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Saiph

Kappa Orionis, 53 Orionis

Proper NameSaiph
Bayer DesignationKappa Orionis
Flamsteed Number53 Orionis
HR (BSC)2004
HD38771
ConstellationOrion
Right Ascension5h 47m 45s
Declination-9° 40' 11"
Distance647 light years
198 parsecs
MagnitudeApparent: +2.1
Absolute: -4.7
Spectral ClassB0 Blue Supergiant
Optimum VisibilityDecember / January

Forming the easternmost 'foot' of Orion in the night sky, Saiph is an immense and hot blue star of the supergiant type. Like many of the stars of Orion, it is distant from the Solar System, lying more than 600 light years from Earth.

HR Diagram
Miram
V2306 Ophiuchi
LV Draconis
La Superba
w Carinae
x Carinae
Mekbuda
YZ Ceti
Xi Boötis B
π Cephei
Pincoya
Polis
DO Cephei
Sharjah
Struve 2398 B
Struve 2398 A
s Velorum A
θ Hydrae
Nashira
ο1 Cygni
Petra
Kruger 60 A
Alkaphrah
β Reticuli
β Scupltoris
Cerberus
AX Microscopii
b Velorum
Berehynia
41 Draconis
a Velorum
Absolutno
Adhafera
Guniibuu
GX Andromedae
HD 37131
Nosaxa
Gakyid
ι1 Scorpii
Kapteyn's Star
Koeia
Koit
HR 5546
FL Virginis
ε Indi
Diya
Dombay
e Aquilae
Ebla
Erakis
Copernicus
Felixvarela
χ Cygni
Proxima Centauri
Wolf 359
Wolf 498
Deneb
BZ Crucis
HR 7687
δ Andromedae
α Centauri A
Rigel
π5 Orionis
15 Orionis
Ran
δ Circini
14 Persei
Lalande 18115
δ Caeli
Canopus
Polaris
Capella
BF Orionis
Betelgeuse
ρ Cygni
Rastaban
Castor B
Wezen
HO Librae
Ross 154
Sirius
ο Capricorni B
Antares
Gliese 536
WX Ursae Majoris
Acubens
ε Reticuli
σ Orionis
η Carinae
Alchiba
γ Pavonis
θ Circini
Arneb
Naos
Sirius B
Alfirk
Teegarden's Star
Suhail
ν2 Canis Majoris
Almaaz
τ Ceti
Alnilam
Alnitak
Achird
Enif
W Virginis
Saiph
Mebsuta
β Doradus
52 Orionis
van Maanen's Star
Menkar
61 Cygni A
61 Cygni B
UV Ceti
Sadr
Tarazed
Azmidi
Aspidiske
EE Leonis
Mira
Avior
Atria
Unurgunite
Mirfak
Sargas
U Sagittarii
Hatysa
Schedar
Tureis
β Pictoris
Saiph

Hertzprung-Russell diagram plotting the temperature and luminosity of Saiph (marked by the red circle) relative to other stars.

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