Atria is a striking star within the constellation TrA. Positioned about 252.1662° RA and –69.0277° Dec, Atria presents as a relatively bright variable magnitude star, easily observable to the naked eye. Its apparent brightness averages around 1.91, indica
The constellation TrA is notably recognised for Atria’s position within it, owing to the distinctive shape of the constellation’s seven distinct points. Given the star's brightness and relative positioning in relation to other stars in the TrA constellation, it is usually identified as an occasional ‘Alp TrA’. Its brightness alone is a compelling characteristic for a figure to devote to.
Historically, Atria has been considered a significant point of reference in the sky due to its relatively constant brightness, which has allowed for long-term tracking and observation over extended periods. This constant visibility has naturally contributed to it being featured in many observatories, establishing a recognized prominence within astronomical study and mythology. The star offers a compelling vantage point for celestial navigation, its relative visibility a testament to its stability.
The act of dedicating a significant point in the sky to this particular star likely signifies a deliberate choice to place considerable observation and significance into that specific location. It represents a stable and relatively easily identifiable feature within a complex system of celestial patterns, encouraging continued and thorough investigation.
How to see it
Atria has a visual magnitude of about 1.91: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for Atria: right ascension 16h 48m 40s, declination −69° 1′ 40″ (J2000), in the region of the Triangulum Australe constellation (IAU figure TrA).
Catalog context
Atria. It appears in classical and modern catalogs as Bayer/Flamsteed designation Alp TrA, HIP 82273, HD 150798, Gaia DR3 HYG-HIP-82273. In the SkyKeepsake Triangulum Australe (TrA) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 HYG-HIP-82273
- HIP
- 82273
- HD
- 150798
- gaia_dr3
- HYG-HIP-82273
- Bayer / Flamsteed
- Alp TrA
Also known as
- Alp TrA
- Gaia DR3 TOP 5M HYG-HIP-82273
- HD 150798
- HIP 82273
- HYG-HIP-82273
Observed properties
- Visual magnitude
- 1.91