HD 183144

HD 183144

A light curve for HD 183144, plotted from TESS data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 27m 33.90756s[2]
Declination +14° 16′ 56.9284″[2]
Apparent magnitude (V) 6.32[3]
Characteristics
Spectral type B4III[4]
U−B color index −0.512[5]
B−V color index −0.068±0.005[5]
Variable type suspected[6]
Astrometry
Radial velocity (Rv)+4.0±4.3[7][5] km/s
Proper motion (μ) RA: 6.162[2] mas/yr
Dec.: −4.550[2] mas/yr
Parallax (π)2.8745 ± 0.0280 mas[2]
Distance1,130 ± 10 ly
(348 ± 3 pc)
Absolute magnitude (MV)−0.66[5]
Details
Mass5.1[8] M☉
Radius5.8[9] R☉
Luminosity2,676[10] L☉
Surface gravity (log g)3.73[8] cgs
Temperature15,139[8] K
Metallicity [Fe/H]−0.003[8] dex
Rotational velocity (v sin i)200[11] km/s
Age160[12] Myr
Other designations
BD+13°4020, HD 183144, HIP 95664, HR 7396, SAO 104862[13]
Database references
SIMBADdata

HD 183144 is suspected variable star in the equatorial constellation of Aquila. It is a hot giant star about 1,130 light years away.

Results from the MASCARA experiment indicate that HD 183144 is a pulsating variable star with a period of 0.3649 days, during which it varies by 0.01 magnitude in white light.[14][15] It has a mass five times that of the Sun and, at an age of 160 million years, has already evolved away from the main sequence. It has expended to nearly six times the radius of the Sun and, with an effective temperature of 15,139 K, it has a bolometric luminosity of 2,676 L☉.

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