25 Serpentis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 46m 05.63636s[1] |
| Declination | −01° 48′ 15.0830″[1] |
| Apparent magnitude (V) | 5.39 |
| Characteristics | |
| Astrometry | |
| Other designations | |
25 Serpentis is a binary star in the constellation Serpens.[1] It is a spectroscopic binary[2] consisting of a hot B-type giant and an A-type main-sequence star. The primary is a Slowly pulsating B star, which causes the system to vary by 0.03 magnitudes.[3]
References
- 1 2 3 "25 Serpentis -- Spectroscopic binary". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 2 July 2014.
- ↑ Petrie, R. M.; Phibbs, E. (1950). "Redetermination of the spectrographic orbits of iot Peg and 25 Ser.". Publications of the Dominion Astrophysical Observatory Victoria. 8: 225. Bibcode:1950PDAO....8..225P.
- ↑ VSX; Otero, S. A (10 February 2012). "PT Serpentis". AAVSO Website. American Association of Variable Star Observers. Retrieved 28 May 2014.
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