Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Theta Antliae or IDS 09397-2719 B is a binary star in the constellation Antlia. It is approximately 384 light years from Earth and has a combined apparent magnitude of +4.78. The primary component, Antliae A, is a white A-type main sequence dwarf with an apparent magnitude of +5.6. The companion, Antliae B, is a yellow-white F-type bright giant with an apparent magnitude of +5.7. The binary has an orbital period of 18.3 years and the components are separated by 0.1 arcseconds.