Psi Sagittarii
 | ||
| Observation data ICRS )
| ||
|---|---|---|
| Constellation | Sagittarius | |
| Right ascension | 19h 15m 32.42658s[1] | |
| Declination | −25° 15′ 24.0569″[1] | |
| Apparent magnitude (V) | +4.86[2] | |
| Characteristics | ||
| Spectral type | K2 III + A9 III + A3 V[3] | |
| B−V color index | 0.569±0.006[2] | |
| Absolute magnitude (MV) | 0.06[2] | |
Semi-amplitude (K1)(primary) | 10.0 km/s | |
| Semi-amplitude (K2) (secondary) | 13.8 km/s | |
| Details | ||
| A | ||
| Mass | 2.10[6] M☉ | |
| Luminosity | 84[2] L☉ | |
| Ba/Bb | ||
| Mass | 1.70/2.70 M☉ | |
| Database references | ||
| SIMBAD | data | |
Psi Sagittarii, which is
apparent visual magnitude of +4.86.[2]
The inner pair of this triple star system, components Ba and Bb, have an
K-type giant with a class of K2 III.[3]
Name and etymology
According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, this star was titled as Al Kiladah.[9] This star, together with τ Sgr, ν Sgr, ω Sgr, 60 Sgr and ζ Sgr were Al Udḥiyy, the Ostrich's Nest.[10]
References
- ^ S2CID 18759600.
- ^ S2CID 119257644.
- ^ doi:10.1086/508053.
- ^ .
- ^ S2CID 119387088.
- S2CID 16452670.
- ^ "psi Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-07-02.
- ^ S2CID 14878976.
- ^ Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), California Institute of Technology: Jet Propulsion Laboratory, retrieved 2017-07-02.
- ISBN 0-486-21079-0. Retrieved 2012-09-04.
External links
- Kaler, James B. (November 4, 2016), "Psi Sagittarii", STARS.
