Riding Pegasus, he tried to fly to Olympus and join the gods. He fell off the horse and back to Earth. Pegasus did however make it to Olympus. There, Zeus used the horse to carry his thunder and lightning, and eventually placed him among the constellations.
The constellation Pegasus is depicted with only the top half of the horse, and it is nevertheless one of the largest constellations in the sky, seventh in size. The Great Square of Pegasus represents the main body of Pegasus. The name Delta Pegasi has long been retired and the star is now known only as Alpha Andromedae , or by its proper name, Alpheratz.
It has an apparent magnitude of 2. It is only the third brightest star in Pegasus. It has a radius almost five times that of the Sun. Beta Pegasi is the second brightest star in the constellation. It has the stellar classification M2.
It is about times more luminous than the Sun. Beta Pegasi has an apparent magnitude of 2. It is classified as a semi-regular variable star with a period of Its brightness ranges from magnitude 2.
The star is losing mass and as a result it has a shell of gas and dust that is expanding with a radius of about times that of the Sun. Algenib is a subgiant star of the spectral type B2 IV. It has a visual magnitude of 2. It marks the lower left-hand corner of the Great Square of Pegasus. It has a radial pulsation period of 0. Algenib is almost nine times as massive as the Sun and has about five times the solar radius. It is times more luminous than the Sun. Epsilon Pegasi is the brightest star in Pegasus.
Enif belongs to the spectral class K2 Ib. This means that it is an orange supergiant. Epsilon Pegasi is classified as a LC type slow irregular variable. It varies from 0. The star is also notable for having a relatively high peculiar velocity true velocity of Zeta Pegasi is a main sequence star of the spectral type B8 V. It has an apparent magnitude of 3. It has four times the solar radius.
The star is classified as a slowly pulsating B star with slight variations in luminosity. It has a period of It has two visual companions, a magnitude Eta Pegasi is a double star approximately light years distant from the solar system. It is composed of two stars that orbit each other with a period of days.
The brighter component in the system is a bright giant of the spectral type G2 II, four times more massive and times more luminous than the Sun. The companion is a main sequence star belonging to the spectral class F0 V. Theta Pegasi belongs to the spectral class A2 Vp and is about 67 light years distant from Earth. It has a visual magnitude of 3. It is 25 times more luminous than the Sun and has 2. It has a radius almost ten times solar, but is only slightly more massive than the Sun, about 2.
It belongs to the spectral class G5V and has an apparent magnitude of 5. It is also older than the Sun, with an estimated age between 6. The exoplanet, 51 Pegasi b, was discovered on October 6, It has at least half the mass of Jupiter. The planet was nicknamed Bellerophon. NGC mag 9. Scheat mag 2. NGC NGC mag Markab mag 2. Algenib mag 2.
IC Matar mag 2. Homam mag 3. Sadalbari mag 3. Biham mag 3. NGC 16 mag O-Peg mag 4. Notable objects include the densely-packed stars of globular cluster M15, a great first target. A fascinating but extremely difficult to observe object is a gravitationally-lensed quasar famously known as the Einstein Cross.
Pegasus has quite a storied history in the field of exoplanet research: 51 Pegasi was the first Sun-like star discovered to be host to a planet outside our solar system, now officially named Dimidiam. While observing Pegasus and its surroundings, keep your eyes relaxed and ready to catch some Perseids, too! August promises an excellent showing of this annual meteor shower. Giant planets Jupiter and Saturn will be up all evening as well. Look south - they easily stand out as the brightest objects in the faint constellations Aquarius and Capricornus.
Pegasus truly holds some fantastic astronomical treasures! Last Updated: July 16, Follow us on Facebook , Twitter and Instagram for the latest NSN news and outreach photos, and subscribe to our YouTube channel for recordings of monthly astronomy webinars and archives of our outreach toolkit demonstration videos.
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