Edasich
L☉
| Stern Edasich (ι Draconis) | |||||||||||||||||||||
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| Künstlerische Darstellung des Roten Riesen mit seinem Exoplaneten | |||||||||||||||||||||
| AladinLite | |||||||||||||||||||||
| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||||||||||||||
| Sternbild | Drache | ||||||||||||||||||||
| Rektaszension | 15h 24m 55,775s [1] | ||||||||||||||||||||
| Deklination | +58° 57′ 57,84″ [1] | ||||||||||||||||||||
| Bekannte Exoplaneten | 1 | ||||||||||||||||||||
| Helligkeiten | |||||||||||||||||||||
| Scheinbare Helligkeit | 3,29 mag[1] | ||||||||||||||||||||
| Spektrum und Indices | |||||||||||||||||||||
| B−V-Farbindex | +1,16[2] | ||||||||||||||||||||
| U−B-Farbindex | +1,22[2] | ||||||||||||||||||||
| R−I-Index | +0,60[2] | ||||||||||||||||||||
| Spektralklasse | K2 III[1] | ||||||||||||||||||||
| Astrometrie | |||||||||||||||||||||
| Radialgeschwindigkeit | (−10,7 ± 0,3) km/s[3] | ||||||||||||||||||||
| Parallaxe | (32,23 ± 0,10) mas[4] | ||||||||||||||||||||
| Entfernung | (101,20 ± 0,31) Lj (31,027 ± 0,096) pc [4] | ||||||||||||||||||||
| Visuelle Absolute Helligkeit Mvis | +0,83 mag[Anm 1] | ||||||||||||||||||||
| Eigenbewegung[4] | |||||||||||||||||||||
| Rek.-Anteil: | (−8,36 ± 0,08) mas/a | ||||||||||||||||||||
| Dekl.-Anteil: | (17,08 ± 0,10) mas/a | ||||||||||||||||||||
| Physikalische Eigenschaften | |||||||||||||||||||||
| Masse | (1,05) M☉[5] | ||||||||||||||||||||
| Effektive Temperatur | (4530 ± 100) K[5] | ||||||||||||||||||||
| Metallizität [Fe/H] | (0,29 ± 0,20)[5] | ||||||||||||||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||||||||||||||
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| Anmerkung | |||||||||||||||||||||
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Edasich („Hyäne“) ist der Eigenname des Sternes ι Draconis (Iota Draconis). Iota Draconis ist ein Riese der Spektralklasse K2 und besitzt eine scheinbare Helligkeit von 3,31 mag. Er ist etwa 100 Lichtjahre entfernt und wird von mindestens einem Exoplaneten umkreist, der 2001 entdeckt wurde und 2015 von der IAU den offiziellen Namen Hypatia erhielt.
Weblinks
Commons: Iota Draconis – Sammlung von Bildern, Videos und Audiodateien
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)
- ↑ a b c iot Dra. NASA Exoplanet Archive, abgerufen am 7. März 2020.
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