How many stars make up delphinus

Guides to the night sky. Delphinus is a moderately small and faint constellation which lies close to the southern vertex of the Summer Triangle asterism, near the star Altair in Aquila. It is highest in the evening sky in the months around July. At its center is a grouping of fourth-magnitude stars, forming an asterism sometimes known as Job's Coffin because of its box-like shape.

The constellation's two brightest stars are sometimes called Rotanev and Sualocin. These strange names first appeared in the Palermo Catalogue of Together, they spell out the name Nicolaus Venator backwards, which is the Latinized form of Niccolo Cacciatore, an observing assistant.

They are the only example of stars named after a real person. Delphinus is home to a number of notable deep sky objects, including the globular cluster NGC and the planetary nebula NGC Latitude: Longitude: Timezone:. Light Night mode. The brightest star in the constellation is Rotanev with an apparent magnitude of 3. There are no Messier objects in Delphinus and no meteor showers associated with the constellation.

Delphinus is associated with two stories in Greek mythology. The first relates to the story of Poseidon and Amphitrite. Greek god Poseidon wanted to marry Amphitrite, a beautiful nereid, but Amphitrite wanted to protect her virginity and fled to the Atlas mountains. Poseidon sent out searchers to look for her, one of whom was Delphinus. As a thank you, Poseidon placed the image of a dolphin among the stars. In the second story, Delphinus was placed in the stars for saving the life of Arion.

Arion was a court musician at the palace of Periander, ruler of Corinth, who had amassed a fortune during his travels to Sicily and Italy. On his way home from a concert tour of southern Italy, other crew members on the ship started plotting to kill him and take the money he had earned. As he was threatened with death, Arion asked for one last wish which the crew granted: he wanted to sing a dirge.

Constellation Delphinus is the 69th largest constellation in size, occupying an area of square degrees.

Its right ascension is 20h 14m Delphinus is best seen at 9pm during the month of September. It lies in the region of the sky between the bright Altair in the constellation Aquila and the Great Square of Pegasus. Rotanev, also known as Beta Delphini, is the brightest star in the constellation of Delphinus and has an apparent magnitude of 3.

It is a binary star and was discovered as one in by the American astronomer S. It consists of two white stars of the spectral types F5 III and F5 IV, a giant and a subgiant, which appear as a single point of light to the naked eye. They are separated by 0.

Rotanev is located light years from Earth. Sualocin, also known as Alpha Delphini, is the second brightest star in the constellation of Delphinus and has an apparent magnitude of 3. The main pair form a spectroscopic binary star that are separated by only 0.

Alpha Delphini Aa is the primary component that is a blue-white subgiant with the stellar classification B9IV. It is thought to be around million years old, has a radius that is 3. Alpha Delphini Ab is the companion, but its properties are difficult to determine because it is much fainter and lies too close to the primary. Alpha Delphini is located light years away from Earth.

Musica, also known as 18 Delphini, is a yellow giant star with an apparent magnitude of 5. It is located around light years away from us and has a mass 2. It also has a radius 8. The name of the star is linked to the Greek myth of Arion, whose life was saved by dolphins at sea.

It orbits the star from a distance of 2. The planet itself has a mass at least Aldulfin, also known as Epsilon Delphini, is a blue-white giant of the spectral type B6III with an apparent magnitude of 4.

It is also a suspected variable star, because its brightness has been observed to vary from magnitude 3. Aldulfin, is located light years away from us. It is times more luminous than the Sun and 4. Shama, also known as HD , is an orange main sequence star of the spectral type K0V with an apparent magnitude of 9. It also has 0. Shama is around light years away from us and is invisible to the naked eye.

The nearest star to the Earth with an exoplanet is HD which is about The furthest star that is located in the constellation is TX Delphini and it is The furthest figure is derived from either the or Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.

The brightest star in Delphinus is Rotanev and is located about The star has a apparent magnitude of 3. The star is only recognised as being Beta Delphini rather than having Alpha status. The dimmest star that can be seen in Delphinus with the naked eye is HD The dim star has an apparent magnitude of 5. The dimmest star that a person is able to see with their naked eye is 6. Ref: University of Michigan.

Delphinus is the dolphin that persuaded Amphitrite, a nereid that she should accept Poseidon's wooing. Amphitrite had wanted to keep her virginity thus running off. Delphinus was one of those tasked with finding her. Another story has Delphinus as the dolphin who saved the Greek poet Arion of Lesbos from drowning after he was thrown overboard.

It can be seen in an easterly direction in June when it is still light. It will be higher in the sky was the night goes on. It does a somersault in the air before disappearing in December like in the southern hemisphere. Delphinus can be seen from about June but is fully visible from July on the horizon in an easterly direction.

It does a somsersault in the air before disappearing in December.