Al Alkalurops B
Constellation CrB Coordinates RA 231.1278°, Dec 37.3477° Visual magnitude 6.888 Distance 119.8 light years Parallax 27.22 mas Proper motion RA -139.1 mas/yr Proper motion Dec 90.28 mas/yr Identifiers: Gaia 1387349065967311744, HIP 75415, HD 137392 Alias: 51Mu 2Boo
This star offers a surprisingly bright point of light amidst the darkness. Alkalurops B is a relatively small, ultra-red dwarf, and its extraordinary brightness is thanks to its early formation, positioned significantly closer to Earth than many other stars. Considering its spectral type, it is best classified as a giant negative red dwarf, which means it absorbs more blue light and appears red. This, paired with its extreme distance, results in a truly unique visual display, making it a captivating addition to astronomy.
The positioning of Alkalureps B in the CrB constellation makes it a memorable landmark for those seeking to appreciate a specific part of the celestial sphere. The star’s high visual magnitude of 6.888 indicates that it is noticeably noticeable from a cursory observation. While we have no precise color, its position in the dark sky makes it uniquely recognizable amidst countless other stars of varying brightness. Its existence challenges our understanding of early star development and highlights the delicate balance between distance and luminosity in the universe’s history.
Al Alkalurops B represents a fascinating example of an outlier among stellar systems. It’s a dwarf, and its longevity provides a point of particular interest for astronomers seeking to observe the evolution of stellar remnants. Due to its recent discovery, and combined physical attributes, Alkalurops B remains an exciting entry point in the ongoing study of this star system's history. The stellar data available indicates that it is a relatively rare object for a star of this class, further fueling ongoing research and scientific debate about its origins.
How to see it
Alkalurops B has a visual magnitude of about 6.89: it usually needs binoculars or a small telescope, especially from light-polluted sites.
Sky position
Equatorial coordinates for Alkalurops B: right ascension 15h 24m 31s, declination +37° 20′ 52″ (J2000), in the region of the Corona Borealis constellation (IAU figure CrB).
Catalog context
Alkalurops B. It appears in classical and modern catalogs as Bayer/Flamsteed designation 51Mu 2Boo, HIP 75415, HD 137392, Gaia DR3 1387349065967311744. In the SkyKeepsake Corona Borealis (CrB) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 1387349065967311744
- HIP
- 75415
- HD
- 137392
- gaia_dr3
- 1387349065967311744
- Bayer / Flamsteed
- 51Mu 2Boo
Observed properties
- Visual magnitude
- 6.89