Capricornus
The sea goat. Genitive Capricorni, abbreviated Cap. Introduced by Ptolemy.
Area
413.93 sq°
40 of 88 by size
Brightest star
δ Capricorni
magnitude 2.87
Best seen
August
on the meridian at midnight
Visible from
82°N to 90°S
some part above the horizon
Where it is
| Measure | Value |
|---|---|
| Centre | 21h 01m, −18.7° |
| Declination range | −27.6° to −8.4° |
| Naked-eye stars | 80 to magnitude 6.5, 1 to magnitude 3 |
| Borders | Aquarius, Aquila, Microscopium, Piscis Austrinus, Sagittarius |
Principal stars
Every star to magnitude 4, brightest first.
| Star | Magnitude | HR |
|---|---|---|
| δ Capricorni | 2.87 | 8322 |
| β Capricorni | 3.08 | 7776 |
| α2 Capricorni | 3.57 | 7754 |
| γ Capricorni | 3.68 | 8278 |
| ζ Capricorni | 3.74 | 8204 |
Deep sky
Objects with a Messier number or a name people use.
| Object | Catalogue | Type | Magnitude | Size |
|---|---|---|---|---|
| M30 | NGC 7099 | Globular cluster | 7.5 | 11.0 |
- Magnitude: — where NGC 2000 gives none.
- Size: the largest dimension, in arcminutes.
My Sky
Rise, highest and set over your place, for any night: Capricornus
Further info
Sources
Principal stars: Bright Star Catalogue
Deep sky: NGC 2000.0
Area and borders: IAU constellation boundaries
