Lambda Centauri Nebula
IC 2944
Dados do Objeto
- Designação do Catálogo
- C100
- Tipo
- EmissionNebula
- Constelação
- Centaurus
- Magnitude
- 4.5
- Ascensão Reta
- 11h 46m 36.0s
- Declinação
- -63° 22' 58.8"
- Distância
- 5,900 anos-luz
- Tamanho Angular
- 75
Imagem de Levantamento
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Sobre Lambda Centauri Nebula
Descrição
The Lambda Centauri Nebula (IC 2944) is an emission nebula and open cluster complex in Centaurus, about 5,900 light-years away. The nebula surrounds the hot O-type star Lambda Centauri and is famous for containing Thackeray's Globules — dark, dense clouds silhouetted against the bright emission.
Dicas de Observação
The cluster is easy in binoculars, centered on the bright star Lambda Centauri. The nebulosity requires an OIII filter and at least a 6-inch telescope. The famous dark globules require a large aperture (12-inch+) or deep imaging. Best from southern latitudes in spring and summer.
História
The nebula was cataloged by Royal H. Frost in 1903. The dark globules were discovered by South African astronomer A.D. Thackeray in 1950 and became some of the first recognized examples of small dense clouds that may collapse to form new stars.
Curiosidades
Thackeray's Globules are dense, dark clouds about 1.4 light-years across and roughly 15 solar masses each. Originally thought to be collapsing to form stars, studies now suggest they are being eroded away faster than they can collapse.
Fotos da Comunidade (1)
Credit: European Southern Observatory. License: CC BY 4.0. (Wikimedia Commons)
Skybred Mar 2, 2026