Alrischa
| Doppelstern α Piscium / Alrischa | |||||||||||||||||||||||||||||||||||
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| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||||||||||||||||||||||||||||
| AladinLite | |||||||||||||||||||||||||||||||||||
| Sternbild | Fische | ||||||||||||||||||||||||||||||||||
| Scheinbare Helligkeit | 3,82 mag | ||||||||||||||||||||||||||||||||||
| Astrometrie | |||||||||||||||||||||||||||||||||||
| Radialgeschwindigkeit | (9 ± 2) km/s | ||||||||||||||||||||||||||||||||||
| Parallaxe | (23,5 ± 1,1) mas | ||||||||||||||||||||||||||||||||||
| Entfernung | (151 ± 7) Lj ((42,6 ± 1,9) pc) | ||||||||||||||||||||||||||||||||||
| Einzeldaten | |||||||||||||||||||||||||||||||||||
| Namen | A; B | ||||||||||||||||||||||||||||||||||
| Beobachtungsdaten | |||||||||||||||||||||||||||||||||||
| Scheinbare Helligkeit | A | 4,33 mag | |||||||||||||||||||||||||||||||||
| B | 5,23 mag | ||||||||||||||||||||||||||||||||||
| Spektrum und Indices | |||||||||||||||||||||||||||||||||||
| Spektralklasse | A | A0pSiSr | |||||||||||||||||||||||||||||||||
| B | A3m | ||||||||||||||||||||||||||||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||||||||||||||||||||||||||||
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Alrischa (arabisch الرِشا ar-Rischā ‚das Seil‘), auch bekannt als α Piscium (Alpha Piscium), ist ein Doppelstern im Sternbild Fische. Der Hauptstern hat eine Helligkeit von +4,33 mag und besitzt den Spektraltyp A0pSiSr, während der Begleiter eine Helligkeit von +5,23 mag hat und der Spektralklasse A3m angehört. Seine Entfernung beträgt etwa 150 Lichtjahre.
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