yes 3 but many others are not major, I'm sorry i don't know the names.
Sextans A is a dwarf galaxy in our local cluster (outside the milky way and indeed the member of the cluster furthest away form us). As a galaxy it contains millions of stars and you can not easily identify the major stars in it. However I do note that there appears to be a bright (orange colored) star in Sextans A. This star is a member of our galaxy and is not in Sextans A. I am afraid I do not know the designation/name of this star, but one could look it up on star charts.
Not really, but depends on what you classify as major. There are no well known stars in the constellation. See related link for a full list of stars in Aries.
Never Ever
They are meteors in the meteor showers associated with the constellation "Sextans".
There are 12 winter constellations. They are: Cancer, Canis Major, Canis Minor, Crater, Gemini, Hydra, Leo, Leo Minor, Lynx, Monoceros, Orion, and Sextans
The constellations next to Leo the Lion are Cancer, Virgo, Hydra, and Sextans. Cancer is located to the west of Leo, Virgo to the east, Hydra to the south, and Sextans to the southwest.
Sextans is a southern constellation that represents a sextant, a navigational instrument used in astronomy to measure angles between celestial objects. It is one of the 88 modern constellations and was introduced by Polish astronomer Johannes Hevelius in the 17th century. Sextans is not particularly prominent in the night sky, and its brightest star is Alpha Sextantis.
Some major stars in the constellation of Cancer include Al Tarf (Beta Cancri), Acubens (Alpha Cancri), and Asellus Australis (Delta Cancri). These stars are mostly binary or multiple star systems, with varying spectral types such as K-type and F-type stars.
The COSMOS 1526561 galaxy (one of the galaxies in the COSMOS survey) is a spiral galaxy 7500 million light-years from Earth in the Sextans constellation, and is 100,000 light-years in diameter, and contains about 100 billion stars.
The COSMOS 2607238 galaxy (one of the galaxies in the COSMOS survey) is a barred spiral galaxy 6300 million light-years from Earth in the Sextans constellation, and is 100,000 light-years in diameter, and contains about 100 billion stars.
No, they are all stars. Planets do not "make" any constellations but they may be present around a constellation's stars. Also, the big dipper is not a constellation. It's an asterism. It's part of the constellation Ursa Major.
The COSMOS 397553 galaxy (one of the galaxies in the COSMOS survey) is a barred spiral galaxy 6000 million light-years (redshift of 0.66) from Earth in the Sextans constellation, and is 100,000 light-years in diameter (same size as the Milky Way), and contains about 100 billion stars (same number of stars as the Milky Way).