J1407

J1407 (or 1SWASP J140747.93-394542.6 or 1SWASP J140747) is a Sun-like star about 450 light-years away, discovered by SuperWASP. It came to attention because an eclipse was observed that suggested a companion with a ring system, like that of Saturn but much, much larger (on the order of an AU in diameter, roughly 200 times the diameter of Saturn's ring system). Light-curve patterns of the darkening could be explained by a planet's such rings passing in front of the star. The ring system was hypothesized to be that of an extra-solar planet hosted by the star, which has been called J1407b. However, it has since been hypothesized to have been a passing object such as a free-floating planet with such a ring system. Star characteristics:

• Centaurus - constellation.
• 14h07m47.92976s - right ascension.
• -39deg45m42.7671s - declination.
• +12.2 to +15.6 - apparent magnitude (V).
• 450 ly - distance.
• K5 IVe Li - spectral type.
• 0.977 - mass(solar).
• 1.0661 - radius(solar)
• 0.3431 - luminosity(solar)