteroid          SPK-ID: 2015736
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582928839299425 2.727e-08  
a 2.467391642415301 7.9263e-09 au
q 2.076821103552745 6.8019e-08 au
i 6.323798411835106 3.5131e-06 deg
node 86.32092113853969 3.6711e-05 deg
peri 18.7428541940688 4.0039e-05 deg
M 195.6332998134711 1.6812e-05 deg
tp 2459646.848725092458
(2022-Mar-08.34872509)
6.7522e-05 TDB
period 1415.648916533735
3.88
6.8215e-06
1.868e-08
d
yr
n .2543003394383067 1.2254e-09 deg/d
Q 2.857962181277856 9.181e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1970  
   data-arc span      25170 days (68.91 yr)  
   first obs. used      1951-09-08  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48463  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:01:38  

Additional Information
 Earth MOID = 1.09479 au 
 Jupiter MOID = 2.28353 au 
 T_jup = 3.460 
[ 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 13.8   n/a MPO473978  
diameter diameter 7.827 km 2.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.036   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15736 Hamanasu           Discovered 1990 Dec. 8 by K. Endate and K. Watanabe at Kitami.
Hamanasu, the name of a Japanese rose, is also the name of a sleeper train that connects Aomori and Sapporo (a 480-km distance) in 7.5 hours. Hamanasu is the only sleeper express train that passes through Seikan, the longest tunnel in the world. The train will be retired in the spring of 2016.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-11-25Last Updated: 2015-11-30

[ show close-approach data ]
Alternate Designations
 1990 XN = 1998 UK32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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