Pi Sculptoris
Location of π Sculptoris (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sculptor |
| Right ascension | 01h 42m 08.62230s[1] |
| Declination | −32° 19′ 37.2862″[1] |
| Apparent magnitude (V) | 5.25[2] |
| Characteristics | |
| Evolutionary stage | horizontal branch[3] |
| Spectral type | K1II/III[4] |
| U−B color index | +0.79[5] |
| B−V color index | +1.05[5] |
| Astrometry | |
| Radial velocity (Rv) | +13.83±0.15[1] km/s |
| Proper motion (μ) | RA: −76.714[1] mas/yr Dec.: +4.521[1] mas/yr |
| Parallax (π) | 15.0534±0.1667 mas[1] |
| Distance | 217 ± 2 ly (66.4 ± 0.7 pc) |
| Absolute magnitude (MV) | 1.16[2] |
| Details | |
| Mass | 1.52[3] M☉ |
| Radius | 9.28+0.30 −2.31[1] R☉ |
| Luminosity | 41.173±0.53[1] L☉ |
| Surface gravity (log g) | 2.69[3] cgs |
| Temperature | 4,800+737 −75[1] K |
| Metallicity [Fe/H] | −0.22[3] dex |
| Rotational velocity (v sin i) | < 1.6[6] km/s |
| Other designations | |
| π Scl, CPD−32°4292, FK5 1048, GC 2085, HD 10537, HIP 7955, HR 497, SAO 193263, GSC 07003-02207[7] | |
| Database references | |
| SIMBAD | data |
π Sculptoris, Latinized as Pi Sculptoris, is candidate astrometric binary[8] star system in the southern constellation Sculptor, positioned near the eastern constellation border with Fornax. It has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.25.[2] Based upon parallax measurements, the system is located at a distance of 66 light years from the Sun, and is drifting further away with a radial velocity of +14 km/s.[1]
The visible component is an aging giant/bright giant star with a stellar classification of K1II/III.[4] It is a red clump giant, which indicates it is on the horizontal branch and is generating energy through core helium fusion.[3] The star has 1.5[3] times the mass of the Sun and 9.3[1] times the Sun's radius. It is radiating 41[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,800 K.[1]
References
[edit | edit source]- ^ a b c d e f g h i j k l m Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR2 record for this source at VizieR.
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).Vizier catalog entry
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
