Equuleus
- Abbreviation:
- Equ
- Genitive:
- Equulei
- Translation:
- The Foal
- Right Ascention:
- 21h 0m
- Declination:
- 10°
The second smallest constellation, Equuleus is often thought of as Celeris, the offspring of Pegasus, and the gift to Castor from Mercury. Because it rises before Pegasus, it is often called the .first horse.