Asellus Tertius (κ Boötis) | Facts, Formation, Distance, Size & Mass
Kappa Boötis (Asellus Tertius): A Double Star of White and Deep Blue in Boötes – The Garden Astronomer
Observing the sky at 30°S
Kappa Bootis star hop
The sky of May 2021 - planets, stars and main astronomical events | Astrotourism.com
A Selection of Double Stars in Boötes
Kappa Boötis (Struve 1821) - Belt of Venus
Asellus Tertius (κ Boötis) | Facts, Formation, Distance, Size & Mass
NCKAS -Double Stars
The three Asellus Stars in Bootes ( Michael Kraus ) - AstroBin
Bootes | Star-Splitters
Webb Deep-Sky Society: Double Star of the Month in Bootes
κ2 Boötis (kappa2 Boötis) - Star in Boötes | TheSkyLive.com
Springtime Double Stars in Boӧtes | SkyNews
Bootes | Star-Splitters
Webb Deep-Sky Society: Double Star of the Month in Bootes
Boötes Constellation - Herdsman in the Sky | Astronomer's Guide
Springtime Double Stars in Boӧtes | SkyNews
Kappa Boötis - Wikipedia
Seeing double (and triple) in the spring sky – Astronomy Now
Webb Deep-Sky Society: Double Star of the Month in Bootes
Seeing double (and triple) in the spring sky – Astronomy Now
Astronomical League Double Star Observing Log
Double and Multiple Star Measurements in the Northern Sky with a 10” Newtonian and a Fast CCD Camera in 2006 through 2009
