HD 175535 is an entry in the Henry Draper Catalogue (HD), a widely used astronomical catalog that enumerates more than 225 000 stars based on their spectral classifications. As a catalog identifier, “HD 175535” designates a specific star whose detailed astrophysical parameters—including celestial coordinates, apparent magnitude, spectral type, and distance—are recorded in astronomical databases such as SIMBAD and the VizieR service.
The Henry Draper Catalogue, compiled in the early 20th century under the direction of Annie Jump Cannon, assigned HD numbers to stars primarily brighter than about magnitude 9, using photographic spectra to determine their spectral classes. Objects identified by an HD number are therefore recognized by the astronomical community and may be referenced in research literature concerning stellar properties, kinematics, or population studies.
Specific information for HD 175535 (e.g., its right ascension, declination, visual magnitude, spectral classification, and parallax) can be retrieved from professional astronomical archives. These data are determined through observations with ground‑based telescopes and space‑based missions such as Hipparcos and Gaia. Researchers citing HD 175535 typically do so in the context of surveys of stellar populations, investigations of stellar evolution, or as a comparison star in photometric studies.
Because the HD designation provides only a catalog reference, the scientific literature does not attribute an intrinsic meaning or significance to the number itself beyond its role as a unique identifier within the Henry Draper system.
