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Algol (Stär) Kuckt och Navigatiounsmenü

StärenVerännerlech StärenStären 2. GréisstHaaptreiestärenAstronomesch Objeten déi zanter der Antiquitéit bekannt sinn


verännerleche StärPerseusLiichtjoervisuell MagnitudeMéifachstäresystemZentralstärNiewestärLiichtbouAlgolstärenBedeckungsverännerlechenGeminiano MontanariJohn Goodricke10. JoerhonnertPtolemäuslatäingriichescher SooPerseusMedusaGorgonenEquinoxe2000Saturn 01.svg












Algol (Stär)




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Algol
β Persei
Stärebild:
Perseus (Per)

Daten (Equinoxe J2000.0)
Rektaszensioun03h 08m 10.1s
Deklinatioun+ 40° 57' 20"
Visuell Magnitude+ 2,12 mag
Spektralklass:B8 V / K2 IV / A5 V
Verännerleche StärentypEA

Astrometrie
Radialvitess:+ 4,0 ± 0,9 km/s
Parallax35,13 ± 0,90 mas
Distanz93 ± 2 Lj
Absolut Hellegkeet- 0,15 mag

Physikalesch Eegenschaften
Mass:3,59 M☉ / 0,79 M☉ / 1,67 M☉
Radius:2,3 R☉ / 3,0 R☉ / 0,9 R☉
Liichtkraaft:98 L☉ / 3,4 L☉ / 4,1 L☉
Uewerflächentemperatur2800 K

Aner Bezeechnungen
ADSADS 2362
Bayer-Bezeechnungβ Persei
Bonner DuerchmusterungBD +40°673
Bright Star CatalogueHR 936
Henry-Draper-KatalogHD 19356
Hipparcos-KatalogHIP 14576
SAO-KatalogSAO 38592
Tycho-KatalogTYC 2851-2168-1



Den Algol am Stärebild Perseus


Den Algol (arabesch) ass ee verännerleche Stär an den zweethellste Stär (beta) am Stärebild vum Perseus (β Persei). Hien ass op enger Distanz vun zirka 93 Liichtjoer.


Déi visuell Magnitude vum Stär wiesselt iwwer en Zäitraum vun 2 Deeg, 20 Stonnen, 48 Minutten a 56 Sekonnen tëscht 2,3m an 3,5m.


Streng geholl handelt et sech net ëm en eenzele Stär, mä ëm ee Méifachstäresystem. Een Zentralstär mat der honnertfacher Hellegkeet vun eiser Sonn gëtt ëmkreest vun engem klengen Niewestär. Ëm dee System kreest nees e weidere Stär. De Wiessel vun der visueller Hellegkeet entsteet, wann de liichtschwaachen Niewestär den Zentralstär verdeckt. No der Charakteristik vum Liichtbou vum Algol hunn d'Algolstären hiren Numm, eng Klass vu Bedeckungsverännerlechen.


D'Hellegkeetsännerunge goufe scho 1669 vum Geminiano Montanari entdeckt. D'Period ass awer eréischt vum John Goodricke am Joer 1783 bestëmmt ginn. Deen interpretéiert d'Hellegkeetsvariatioun, richteg, als Bedeckung vum Haaptstär duerch e Begleeder.


Den Numm Algol ass en ursprénglechen arabeschen Numm a gëtt zanter dem 10. Joerhonnert benotzt. Et ass ee vun den eelsten arabesche Stärennimm an der westlecher Welt. Virdrun ass de Stär och nach vum Ptolemäus Gorgonea Prima (latäin fir „éischte Stär vum Gorgo“) genannt ginn, no enger griichescher Soo, an där de Perseus den erofgeschloene Kapp vun der Medusa, enger vun den dräi Gorgonen, an den Hänn hält.


Koordinaten (Equinoxe 2000)



  • Rektaszensioun: 3h08m10.10s


  • Deklinatioun: +40°57'20.0"


Kuckt och


Saturn 01.svgPortal Astronomie



  • ABC vun de Stären

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