AAVSO Alert Notice 462Monitoring of J1407 for next extrasolar ring system transit
June 26, 2012
Dr. Eric Mamajek (Cerro Tololo Interamerican Observatory and University of Rochester) has requested AAVSO observers’ assistance in monitoring the young star 1SWASP J140747.93-394542.6 to help determine the eclipse behavior related to a transiting ringed substellar companion.
This observing campaign begins now and continues until … Read the rest of this article





