Double Stars – The Garden Astronomer

17 Canis Majoris: Herschel’s Colorful “Treble” in Canis Major

17 Canis Majoris is a dim star located in the southern constellation of Canis Major, with a visible magnitude of +5.8 under dark sky conditions. Seeing 17 Canis Majoris up close unveils two nearby orange-colored stars of, creating an attractive triangle system. The system is also known as H V 65, 17 CMa, SAO 172569, HD 51055, HR 2588.