Emission-line stars

star in Centaurus constellation

Deneb () is a blue supergiant star in the constellation of Cygnus. It is the brightest star in the constellation and the 19th brightest in the night sky, with an apparent magnitude slightly varying between +1.21 and +1.29. Deneb is one of the vertices of the asterism known as the Summer Triangle and the "head" of the Northern Cross. Its Bayer designation is α Cygni, which is Latinised to Alpha Cygni, abbreviated to Alpha Cyg or α Cyg.

red hypergiant in the constellation Canis Major

star in the constellation Gemini

Mira, pronounced , is a binary star in the constellation Cetus. It has the Bayer designation Omicron Ceti, which is Latinized from ο Ceti, and abbreviated Omicron Cet or ο Cet. The system consists of a variable red giant (Mira A) along with a white dwarf companion (Mira B). Mira A is a pulsating variable star and was the first non-supernova variable star discovered, with the possible exception of Algol. It is the prototype of the Mira variables. The system lies at a distance of .

red supergiant star in the constellation Scutum

binary star in the constellation Cepheus

star in the constellation Cepheus

red hypergiant star in the constellation Dorado, possibly the largest well-defined star known by radius

small star in the equatorial zodiac constellation of Virgo

star in the constellation of Puppis

Meissa , designated Lambda Orionis (λ Orionis, abbreviated Lambda Ori, λ Ori) is a star in the constellation of Orion. It is a multiple star approximately away with a combined apparent magnitude of 3.33. The main components are an O9 giant star and a B-class main sequence star, separated by about 4″. Despite Meissa being more luminous and only slightly further away than Rigel, it appears 3 magnitudes dimmer at visual wavelengths, with much of its radiation emitted in the ultraviolet due to its high temperature.

star in the constellation Pegasus

variable star in the constellation Dorado

star in the constellation of Cephei

triple star system in the constellation Eridanus

variable star in constellation Taurus

binary system in the constellation Lepus

variable star in the Large Magellanic Cloud

star in the constellation Cetus

five-star system in the constellation Orion

star in the constellation Camelopardalis

star in the constellation Ursa Major

star in the constellation Carina

star in the constellation Cygnus

variable star in the constellation Lepus

binary star system near the border of the northern constellation of Andromeda

variable star in the constellation Orion

red supergiant

star in the constellation Dorado

contact binary star system

star in the constellation Camelopardalis

star in the constellation Perseus

star

variable star in the constellation Cepheus

star

variable star in the constellation Leo

star in the constellation Dorado

variable star in the constellation Aquarius

variable star in the constellation Gemini

star in the constellation Leo

variable star in the constellation Cassiopeia

giant star in the constellation of Puppis and is located between the bright stars Canopus and Sirius

star in the constellation Aquarius

variable star in the constellation Perseus

variable star in the constellation Andromeda

variable star in the constellation Hydra

Star in the constellation Draco

star in the constellation Cepheus

variable star in the constellation Sagitta

star in the constellation

star in the constellation Carina

star in the constellation Circinus

star in the constellation Aquarius

star

variable star in the constellation Monoceros

variable star in the constellation Aquila

star in the constellation Lepus

star in the constellation Tucana

variable star in the constellation Centaurus