Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Sculptor |
Right ascension | 01h 02m 26.43280s [1] |
Declination | −31° 33′ 07.2237″ [1] |
Apparent magnitude (V) | +5.54 [2] |
Characteristics | |
Spectral type | A1/A2 IV [3] |
U−B color index | +0.13 [2] |
B−V color index | +0.06 [2] |
Variable type | α2 CVn [4] |
Astrometry | |
Radial velocity (Rv) | −15.40±0.50 [5] km/s |
Proper motion (μ) |
RA: +80.50
[1]
mas/
yr Dec.: +14.64 [1] mas/ yr |
Parallax (π) | 14.04 ± 0.32 mas [1] |
Distance | 232 ± 5
ly (71 ± 2 pc) |
Absolute magnitude (MV) | +1.24 [6] |
Details | |
Mass | 2.07 [7] M☉ |
Radius | 2.2 [8] R☉ |
Luminosity | 25.7 [9] L☉ |
Surface gravity (log g) | 4.02±0.14 [7] cgs |
Temperature | 9,005±306 [7] K |
Rotational velocity (v sin i) | 82.1±1.2 [10] km/s |
Age | 464 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Sigma Sculptoris, Latinized from σ Sculptoris, is a solitary, [12] white-hued star in the southern constellation of Sculptor. It is faintly visible to the naked eye with an apparent visual magnitude of +5.54. [2] Based upon an annual parallax shift of 14.04 mas as seen from Earth, [1] it is located about 232 light years from the Sun.
This is an A-type subgiant with a stellar classification of A1/A2 IV. [3] It is a suspected Ap star and is classified as an Alpha2 Canum Venaticorum variable [4] with a periodicity of 2.37 days. [13] The star has an estimated 2.07 [7] the mass of the Sun and around 2.2 [8] times the Sun's radius. It is spinning with a projected rotational velocity of 82 km/s [10] and is about 464 million years old. [7] Sigma Sculptoris radiates 25.7 [9] times the solar luminosity from its photosphere at an effective temperature of 9005 K. [7]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Sculptor |
Right ascension | 01h 02m 26.43280s [1] |
Declination | −31° 33′ 07.2237″ [1] |
Apparent magnitude (V) | +5.54 [2] |
Characteristics | |
Spectral type | A1/A2 IV [3] |
U−B color index | +0.13 [2] |
B−V color index | +0.06 [2] |
Variable type | α2 CVn [4] |
Astrometry | |
Radial velocity (Rv) | −15.40±0.50 [5] km/s |
Proper motion (μ) |
RA: +80.50
[1]
mas/
yr Dec.: +14.64 [1] mas/ yr |
Parallax (π) | 14.04 ± 0.32 mas [1] |
Distance | 232 ± 5
ly (71 ± 2 pc) |
Absolute magnitude (MV) | +1.24 [6] |
Details | |
Mass | 2.07 [7] M☉ |
Radius | 2.2 [8] R☉ |
Luminosity | 25.7 [9] L☉ |
Surface gravity (log g) | 4.02±0.14 [7] cgs |
Temperature | 9,005±306 [7] K |
Rotational velocity (v sin i) | 82.1±1.2 [10] km/s |
Age | 464 [7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Sigma Sculptoris, Latinized from σ Sculptoris, is a solitary, [12] white-hued star in the southern constellation of Sculptor. It is faintly visible to the naked eye with an apparent visual magnitude of +5.54. [2] Based upon an annual parallax shift of 14.04 mas as seen from Earth, [1] it is located about 232 light years from the Sun.
This is an A-type subgiant with a stellar classification of A1/A2 IV. [3] It is a suspected Ap star and is classified as an Alpha2 Canum Venaticorum variable [4] with a periodicity of 2.37 days. [13] The star has an estimated 2.07 [7] the mass of the Sun and around 2.2 [8] times the Sun's radius. It is spinning with a projected rotational velocity of 82 km/s [10] and is about 464 million years old. [7] Sigma Sculptoris radiates 25.7 [9] times the solar luminosity from its photosphere at an effective temperature of 9005 K. [7]