Alpha Sculptoris

α Sculptoris

Template:Location mark Location of α Sculptoris (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Sculptor
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	+4.30
Characteristics
Spectral type	B7 IIIp
U−B Template:Engvar	−0.515
B−V Template:Engvar	−0.155
Variable type	SX Ari
Astrometry
Radial velocity (Rv)	+10.2 km/s
Proper motion (μ)	RA: +20.13 mas/yr Dec.: +5.31 mas/yr
Parallax (π)	4.20±0.18 mas
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	−2.58
Details
Mass	5.01 Template:Solar mass
Radius	7.52 Template:Solar radius
Luminosity	1,549 Template:Solar luminosity
Surface gravity (log g)	3.20 cgs
Temperature	13,600 K
Metallicity [Fe/H]	0.90 dex
Rotational velocity (v sin i)	17 km/s
Age	93 Myr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD	data

Alpha Sculptoris, Latinized from α Sculptoris, is the Bayer designation for a blue-white star in the southern constellation of Sculptor. It has an apparent visual magnitude of +4.30, which makes it the brightest star in this generally faint constellation. Parallax measurements collected during the Hipparcos mission provide a distance estimate for this star, placing it at roughly Template:Convert, with a 4% margin of error.

File:AlphaSclLightCurve.png

Light curves in four photometric bands for Alpha Sculptoris, adapted from Manfroid and Renson (1994)

Alpha Sculptoris is a B-type giant star. It is classified as an SX Arietis type variable star and its magnitude varies by less than a tenth of a magnitude.

The luminosity of α Scl is around 1,500 times that of the Sun while its surface temperature is 13,600 K. The radius of Alpha Sculptoris is calculated to be seven times solar while its mass is five times that of the Sun.