Magnitude 9.03 Apparent magnitude (V) 9.03 | Constellation Andromeda | |
 | ||
People also search for RY Andromedae, RV Andromedae | ||
RT Andromedae is a variable star in the constellation of Andromeda. It is classified as a RS Canum Venaticorum variable, a type of close eclipsing binary star, and varies from an apparent visual magnitude of 9.83 at minimum brightness to a magnitude of 8.97 at maximum brightness, with a period of 0.6289216 days.
Presence of a third body
According to Pribulla et al. (2000) a third object could be present in the system. Minimum mass is estimated 5 percent of Solar mass (roughly 50 times the mass of Jupiter), orbital period close to 85 years and eccentricity is inferred to be high (e=0.56). Such object could likely turn out a brown dwarf or even a massive jovian planet. Nevertheless, recent paper of Manzoori (2009) states that minimum mass of the third body is likely close to 0.6 Solar masses, making the object stellar rather substellar. Also orbital period turns out longer than 85 years.