R Pictoris
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 04h 46m 09.54675s[2] |
| Declination | −49° 14′ 45.0647 ″[2] |
| Apparent magnitude (V) | 6.35[2] |
| Characteristics | |
| Spectral type | M1IIe-M4IIe[3] |
| Variable type | Semiregular |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Pictoris is a semiregular variable type star in the constellation Pictor. It ranges between apparent magnitude 5.1 and 14.4, and spectral types M1IIe to M4IIe, over a period of 168 days.[3] It should be faintly visible to the naked eye of an observer with excellent observing conditions, when it is near its maximum brightness.
In 1895, Williamina Fleming discovered that the star is a variable star.[4] In 1907 it appeared with its variable star designation, R Pictoris, in Annie Jump Cannon's Second Catalog of Variable Stars.[5]
References
[edit]- ^ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
- ^ a b c SIMBAD, R Pictoris (accessed 23 May 2014)
- ^ a b Otero, Sebastian Alberto (7 June 2011). "R Pictoris". AAVSO Website. American Association of Variable Star Observers. Retrieved 23 May 2014.
- ^ "R Pic". The International Variable Star Index. AAVSO. Retrieved 16 December 2024.
- ^ Cannon, Annie J. (1907). "Second catalogue of variable stars". Annals of Harvard College Observatory. 55: 1–94. Bibcode:1907AnHar..55....1C. Retrieved 16 December 2024.
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