HD 1
Appearance
HD 1 (also named HIP 422), is the first star catalogued in the Henry Draper Catalogue and the 422nd star catalogued in the Hipparcos Catalogue. The star is located in the northern circumpolar constellation Cepheus and has an apparent magnitude of 7.42,[1] making it readily visible in binoculars, but not to the naked eye. The star is located relatively far away at a distance of 1,220 light years but is approaching the Solar System with a spectroscopic radial velocity of −27.3 km/s.[2]
![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Cepheus_constellation_map.svg/220px-Cepheus_constellation_map.svg.png)
References
[change | change source]- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000-03-01). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
- ↑ "Digital Object Identifier System". doi.org. Retrieved 2022-11-11.