“8 Aquarii”的意思、由来-开放百科全书

词条

8 Aquarii

释义

References
External links

{{Refimprove|date=April 2017}}{{Starbox begin |{{Starbox observe |

  epoch=J2000 |  constell=Aquarius |  ra={{RA|20|59|54.82678}}^[1] |  dec={{DEC|-13|03|05.8699}}^[1] |  appmag_v=6.60^[2] }}

{{Starbox character
| class=A3/4 IV^[3]
| b-v=
| u-b=
| variable=
}}{{Starbox astrometry
| radial_v=
| prop_mo_ra=-27.46^[1]
| prop_mo_dec=1.89^[1]
| parallax=11.40
| p_error=0.85
| parallax_footnote=^[1]
| absmag_v=}}

{{Starbox catalog
|names=HIP 103640, HD 199828, SAO 164046, {{nowrap|BD−13° 5813}} }}{{Starbox reference
| Simbad = 8+Aqr
}}{{Starbox end}}

8 Aquarii (abbreviated 8 Aqr) is a blue-white sub-giant of the spectral class A4IV in the constellation Aquarius. 8 Aquarii is the Flamsteed designation. It has an absolute magnitude of 6.775.{{cn|date=April 2017}} It is approximately 290 light-years away from Earth, based on parallax.^[1] It is approximately 1.7 solar masses and about 3 times hotter than the Sun and thus allows lines of ionized metals with an abundance of metals.{{cn|date=April 2017}}

References

1. ^¹²³⁴⁵{{cite journal|title=Validation of the new Hipparcos reduction|url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357}}
2. ^{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}
3. ^{{cite journal|bibcode=1999MSS...C05....0H|title=Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5|journal=Michigan Spectral Survey|volume=5|author1=Houk, N.|author2=Swift, C.|year=1999}}

External links

{{cite simbad | title= 8 Aqr }}

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