出典:Wiktionary
出典:『Wiktionary』 (2025/11/13 02:25 UTC 版)
From Latin Procyōn, from Ancient Greek Προκύων (Prokúōn), from πρό (pró, “before”) + κύων (kúōn, “dog”), in reference to it preceding the "Dog Star" Sirius.
Procyon
From Ancient Greek Προκύων (Prokúōn), from πρό (pró, “before”) + κύων (kúōn, “dog”), in reference to it preceding the "Dog Star" Sirius.
Procyōn m sg (genitive Procyōnis); third declension
Third-declension noun, singular only.
| singular | |
|---|---|
| nominative | Procyōn |
| genitive | Procyōnis |
| dative | Procyōnī |
| accusative | Procyōnem |
| ablative | Procyōne |
| vocative | Procyōn |
出典:Wikipedia
出典:『Wikipedia』 (2011/06/30 06:13 UTC 版)
Procyon (α CMi, α Canis Minoris, Alpha Canis Minoris) is the brightest star in the constellation Canis Minor. To the naked eye, it appears to be a single star, the seventh brightest in the night sky with a visual apparent magnitude of 0.34. It is actually a binary star system, consisting of a white main sequence star of spectral type F5 IV-V, named Procyon A, and a faint white dwarf companion of spectral type DA, named Procyon B. The reason for its brightness is not its intrinsic luminosity but its closeness to the Sun; at a distance of 3.5 pc or 11.41 light years, Procyon is one of our near neighbours. Its closest neighbour is Luyten's Star, 0.34 pc or 1.11 ly away.