Cursa
L☉
| Stern Cursa (β Eridani) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||||||||||
| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||||||||||
| Sternbild | Eridanus | ||||||||||||||||
| Rektaszension | 05h 07m 50,985s [1] | ||||||||||||||||
| Deklination | −05° 05′ 11,21″ [1] | ||||||||||||||||
| Helligkeiten | |||||||||||||||||
| Scheinbare Helligkeit | 2,78 mag[1] | ||||||||||||||||
| Helligkeit (U-Band) | 3,02 mag | ||||||||||||||||
| Helligkeit (B-Band) | 2,92 mag | ||||||||||||||||
| Helligkeit (V-Band) | 2,79 mag | ||||||||||||||||
| Helligkeit (R-Band) | 2,65 mag | ||||||||||||||||
| Helligkeit (I-Band) | 2,57 mag | ||||||||||||||||
| Helligkeit (J-Band) | 2,51 mag | ||||||||||||||||
| Helligkeit (H-Band) | 2,439 mag | ||||||||||||||||
| Helligkeit (K-Band) | 2,38 mag | ||||||||||||||||
| Spektrum und Indices | |||||||||||||||||
| B−V-Farbindex | +0,13[2] | ||||||||||||||||
| U−B-Farbindex | +0,10[2] | ||||||||||||||||
| R−I-Index | +0,08[2] | ||||||||||||||||
| Spektralklasse | A3 IIIvar[1] | ||||||||||||||||
| Astrometrie | |||||||||||||||||
| Radialgeschwindigkeit | (−6,0 ± 0,8) km/s[3] | ||||||||||||||||
| Parallaxe | (36,50 ± 0,42) mas[4] | ||||||||||||||||
| Entfernung | (89,4 ± 1,0) Lj (27,40 ± 0,32) pc [4] | ||||||||||||||||
| Visuelle Absolute Helligkeit Mvis | +0,59 mag[Anm 1] | ||||||||||||||||
| Eigenbewegung[4] | |||||||||||||||||
| Rek.-Anteil: | (−82,82 ± 0,49) mas/a | ||||||||||||||||
| Dekl.-Anteil: | (−75,39 ± 0,31) mas/a | ||||||||||||||||
| Physikalische Eigenschaften | |||||||||||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||||||||||
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| Anmerkung | |||||||||||||||||
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Cursa (aus arabisch كرسي الجوزاء, DMG kursī al-ǧauzāʾ ‚Sessel [des Orion]‘) ist ein Eigenname des Sterns β Eridani (Beta Eridani). Cursa hat eine scheinbare Helligkeit von 2,8 mag und markiert das nordöstliche Ende des Sternbilds Eridanus. Der Spektraltyp von Cursa ist A3 IIIvar. Cursa ist 90 Lichtjahre von der Erde entfernt. Andere Namen: Dhalim, El Dhalim.
Die IAU Working Group on Star Names (WGSN) hat am 20. Juli 2016 den Eigennamen Cursa als standardisierten Eigennamen für diesen Stern festgelegt.[5]
Einzelnachweise
- ↑ a b c Hipparcos-Katalog (ESA 1997)
- ↑ a b c Bright Star Catalogue
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
- ↑ Bulletin of the IAU Working Group on Star Names, No. 1, July 2016. (PDF) Abgerufen am 9. November 2016 (englisch, 184 KiB).
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