Alert Notice 688: Anticipated primary eclipse of b Persei in January 2020
December 20, 2019
AAVSO Forum thread (scroll to the bottom of a thread for latest posts):
- Campaigns & Observation Reports: https://www.aavso.org/b-per-campaign-january-2020
b Persei
Alert Notice 610: Anticipated primary eclipse of b Persei by the third star
January 26, 2018: An AAVSO campaign on the bright star b Per has been launched at the request of Dr. Donald F. Collins, who writes:
Alert Notice 537: Observations of a secondary eclipse of b Persei requested
February 26, 2016: Dr. Donald F. Collins (AAVSO member, Swannanoa, NC), Dr. Robert Zavala (US Naval Observatory, Flagstaff Station), and Jason Sanborn (Lowell Observatory) request high time-resolution observations of the bright eclipsing star b Persei (not beta) during an expected secondary eclipse of the third star of the system as it is expected to pass behind the close orbiting stars of the system in the two weeks centered on March 7, 2016. Dr. Collins provides the information below.