ori.gif (1448 bytes)

P E G A S U S

 

ori.gif (1448 bytes) Mythology and history

Mitología de Pegasus

            The Pegaso or Pegasus in Greek mythology was the winged horse, son of Poseidón, God of the sea, and gorgona Medusa. The Pegaso was born of the neck of Medusa after being overcome and being died by the Perseo hero. Shortly after his birth, the magician corcel struck with a kick the ground of the Helicón mount and in the act he began to flow a spring, later consecrated to the Musas and that, according to is created, is the source of the poetic inspiration. All in vain tried to capture and to tame the horse, and to obtain it became the obsession of Belerofonte, prince of Corinto. Following the advice of a fortune teller, Belerofonte spent one night in the temple of the Athenian goddess. While it slept, it appeared to him the goddess with a bridle of gold and it said to him that this one would allow him to capture the Pegaso. When it woke up, it found the gold bridle next to him, and with her could easily capture and tame the winged horse.

           As of that moment, the Pegaso became a great aid for the hero and it accompanied in his adventures against the amazons and the Chimera. Belerofonte, nevertheless, was victim of its own pride. When it managed to fly until the top of the Mount Olympus mount to meet with the Gods, the prudent horse demolished and left it to Belerofonte quarter-railings without course, heartbroken, rejected by the inmortales. The Pegaso found refuge in the Olympic stables and Zeus ordered to him that he took to the thunderclap and the ray to him, the symbols of his power.

 

ori.gif (1448 bytes) Characteristics

          Pegasus is a precious and enormous square boreal constellation of more of 900º located between the parallels 30º and 10º of visible North latitude for more than seven months in the North hemisphere from the months of Julio to January; however, in the South hemisphere it culminates to low height during the months of February, March and April. The one of the most evident characteristics when observing constellation is that it has quadrilateral form whose asterism already very popular, is formed peculiarly by four stars of the second magnitude but with the particularitity of which the one that is in the western and  superior end it belongs to the neighboring constellation of Andromeda, the rest, logically comprises of the constellation of Pegasus. It turns out fascinating to observe the constellation in nights very closed and to be able to get to at first detect with the eyes some weak stars within the asterism.

            The constellation of Pegasus is enough free of the stellar clouds and dust that project in the Milky Route for that reason we pruned to observe globular clusters and galaxies with certain facility. it's 40º to the south of the equator of our galaxy, compares her, and to the north of the ecliptic, also it compares limiting the south with the zodiacal constellations of aquarium and fish (Aquarius and Piscis).

        Pegasus limits the north with the constellations of Andromeda and Lacerta (the lizard), to the east with Cygnus, Vulpecula (the vixen), Equuelus (the pony) and Delphinus; to the south with the zodiacal constellations of Aquarius and Piscis and to the west with Piscis and the wonderful Andromeda.

        The constellation of Pegasus I located the 4 to it of Julio of 1982 at the age of 14 years from the locality of Cán Picafort, Majorca, Spain.

 

Constelación de Pegasus

 

Main stars

       Alpha, a; denominated Markab, of magnitude 2.49 and white color, one is in the Southeastern end of the quadrilateral. it's of us 140 years Earth light and is a giant 150 times more luminous than our Sun.

      Beta, b; denominated Scheat, or "forcebody" of magnitude 2.47, one is in the Eastern North end of the quadrilateral, it's 200 years Earth light and one is a red giant 350 times more luminous than the Sun similar to Betelgeuse in brightness variations.

    Gamma, g; located to the southwest of the quadrilateral, its magnitude is of 2.84, is a blue giant 640 times more luminous than the Sun, denominated Algenib, it's 330 years light of us.

    Delta, d; one is the Eastern North star of the quadrilateral that belongs to the constellation of denominated a Andromedae.

    Epsilon, e; of magnitude 2.39, it is the star most shining of the constellation of Pegasus and peculiarly it is not located in the famous quadrilateral but in the Eastern end of the constellation already near Equuleus, it comes to be the snout of the winged horse. Denominated Enif of the Arab nose, it is an orange supergiant 4000 times more shining than the Sun that it's 670 years light of us.

Other objects

          M 15; wonderful and impressive globular cluster of magnitude 6,4; it has an angular diameter of 7' of arc and it's of us 30,000 years light; it has a diameter of 150 years light.     

 

ori.gif (1448 bytes) Observations by telescope

D O U B L E

Nom: e R.A.: 21h.42m.

Dec: 09º39'

Mag: 2.5,8.5 Sep.: 144" P.A.: 318º Nat: op Spec.: K, ?
AOC: 21 DSC: 16 D.D.S.: 00-Sep.-1983

epsilon

 

            NOTE: One is in a partially rich zone. There is a remarkable difference of brightness, are very separated, the main one is orange, however, secondary the profit not to identify its color, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: i R.A.: 21h.19m.

Dec: 19º34'

Mag: 4.3,8.9 Sep.: 36" P.A.: 312º Nat: ? Spec.: K, B
AOC: 22 DSC: 17 D.D.S.: 00-Sep.-1983 (prisma)

iota

 

            NOTE: One is in a partially rich zone. There is a remarkable difference of brilo, are slightly separated, although not much, the main one is orange, however, the secondary one is bluish. It is unfolded with the eyeglass of 50x.

 

GLOBULAR CLUSTER

NGC:7078

M:15

R.A.: 21h.28m.

Dec: 11º57'

Mag: 6.8 Dim: 6' AOC: 23 CNAC: 6
D.D.S.: 00-Sep.-1983  

m15

 

            NOTE: One is in a partially rich zone. It is a very pretty globular cluster, perfectly distinguishes three layers corresponding to the very white nucleus, the less dense crown and finally the periphery, is something gradient, its form is spherical. In very dark nights it is possible to observe stars of those worlds.

 

D O U B L E

Nom: S 2991 R.A.: 23h.11m.

Dec: 10º47'

Mag: 6.0,9.3 Sep.: 34" P.A.: 359º Nat: ? Spec.: K, A?
AOC: 209 DSC: 144 D.D.S.: 19h.00m.(UT); 27-Sep.-1984

sigma2991

 

            NOTE: One is one very separated and very unequal double. The secondary one is very weak and its color is impossible to distinguish, I create supposition that is white; one is in a rich zone, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 3044 R.A.: 23h.50m.

Dec: 11º39'

Mag: 7.0,7.8 Sep.: 20" P.A.: 282º Nat: f Spec.: A, A
AOC: 212 DSC: 147 D.D.S.: 19h.03m.(UT); 28-Sep.-1984

sigma3044

 

            NOTE: One is in a rich zone. One is one pretty and luminous double of white components and to little distance. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 3041 R.A.: 23h.45m.

Dec: 16º46'

Mag: 8.0, 8.6, 8.6 Sep.(AB): 60"

Sep.(AC): 3.2"

P.A.(AB): 352º

P.A.(AC): 356º

Nat(AB): op

Nat(AC): ph

Spec.: A, B, A
AOC: 213 DSC: 148 D.D.S.: 19h.09m.(UT); 28-Sep.-1984

sigma3041

 

            NOTE: One is a triple of somewhat separated components in his third, and of similar color and brightness; component AB is unfolded with 50x; however, component AC is unfolded with the eyeglass of 100x.

 

D O U B L E

Nom: S 3012 R.A.: 23h.25m.

Dec: 16º21'

Mag: 8.0, 8.7 Sep.: 52" P.A.: 245º Nat:? Spec.:A,B
AOC: 214 DSC: 149 D.D.S.: 19h.15m.(UT); 28-Sep.-1984

sigma3012

 

            NOTE: One is in a partially rich zone; one is one double very separated, and about seemed colors, with a slight difference of brightness between the components, forming one double of weak components.

 

D O U B L E

Nom: OS 245 R.A.: 23h.23m.

Dec: 27º25'

Mag: 7.8, 8.5 Sep.: 63" P.A.: 194º Nat: op? Spec.: A, B
AOC: 215 DSC: 150 D.D.S.: 19h.18m.(UT); 28-Sep.-1984

osigma245

           

            NOTE: One is in a rich zone; they are something separated is unfolded without difficulty with the eyeglass of 50x. is one pretty double.

 

D O U B L E

Nom: S 2841 R.A.: 21h.52m.

Dec: 19º29'

Mag: 6.5,8.6 Sep.: 22" P.A.: 110º Nat: ? Spec.: K, A
AOC: 486 DSC: 348 D.D.S.: 18h.31m.(UT); 4-Jan.-1986

D O U B L E

Nom: A11 R.A.: 21h.53m.

Dec: 19º33'

Mag: 9.3, 9.5 Sep.: 18" P.A.: 202º Nat: ? Spec.: B, A
AOC: 487 DSC: 349 D.D.S.: 18h.34m.(UT); 4-Jan.-1986

sigma2841 & A11

 

            NOTE: S 2841: One is in a very rich zone; there is a remarkable difference of brightness; the main one is orange, however, the secondary one is white. It is unfolded without difficulty with the eyeglass of 50x.

            A11: One is to 10' to the northeast of S 2841. This formed by weak components, not very separated and of colors of difficult identification, although I create to suppose main the blue one and to the secondary white. It is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: PB R.A.: 23h.09m.

Dec: 26º36'

Mag: 6.5,9.7 Sep.: 24" P.A.: 296º Nat: op Spec.: B, A
AOC: 488 DSC: 350 D.D.S.: 20h.01m.(UT); 4-Jan.-1986

PB

    

       NOTE: One is in a partially rich zone; there is a remarkable difference of brightness between the components, the main one I see it blue, however, the secondary one I create supposition that is white. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 2978 R.A.: 23h.05m.

Dec: 32º33'

Mag: 6.2, 7.8 Sep.: 8.3" P.A.: 142º Nat: f Spec.: B, A
AOC: 489 DSC: 351 D.D.S.: 20h.11m.(UT); 4-Jan.-1986

sigma2978

 

            NOTE: One is in a partially rich zone. A slight difference of brightness between the components exists, the main one is blue, however, the secondary one is white, is one very pretty double; it is unfolded with the eyeglass of 50x.

 

ori.gif (1448 bytes) Other constellations

               Next in the following window you can select the constellation that you want to locate, to observe and to discover following with the thematic one of the Web of Masm.

Masm © Last update 2004-11-07)