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lpv of the month

LPV of the Month February, 2018

Z Tauri

Z Tau is an interesting Mira that has been observed by AAVSO observers and members since 1904.  Nearly 6,000 observations are in the AID from over 400 different observers as can be seen in the light curve shown below which displays all observations in the AID.  It is not one of the Legacy LPV Program stars, however there is a good reason why it deserves some special attention! 

LPV of the Month January, 2018

JANUARY 2018

KHI CYGNI

Discovery

The German astronomer Gottfried Kirch discovered its variability in 1686, when in July of that year he observed that the star had disappeared from the sky, not being visible again until the month of October.

The data

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