UMa: Phecda
Phecda is a significant star within the Large Magellanian constellation, a relatively dim star in the southern night sky. Approximately 120 light-years from Earth, Phecda orbits the center of the constellation, appearing as a relatively low-hanging point of light. The magnitude of this star is 2.41, making it visible to the naked eye with minimal effort, although precise observation and charting require more skilled eyes. It is located approximately 217.65° RA and 53.81° Dec. It is identified with Gaia HYG-HIP-58001, HIP 58001, and HD 103287. The star is an Ia type variable, meaning its light curve shifts. It is currently classified as a red giant.
Phecda’s relatively small size and brightness in comparison to the wider star field suggests it was likely a solitary star within the relatively dense region of its stellar nursery during its formation, perhaps influenced by gravitational anomalies in the galaxy's early structure. For centuries, its significance stems from its relative lack of luminosity and its alignment within the constellation itself, a position that has inspired speculation about its astronomical importance throughout human history. In some cultures, the star was associated with both the hunt and a place of contemplation, making it a symbol for good fortune and a reminder to approach caution and diligence.
The observation of Phecda exemplifies an ancient astronomical practice of charting by location, where the apparent pattern of nearby stars was carefully observed and cataloged. The lack of a vibrant, bright halo or ring around Phecda suggests it might have been an outlier, situated relatively far away from the concentrated mass of brighter stars typical of a region at a particular galactic location. Its comparatively slow stellar evolution, a common trend observed within a stellar cluster, underlines the importance of understanding those aging characteristics as a component of the larger data set.
How to see it
Phecda has a visual magnitude of about 2.41: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for Phecda: right ascension 11h 53m 50s, declination +53° 41′ 41″ (J2000), in the region of the Ursa Major constellation (IAU figure UMa).
Catalog context
Phecda. It appears in classical and modern catalogs as Bayer/Flamsteed designation 64Gam UMa, HIP 58001, HD 103287, Gaia DR3 HYG-HIP-58001. In the SkyKeepsake Ursa Major (UMa) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 HYG-HIP-58001
- HIP
- 58001
- HD
- 103287
- gaia_dr3
- HYG-HIP-58001
- Bayer / Flamsteed
- 64Gam UMa
Also known as
- 64Gam UMa
- Gaia DR3 TOP 5M HYG-HIP-58001
- HD 103287
- HIP 58001
- HYG-HIP-58001
Observed properties
- Visual magnitude
- 2.41