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词条 2 Ursae Minoris
释义

  1. References

  2. External links

{{Starbox begin
| name=2 Ursae Minoris
}}{{Starbox observe
| epoch=J2000
| ra={{RA|01|08|44.88}}
| dec={{DEC|86|15|25.5}}
| appmag_v=4.24
| constell=Cepheus
}}{{Starbox character
| class = K2 II-III
| variable=
}}{{Starbox astrometry
| radial_v=
| prop_mo_ra={{nowrap|80.65 ± 0.16}}
| prop_mo_dec={{nowrap|-11.54 ± 0.17}}
| parallax=11.64
| p_error=0.15
| parallax_footnote =
| absmag_v=
}}{{Starbox detail
| mass = 2.27 ± 0.41[6]
| luminosity = 183 ± 20[6]
| temperature = 4,549[6]
}}{{Starbox catalog
| names=BD+85° 19, HD 5848, HIP 5372, HR 285, SAO 181[9]
}}{{Starbox reference
| Simbad = HR+285
}}{{Starbox end}}

2 Ursae Minoris (2 UMi) is a 4.24m orange giant star (spectral class K2II-III) near the northern celestial pole (RA: {{RA|01|08|44.88}}, Dec: {{DEC|+86|15|25.5}}). Despite its Flamsteed designation, the star is actually located in the constellation Cepheus. This occurred when the constellation boundaries were changed in 1930 by Eugene Delporte. Therefore, the star is usually referred only by its catalog numbers such as HR 285 or HD 5848.

References

1. ^{{citation | display-authors=1 | last1=Stello | first1=D. | last2=Bruntt | first2=H. | last3=Preston | first3=H. | last4=Buzasi | first4=D. | title=Oscillating K Giants with the WIRE Satellite: Determination of Their Asteroseismic Masses | journal=The Astrophysical Journal Letters | volume=674 | issue=1 | year=2008 | pages=L53–L56 | doi=10.1086/528936 | bibcode=2008ApJ...674L..53S | postscript=. |arxiv = 0801.2155 }}
2. ^{{cite simbad | title=HR 285 | accessdate=2007-01-04 }}
[1][2]
}}

External links

  • [https://web.archive.org/web/20061206131001/http://www.astro.uiuc.edu/~kaler/sow/2umi.html Stars — 2 Ursae Minoris]
{{Stars of Cepheus}}{{giant-star-stub}}

8 : Cepheus (constellation)|K-type bright giants|K-type giants|Flamsteed objects|Durchmusterung objects|Henry Draper Catalogue objects|HR objects|Hipparcos objects

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