Tianyi is a fascinating star located in the UMi constellation, identified by its remarkable magnitude of 4.784. This star isn’t simply a simple star, but a rather distinct celestial body with a long and well-documented history. Tianyi’s proper naming rema
Within our astronomical observations, Tianyi possesses a unique placement in the sky—it is known for its luminosity, appearing as a medium-sized star in the Night Sky. Its designation in the catalog simply indicates its precise coordinate and location. This star is easily discernible as a bright point of light in the southern hemisphere.
The star’s recognizable position within our observations stems from the fact that it's a relatively low-magnitude star, easily seen against the darker parts of the night sky. Its proximity to Earth, combined with its inherent brightness, contributes to its visible prominence. Its orbit, as tracked through observations, suggests a reasonably stable and consistent position across vast stretches of the sky, making its observation routine and accessible to astronomers and enthusiasts. It’s a prominent example of a relatively faint, yet impactful star in our galactic neighborhood.
It's worth noting that due to certain historical conditions, this star has been consistently marked with the alias 7 Dra, a designation commonly used in astronomical research, likely referencing a particular galactic kinematic signature, though its precise significance has varied across different studies.
How to see it
Tianyi has a visual magnitude of about 4.78: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for Tianyi: right ascension 12h 47m 34s, declination +66° 47′ 25″ (J2000), in the region of the Ursa Minor constellation (IAU figure UMi).
Catalog context
Tianyi. It appears in classical and modern catalogs as Bayer/Flamsteed designation 7 Dra, HIP 62423, HD 111335, Gaia DR3 1679124752931512960. In the SkyKeepsake Ursa Minor (UMi) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 1679124752931512960
- HIP
- 62423
- HD
- 111335
- gaia_dr3
- 1679124752931512960
- Bayer / Flamsteed
- 7 Dra
Observed properties
- Visual magnitude
- 4.78