Caelum constellation: how to find it, when to see it and what is in it
In short
Caelum (Cae) is a southern constellation covering 125 square degrees, number 81 of 88 by size. It has no bright stars — the brightest is magnitude 4.4, so you need a dark sky. It is best seen in the evening in January. Over London it stays low — you need an open southern horizon. Its neighbours in the sky: Columba, Dorado, Eridanus, Horologium, Lepus, Pictor.
Area: 125 square degrees, 81 of 88 · Neighbours: Columba, Dorado, Eridanus, Horologium, Lepus, Pictor · Updated 10 October 2026
How to find Caelum
- 1
When to look
The best time is in January in the evening: —.
- 2
Use the neighbours
Find it from the neighbouring constellations: Columba, Dorado, Eridanus, Horologium.
- 3
Brightest stars
The brightest stars of the figure: α Cae (4.4ᵐ), β Cae (5.1ᵐ), δ Cae (5.1ᵐ).
When it is visible over London
| Month | Where and when | Conditions |
|---|---|---|
| January — december | — | not visible, behind the Sun |
Stars of the constellation
| Star | What it is | Magnitude |
|---|---|---|
| α Cae | yellow-white main-sequence star | 4.4ᵐ |
| β Cae | yellow-white main-sequence star | 5.1ᵐ |
| δ Cae | blue-white subgiant | 5.1ᵐ |
Caelum FAQ
When is the best time to see Caelum?
Where is Caelum in the sky?
What is the brightest star in Caelum?
Neighbouring and other constellations
Related
Constellation lines: Stellarium, CC BY-SA · star names: IAU WGSN, CC BY 4.0