| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 59m 10.7311s[2] |
| Declination | −49° 26′ 00.453″[2] |
| Apparent magnitude (V) | 9.92 to 11.24[3] |
| Characteristics | |
| Spectral type | A3 II[4] |
| B−V color index | 0.9[2] |
| Variable type | RRab[3] |
| Astrometry | |
| Radial velocity (Rv) | 185 ± 655.35[2] km/s |
| Proper motion (μ) | RA: −26.24[2] mas/yr Dec.: −8.44[2] mas/yr |
| Parallax (π) | 1.1191 ± 0.0431 mas[5] |
| Distance | 2,900 ± 100 ly (890 ± 30 pc) |
| Absolute magnitude (MV) | +0.78 – +0.93[6] |
| Details | |
| Mass | 0.51 – 0.62[6] M☉ |
| Radius | 3.01[5] R☉ |
| Luminosity | 27[5] L☉ |
| Surface gravity (log g) | +2.9[6] cgs |
| Temperature | 6,563[5] K |
| Metallicity [Fe/H] | −0.90[6] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
S Arae (S Ara) is an RR Lyrae-type pulsating variable star in the constellation of Ara.[2] It has an apparent visual magnitude which varies between 9.92 and 11.24 during its 10.85-hour pulsation period,[1][3] and it exhibits the Blazhko effect.[6]
- ^ a b Cite error: The named reference
Chadidwas invoked but never defined (see the help page). - ^ a b c d e f g h "V* S Ara". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 November 2009.
- ^ a b c S Ara, database entry, The combined table of GCVS Vols I-III and NL 67–78 with improved coordinates, General Catalogue of Variable Stars Archived 20 June 2017 at the Wayback Machine, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line 10 November 2009.
- ^ Stock, J.; Wroblewski, H. (1972). "A southern objective prism survey". Publ. Obs. Astron. Nacional. 2: 59. Bibcode:1972PDAUC...2...59S.
- ^ a b c d Cite error: The named reference
aaa2018_616A_1Gwas invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
zalianwas invoked but never defined (see the help page).