OK... I'll try and be telepathic here!
You've left a term out - 'Canis Majoris' can only mean something if the name of a star (or other object) comes before it - so 'alpha Canis Majoris' is Sirius for example. 'Canis Majoris' is just latin for 'of Canis Major'.
Now... you're asking about large things in Canis Major so I assume you mean VY Canis Majoris, reputedly the largest single star known.
Off the top of my head I don't have an exact figure, but if you just Google for "VY Canis Majoris" or "VY CMa" I'm sure you'll find something. CMa by the way is just the accepted abbreviation for Canis Major. Astronomers use these abbreviations all the time, so you have things like "R Leo" for R Leonis, "zeta UMa" for zeta Ursae Majoris, and so on.
VY Cma is not only physically large, but massive as well - that is, it contains a lot of material. More often than not, very large stars are made up of very rarefied gases so they don't "weigh" very much, rather like thinking of a huge hot-air balloon.
The constellation of Canis Major is located in the southern celestial hemisphere. This constellation was discovered in the 2nd century.
There are exactly 9 stars in Canis Major including Sirius, Canis Majors point star.
4,800
stars
sirius
Canis Major
The brightest star (the star with the greatest apparent magnitude) in the sky, next to the Sun of course, is Sirius, also called Alpha Canis Majoris. In other words, it is located in the Canis Major constellation.
The brightest star (the star with the greatest apparent magnitude) in the sky, next to the Sun of course, is Sirius, also called Alpha Canis Majoris. In other words, it is located in the Canis Major constellation.
VY Canis Majoris is kinda beside Wezen(Delta Canis Majoris.) Find where it says VY
No one discovered the constellation Canis Major. It has been visible in the night sky since anything looked skywards.
None. The only two galactic object in the constellation are:- * M41 is an open cluster * NGC 2362 is an open cluster
Canis major is a constellation not a single star
Canis Major
VY Canis Majoris belongs in the constellation Canis Major
Sirius = Alpha Canis Majoris. In other words, it is the brightest star in the constellation Canis Major, or Big Dog.
Canis Major is a constellation, therefore there is no centre.
canis major
Canis Major
The brightest star (the star with the greatest apparent magnitude) in the sky, next to the Sun of course, is Sirius, also called Alpha Canis Majoris. In other words, it is located in the Canis Major constellation.
The brightest star (the star with the greatest apparent magnitude) in the sky, next to the Sun of course, is Sirius, also called Alpha Canis Majoris. In other words, it is located in the Canis Major constellation.
Canis Major.
vy canis majoris in the constellation canis major