Skip to main content



Please Note: SeqPlot is a tool designed for use by the Sequence Team to create comparison star sequences for use in AAVSO Charts. For consistency sake, all variable star data submitted to the AAVSO database should be based on comparison star sequences chosen by this experienced team of volunteers. If you need a sequence or a revision to a sequence for a star, please follow the instructions given here to make your request and you will receive a response from the Team in a very timely manner.

AAVSO Photometric All-Sky Survey: Data Release 1

AAVSO Photometric All-Sky Survey (APASS)

Data Release 1

September 10, 2010

Arne Henden (AAVSO), Matthew Templeton (AAVSO), Dirk Terrell (SwRI), Tom C. Smith (DRO), Stephen Levine (Lowell), Doug Welch (McMaster)

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484