Mu Sculptoris

Mu Sculptoris

Location of μ Sculptoris (circled)
Observation data Equinox J2000.0]] (ICRS)
Constellation	Sculptor
Right ascension	23h 40m 38.14898s[1]
Declination	−32° 04′ 23.2478″[1]
Apparent magnitude (V)	5.30[2] (5.30 – 5.33)[3]
Characteristics
Evolutionary stage	giant
Spectral type	K1 III[4]
U−B color index	+0.69[5]
B−V color index	+0.97[6]
Variable type	suspected[3]
Astrometry
Radial velocity (Rv)	+15.79±0.12[1] km/s
Proper motion (μ)	RA: −91.30[7] mas/yr Dec.: −53.29[7] mas/yr
Parallax (π)	11.6622 ± 0.1228[1] mas
Distance	280 ± 3 ly (85.7 ± 0.9 pc)
Absolute magnitude (MV)	0.54[2]
Details
Mass	1.32[8] M☉
Radius	10.88+0.16 −0.13[1] R☉
Luminosity	61.4±0.8[1] L☉
Surface gravity (log g)	2.50[8] cgs
Temperature	4,899+29 −35[1] K
Metallicity [Fe/H]	−0.21[2] dex
Rotational velocity (v sin i)	2.6[9] km/s
Other designations
μ Scl, NSV 14661, CD−32°17621, FK5 1618, GC 32888, HD 222433, HIP 116820, HR 8975, SAO 214701, GSC 07515-01148[10]
Database references
SIMBAD	data

μ Sculptoris, Latinized as Mu Sculptoris, is a solitary,^[11] orange-hued star in the southern constellation of Sculptor. It is visible to the naked eye as a dim point of light with an apparent visual magnitude of +5.30.^[2] This star is located approximately 291 light years from the Sun based on parallax,^[7] and it is drifting further away with a radial velocity of +16 km/s.^[1]

This object is an aging K-type giant star with a stellar classification of K1 III.^[4] Having exhausted the supply of hydrogen at its core, this star expanded and cooled off the main sequence. At present it has 11^[1] times the girth of the Sun. It is a suspected variable star of unknown type, with its brightness measured as varying from magnitude 5.30 down to 5.33.^[3] The star has 1.32^[8] times the mass of the Sun and is radiating 61^[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 4899 K.^[1]

References

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