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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1587323802415331 1.4623e-08  
a 2.465632720075291 7.5093e-09 au
q 2.074256969616334 3.6332e-08 au
i 6.32132757405018 4.4009e-07 deg
node 86.29618704794886 6.8826e-06 deg
peri 19.03326717158613 8.3695e-06 deg
M 246.2083767572296 6.7434e-06 deg
tp 2459647.491017485962
(2022-Mar-08.99101749)
2.7759e-05 TDB
period 1414.135432022408
3.87
6.4603e-06
1.769e-08
d
yr
n .2545725054672808 1.163e-09 deg/d
Q 2.857008470534247 8.7013e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2140  
   data-arc span      25298 days (69.26 yr)  
   first obs. used      1951-09-08  
   last obs. used      2020-12-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47997  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:07:34  

Additional Information
 Earth MOID = 1.09209 au 
 Jupiter MOID = 2.28344 au 
 T_jup = 3.461 
[ 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 13.77   n/a E2021B10  
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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