The designation 109 Tauri refers to a Flamsteed number assigned to a star located in the constellation Taurus. Flamsteed designations are a system of naming stars based on their order of right‑ascension within a given constellation, as catalogued by John Flamsteed in the early 18th century.
Beyond its identification as a numbered star in Taurus, the term does not correspond to a widely recognized astronomical object in mainstream literature, and detailed, reliably sourced information such as precise coordinates, apparent magnitude, spectral classification, distance, or astrophysical characteristics is not readily available in standard encyclopedic references. Consequently, the entry lacks sufficient verifiable data to provide a comprehensive description.
Possible contextual usage
- In star‑catalogue listings, “109 Tauri” may appear alongside other identifiers (e.g., HD 23630, HIP 17608) that refer to the same celestial object.
- The name may be used in observational guides for amateur astronomers when locating stars in the Taurus region.
Etymology
The name combines the Flamsteed number “109,” indicating its sequential order in right ascension within Taurus, with the Latin genitive form of the constellation name “Tauri” (of Taurus).