|Right ascension||21 h 08 m 43 s to 00 h 14 m 58 s|
|declination||+ 2 ° 19 ′ 32 ″ to + 36 ° 36 ′ 25 ″|
|Completely visible||90 ° N to 53.6 ° S|
|Observation time for Central Europe||autumn|
|Number of stars brighter than 3 mag||5|
|Brightest star (size)||Enif (2.39)|
clockwise from north )
The constellation of Pegasus as seen with the naked eye
Pegasus is an expansive constellation in the autumn sky that is said to represent an upside-down flying horse. The stars γ, α, β and Sirrah form its body - where Sirrah actually belongs to Andromeda . The stars ζ, θ and ε shape the head and neck of the horse. These stars lead to the globular cluster M 15 .
Helvetios (51 Pegasi) was the first main sequence star (after our sun ) in which a planetary system was detected. Using the radial velocity method , the exoplanet Dimidium (51 Pegasi b) was discovered in 1995 , which has about half the mass of Jupiter .
The winged horse escaped and was later captured by Bellerophon , who had numerous adventures with him. But when Bellerophon wanted to soar to the gods, he incurred the wrath of Zeus . Zeus sent out a horsefly that stung Pegasus. The horse shied and threw off Bellerophon, who landed roughly on the ground. Pegasus flew on to Olympus and since then has been carrying the lightning bolts of Zeus.
|B.||F.||Names or other designations||size||Lj||Spectral class|
|ε||8th||Enif||2.39 m||673||K2 Ib|
|β||53||Scheat||2.4 to 3.0 m||199||M222 II-III|
|α||54||Markab , Menkib||2.49 m||140||B9.5 III|
|γ||88||Algenib||2.80 to 2.86 m||333||B2 IV|
|η||44||Matar||2.93 m||215||G2 II-III|
|ζ||42||Homam||3.41 m||209||B8.5 V|
|μ||48||Sadalbari||3.51 m||117||M2 III|
|ι||24||3.77 m||38||F5 V|
|λ||47||3.97 m||395||G8 II-III|
|1||4.08 m||154||K1 III|
|κ||10||Jih||4.14 m||115||F5 IV|
|ξ||46||4.20 m||53||F7 V|
|χ||89||4.20 m||53||F7 V|
|π 2||29||4.28 m||252||F5 III|
|9||4.43 m||901||G5 Ib|
|2||4.52 m||443||M1 III|
|55||4.54 m||322||M2 III|
|7th||4.54 m||178||G8 III|
|τ||62||Salm , curb||4.6 m||about 160||A5 IV|
|ψ||84||4.63 m||433||M3 III|
|56||4.76 m||537||K0 Iip|
|35||4.78 m||160||K0 III|
|32||4.78 m||607||B9 III|
|ο||43||4.80 m||305||A1 IV|
|31||4.82 m||971||B2 IV-V|
|ν||22nd||4.86 m||263||K4 III|
|78||4.93 m||235||K0 III|
|72||4.97 m||548||K4 III|
|57||GZ Pegasi||5.05 m||762||M4 IIIs +|
|φ||81||5.06 m||437||M2 III|
|14th||5.07 m||303||A1 Vs|
|77||5.09 m||818||M2 III|
|16||5.09 m||512||B3 V|
|66||5.09 m||330||K3 III|
|59||5.15 m||253||A5 Vn|
|12||5.29 m||1129||K0 Ib|
|7th||5.30 m||522||M2 III|
|82||HT||5.30 m||188||A4 Vn|
|71||HW||5.33 m||575||M5 IIIa|
|MR||5.34 m||256||K2 III|
|13||5.34 m||109||F2 III-IV|
|64||5.35 m||834||B6 III|
|30th||5.37 m||919||B5 IV|
|58||5.39 m||619||B9 III|
|5||5.46 m||321||F1 IV|
|75||KS Pegasi||5.49 m||239||A1 Vn|
|51||Helvetios||5.49 m||50.1||G5 V|
|α||2.5 / 7.8 / 11 m||138/82 "|
|1||4.2 / 9.3 m||36 "|
|37||5.8 / 7.1 m||0.6 "|
|72||5.7 / 5.8 m||0.5 "|
ε Pegasi is a triple star system 673 light years away. The main star is extremely luminous and has 11 times the mass and 175 times the diameter of our sun . In 1972 the star showed an outbreak of brightness, whereby it became strikingly bright at 0.70 m . At a distance of 138 arcseconds there is a 7.8 m bright companion star that is already visible in the prism binoculars . A telescope is required to observe the third component .
The Arabic name Enif is derived from "Maul" (the horse).
|β pegasi||2.31 to 2.74||43.3 days||Semi-regular variable star|
|γ pegasi||2.82 to 2.86||0.1518 days (3.64 hours)||Beta Cephei star|
|LL Pegasi||9.64 to 11.6 (K)||696 days||Mira star|
β Pegasi is a variable star 199 light years away. It is a red giant 200 times the diameter of the sun. Its brightness fluctuates between 2.4 and 3.0 m at irregular intervals .
The Arabic name Scheat means "front leg" (of the horse).
γ Pegasi is a pulsation-variable star of the Beta-Cephei type, 333 light-years away . Its brightness changes slightly over a period of 3 hours and 47 minutes.
The Arabic name Algenib means "flank" (of the horse).
|NGC 7331 and Stephan's Quintet photographed through a 20 cm amateur telescope.|
|15th||7078||6.0 m||Globular clusters|
The globular cluster M 15 is about 30,000 light years away. In the binoculars it appears as a misty spot. With a telescope with an opening of 15 cm or more, the star cluster can be broken down into individual stars.
The galaxies NGC 7317 , NGC 7318A , NGC 7318B , NGC 7319, and NGC 7320 form a group called Stephan's Quintet . Due to their distance of about 380 million light years, the galaxies have a low brightness. A telescope with an opening of 20 cm or more is required to observe them.