V1401 Aquilae

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V1401 Aquilae
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 20h 05m 05.41390s
Declination −11° 35′ 57.8808″
Apparent magnitude (V) 6.39
Characteristics
Spectral type F1III
B−V color index 0.52
Variable type type II Cepheid
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
BD-12° 5641, HD 190390, NSV 12766, HIP 98910, HR 7671, SAO 163245.
Database references
SIMBAD data
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.[1] V1401 Aquilae was a latter designation of 64 Sagitarii.[2]

References

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