1SWASP J140747.93-394542.6, also known as V1400 Centauri, 1SWASP J140747, J1407, and Mamajek's Object is a star similar to the Sun, located 434 light years away from Earth in the constellation Centaurus. It is relatively young, estimated to be about 16 million years old. The mass is around 90% that of the Sun's. The star has an apparent magnitude of 12.3. The star's name is from the SuperWASP program and the star's coordinates. The star is variable due to the planet orbiting around it and has been given the variable star designation V1400 Centauri.
Planetary system[]
Artist conception of J1407b's ring system
An extrasolar planet, 1SWASP J140747.93-394542.6 b, also known as J1407b, was discovered in 2012 by a team led by University of Rochester astronomer Eric Mamajek. The existence of the ring system were deduced from the observation of a very long and complex eclipse of the parent star, lasting 56 days between April and May 2007. The exoplanet has been described as a "Saturn on steroids", "Lord of the Rings", or a "Super Saturn", due to its massive ring system which have a radius of about 90 million km (0.6 AU).
| Planet | Mass | Semimajor axis | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 20.0 Jupiter mass | 3.9 AU | 3725 | <0.6 | N/A | N/A |