THE PLANETThe circle shows the location of the class G5 subgiant star 109 Piscium (in the constellation Pisces). With a minimum mass of 6.6 times that of Jupiter, the planet is among the most massive known, and perhaps could even be a small brown dwarf. It is also fairly distant from its parent star, orbiting in a relatively circular path at a distance of 2.0 astronomical units (300 million kilometers, or 185 million miles), 30 percent farther than Mars is from the Sun. |