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V4334 Sagittarii

Sakurai's Object

V4334 SGR is well known as "Sakurai's Object". It was discovered as a variable on February 20, 1996 by Yukio Sakurai of Japan while he was looking for comets. (Imagine the numbers of variables discovered this way!) At the time, it was a new 12th magnitude star thought to be a novae. But pretty soon it was realized things were not quite so simple.

TT Arietis

The Mysterious Ways of TT Arietis

FG Sagittae

Prepared by Aaron Price - November 1998

At the AAVSO Annual Meeting in October, AAVSO Council Member Ron Royer presented a paper titled "FG Sge: Amateur Challenge, Professional Enigma". Below is the abstract:

FG Sagittae - Revisited

A white dwarf in the making

Everything changes. Even the stars in the sky.

VY Canis Majoris

Artist rendering of  VY 

The above image is an artist rendering of VY CMa by former AAVSO staff member Neil Braun.

W Ursae Majoris

W Ursae Majoris Discovered


V1478 Cyg

When searching for information, including data and charts, and when submitting observations for MWC 349 within the framework of the AAVSO, be sure to use the variable star name of V1478 Cyg!

The Emission Line Star V1478 Cyg (MWC 349)

The Beta Cephei Stars and Their Relatives

Q. What class of variable star is most numerous among the very brightest stars?

A. The β Cephei stars

Q. What class of variable star is probably unfamiliar to most AAVSO observers?

A. The β Cephei stars

The Quasar 3C 273

Markarian 421

A Rose by Any Other Name...



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