Kappa1 Sculptoris

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Kappa1 Sculptoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sculptor
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) +5.51 (6.23 + 6.29)[2]
Characteristics
Spectral type F2V[3] (F4 III + F3 III)[2]
U−B Template:Engvar +0.06[4]
B−V Template:Engvar +0.42[4]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[5] km/s
Proper motion (μ) RA: +70.11[1] mas/yr
Dec.: −8.97[1] mas/yr
Parallax (π)12.91±0.72 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)2.05[6]
Orbit[7]
Period (P)616.04 yr
Semi-major axis (a)1.500″
Eccentricity (e)0.103
Inclination (i)98.98°
Longitude of the node (Ω)81.75°
Periastron epoch (T)2095.68
Argument of periastron (ω)
(secondary)		256.86°
Details
κ1 Scl A
Mass1.8[8] Template:Solar mass
Temperature6,565[9] K
Rotational velocity (v sin i)Script error: No such module "val".[6] km/s
B
Mass1.8[10] Template:Solar mass
Radius2.3[10] Template:Solar radius
Luminosity12.2[10] Template:Solar luminosity
Temperature7,111[10] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[11]
Database references
SIMBADdata
A
B

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Kappa1 Sculptoris is a binary star[2] system in the southern constellation of Sculptor. It is faintly visible to the naked eye, with a combined apparent visual magnitude of +5.51.[2] Based upon an annual parallax shift of 12.91 mas as measured from Earth,[1] it is located roughly 250 light years from the Sun.

The pair orbit each other with an estimated period of 616 years, a semimajor axis of 1.5 arc seconds, and an eccentricity of 0.1.[7] Both components are evolved, yellow-white hued, F-type giant stars. The primary, component A, has a visual magnitude of 6.23[2] and a stellar classification of F4 III.[2] The companion, component B, is magnitude 6.29[2] and of class F3 III.[2] Their composite spectrum is classified as F2V.[3] The mass ratio is 0.782, meaning the secondary is only 78.2% as massive as the primary.[12] An 18th magnitude companion star lies 73.4 arc seconds distant along a position angle of 243°, as of 1998.[13]

References

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  13. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Sculptor

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