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13918 Tsukinada (1984 QB)
Classification: Main-belt Asteroid          SPK-ID: 2013918
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2152782544676947 2.1532e-08  
a 2.620201174131126 8.962e-09 au
q 2.056128839009973 5.7018e-08 au
i 10.16147621068873 1.1734e-06 deg
node 310.3003130893881 4.7502e-06 deg
peri 354.797333479387 6.3867e-06 deg
M 272.1081960015439 7.5511e-06 deg
tp 2459774.721541235995
(2022-Jul-14.22154124)
3.3545e-05 TDB
period 1549.174651681399
4.24
7.9481e-06
2.176e-08
d
yr
n .2323818038264914 1.1922e-09 deg/d
Q 3.184273509252279 1.0891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2925  
   data-arc span      25873 days (70.84 yr)  
   first obs. used      1950-08-14  
   last obs. used      2021-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43926  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:23:14  

Additional Information
 Earth MOID = 1.04081 au 
 Jupiter MOID = 2.08211 au 
 T_jup = 3.350 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.91   n/a MPCxxxxx  
diameter diameter 7.009 km 0.402 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.299   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

13918 Tsukinada           Discovered 1984 Aug. 24 by T. Seki at Geisei.
The sea off the town of Otsuki, Kochi prefecture, is well known for coral products. Underwater corals make the sea of Tsukinada appear pinkish. Its beauty attracts tourists and is also sung of in a folksong.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

Alternate Designations
 1984 QB = 1950 PO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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