View Full Version : Disappearing - Reappearing Star: KH 15D

2003-Nov-24, 08:07 AM
In case anyone finds this interesting:

KH 15D Is a 16th magnitude star that periodically dims out by 3 magnitudes in a regular cycle, much more than other eclipsing binary formations. Why? It might be a solar system in the making, with a younger version of our Sun, and a proto-planetary disk of dust, rocks and larger asteroids, seen edge on from Earth.

Van Vleck Observatory web site explains:


Also found in a related link:

Defining a Planet: http://exoplanets.org/defn.html