V1401 Aquilae: Difference between revisions
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variable=[[Semiregular variable|SRd]]<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}</ref>}} |
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variable=[[type II Cepheid]]}} |
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radial_v=-12.1 ± 2 | |
radial_v=-12.1 ± 2 | |
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Revision as of 18:56, 20 April 2016
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 05m 05.41390s |
| Declination | −11° 35′ 57.8808″ |
| Apparent magnitude (V) | 6.39 |
| Characteristics | |
| Spectral type | F1III |
| B−V color index | 0.52 |
| Variable type | SRd[1] |
| Astrometry | |
| Radial velocity (Rv) | -12.1 ± 2 km/s |
| Proper motion (μ) | RA: -2.19 ± 0.44 mas/yr Dec.: -14.18 ± 0.43 mas/yr |
| Parallax (π) | 2.56 ± 0.97 mas |
| Distance | approx. 1,300 ly (approx. 400 pc) |
| Absolute magnitude (MV) | 6.88 |
| Details | |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
V1401 Aquilae is semi-regular pulsating star in the constellation Aquila. Its evolutionary status is unclear, and it has been classified as a post-AGB object, a UU Herculis variable or belonging to the W Virginis variable subclass of the type II Cepheids. It has a low metallicity.[2] V1401 Aquilae was a latter designation of 64 Sagittarii.[3]
References
- ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- ^ Reyniers, M.; Cuypers, J. (2005). "The evolutionary status of the bright high-latitude supergiant HD 190390". Astronomy and Astrophysics. 432 (2): 595–608. Bibcode:2005A&A...432..595R. doi:10.1051/0004-6361:20042097.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 209, 221. Bibcode:1987JHA....18..209W.
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