V1401 Aquilae

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.[3] V1401 Aquilae was a latter designation of 64 Sagittarii.[4]

V1401 Aquilae
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 20h 05m 05.41390s
Declination −11° 35′ 57.8808″
Apparent magnitude (V) 6.18 - 6.55[1]
Characteristics
Spectral type F1III
B−V color index 0.52
Variable type SRd[1]
Astrometry
Radial velocity (Rv)−11.36[2] km/s
Proper motion (μ) RA: −2.585[2] mas/yr
Dec.: −15.629[2] mas/yr
Parallax (π)1.3722 ± 0.0441 mas
Distance2,380 ± 80 ly
(730 ± 20 pc)
Details
Radius35[2] R☉
Luminosity1,309[2] L☉
Temperature5,869[2] K
Other designations
BD-12°5641, HD 190390, HIP 98910, HR 7671, SAO 163245
Database references
SIMBADdata

References
  1. 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.
  3. Reyniers, M.; Cuypers, J. (2005). "The evolutionary status of the bright high-latitude supergiant HD 190390". Astronomy and Astrophysics. 432 (2): 595–608. arXiv:astro-ph/0411493. Bibcode:2005A&A...432..595R. doi:10.1051/0004-6361:20042097. S2CID 1645692.
  4. Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 209–223. Bibcode:1987JHA....18..209W. doi:10.1177/002182868701800305. S2CID 118445625.


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