54 Piscium b [SEP] constellation
54 Piscium b
54 Piscium b (HD 3651 b), occasionally catalogued as 54 Piscium Ab in order to differentiate from the brown dwarf in the system, is an extrasolar planet approximately 36 light-years away in the constellation of Pisces. The planet was discovered orbiting the orange dwarf star 54 Piscium. The planet's minimum mass is one fifth that of Jupiter, and it orbits the star in a very eccentric orbit about every two months.
Discovery.
On January 16, 2002, a team of astronomers
Preliminary astrometric measurements suggested that the orbital inclination is 170.3°, yielding an object mass of 38 times that of Jupiter, which would make it a brown dwarf. However, subsequent analysis indicates that the precision of the measurements used to derive the astrometric orbit is insufficient to constrain the parameters, so the true inclination and mass remain unknown.
A more plausible suggestion is that this planet shares its star's inclination, of 69°.
See also.
- 54 Piscium b - another nearby planet in the constellation of