|Pronunciation||//, genitive //|
|Right ascension||5 h|
|Area||125 sq. deg. (81st)|
|Stars with planets||0|
|Stars brighter than 3.00m||0|
|Stars within 10.00 pc (32.62 ly)||1|
|Brightest star||α Cae (4.45m)|
|Nearest star||RR Cae
(26.31 ly, 8.07 pc)
|Visible at latitudes between +40° and −90°.
Best visible at 21:00 (9 p.m.) during the month of January.
Caelum // is a faint constellation in the southern sky, introduced in the 1750s by Nicolas Louis de Lacaille. Its name means "the chisel" in Latin, and it was formerly known as Caelum Scalptorium, "the engraver's chisel". It is the eighth smallest constellation, and subtends a solid angle of around 0.038 steradians, just less than that of Corona Australis.
- γ Cae is a double star with an orange-hued primary of magnitude 4.6 and a secondary of magnitude 8.1. The primary is 185 light-years from Earth. The two components are difficult to resolve with small amateur telescopes because of their difference in visual magnitude and their close separation.
Caelum contains the galaxies NGC 1571, NGC 1679 and IC 2106. Larger telescopes are needed to see several NGC objects, all galaxies, but none brighter than magnitude 11.5 or larger than 3 arc minutes.
|Wikimedia Commons has media related to Caelum.|
- Starry Night Photography - Caelum Constellation
- Star Tales – Caelum
- Caelum Constellation at Constellation Guide