Constellations
Equuleus constellation
Equuleus, the Little Horse, is the second-smallest of the 88 constellations after Crux. Ptolemy already listed it, and it may go back to the Greek astronomer Hipparchus. Only the head of a young horse is depicted; there is no clear myth, though it is sometimes considered the brother or foal of Pegasus, beside which it stands in the sky. It lies between Pegasus and Delphinus and consists only of faint stars. The brightest, Kitalpha, reaches about fourth magnitude, and its Arabic name means roughly “part of the horse”. There are hardly any notable deep-sky objects for small instruments, though a few double stars reward telescope users. From Central Europe, Equuleus is visible in the south on late summer and autumn evenings, best under a dark sky.
The brightest stars in Equuleus
| Star | HIP | Magnitude | Distance | Light set off | Name this star |
|---|---|---|---|---|---|
| Kitalphaα Equ | 104987 | 3.92 | 190 light years | around 1840 | Name this star: Kitalpha |
| δ Equ | 104858 | 4.47 | 60 light years | around 1966 | Name this star: δ Equ |
| γ Equ | 104521 | 4.70 | 118 light years | around 1910 | Name this star: γ Equ |
| β Equ | 105570 | 5.16 | 331 light years | around 1700 | Name this star: β Equ |
| HIP 103571 | 103571 | 5.24 | 184 light years | around 1840 | Name this star: HIP 103571 |
| ε Equ | 103569 | 5.30 | 176 light years | around 1850 | Name this star: ε Equ |
| 3 Equ | 104031 | 5.63 | 769 light years | around 1260 | Name this star: 3 Equ |
| 9 Equ | 105413 | 5.81 | 655 light years | around 1370 | Name this star: 9 Equ |
| 4 Equ | 104101 | 5.94 | 160 light years | around 1870 | Name this star: 4 Equ |
| HIP 105224 | 105224 | 5.97 | 943 light years | around 1080 | Name this star: HIP 105224 |
| HIP 103652 | 103652 | 5.98 | 247 light years | around 1780 | Name this star: HIP 103652 |
| 6 Equ | 104538 | 6.07 | 443 light years | around 1580 | Name this star: 6 Equ |
| HIP 104357 | 104357 | 6.14 | 1,165 light years | around AD 860 | Name this star: HIP 104357 |
| HIP 105695 | 105695 | 6.33 | 371 light years | around 1660 | Name this star: HIP 105695 |
| HIP 104041 | 104041 | 6.41 | 493 light years | around 1530 | Name this star: HIP 104041 |
Distances from the Hipparcos catalogue. For very distant stars they are uncertain – the year the light set off is therefore only a rough guide.
Frequently asked questions
When can you see the Equuleus constellation?
The best time to see Equuleus is in the evening in September, when the constellation reaches its highest point in the south around 10 pm.
What is the brightest star in Equuleus?
The brightest star in Equuleus is Kitalpha (α Equ) with an apparent magnitude of 3.92, about 190 light years away.
Can I name a star in Equuleus?
Yes – for free at Sternschenker. Our catalogue contains 17 naked-eye stars in Equuleus. Pick one, give it a name and download your certificate as a PDF. The name is symbolic and not recognised by the IAU.
Which star will it be?
The sky is waiting. Naming your star takes about two minutes.
Name a star in Equuleus