α Tucanae

Alpha Tucanae is the brightest star at a magnitude of 2.9. All other stars here are fourth and fifth magnitude or fainter. An orange giant with a radius of 37 times that of the Sun, alpha is also a spectroscopic binary with an 11.5 year orbit.

The star is circumpolar for anyone living south of Perth or Sydney, or anywhere in New Zealand.

Alpha is found two and a half binocular fields (about 12) due south of Alnair, alpha Gruis: binoculars.

Delta, in the same field, is a binary (h5334)AB: 4.5, 8.7; 279, 7.1".

All files associated with The Constellations Web Page are
1999-2014 by Richard Dibon-Smith.