Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HD 10647, also known as q1 Eridani by the extended Bayer system, is a yellow-white dwarf star approximately 57 light-years away in the constellation of Eridanus. It is a relatively nearby 6th magnitude star. The star should be visible to the unaided eye under very dark skies, but with binoculars it is an easy target. It is slightly hotter and more luminous than the Sun. It is also younger being 1,750 million years old. As of 2003, a long-period extrasolar planet has been confirmed to orbit around the star.