HD 89307
| Stern HD 89307 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AladinLite | |||||||||||
| Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0 | |||||||||||
| Sternbild | Löwe | ||||||||||
| Rektaszension | 10h 18m 21,288s [1] | ||||||||||
| Deklination | +12° 37′ 15,99″ [1] | ||||||||||
| Bekannte Exoplaneten | 1 | ||||||||||
| Helligkeiten | |||||||||||
| Scheinbare Helligkeit | 7,02 mag[1] | ||||||||||
| Spektrum und Indices | |||||||||||
| Spektralklasse | G0 V[1] | ||||||||||
| Astrometrie | |||||||||||
| Radialgeschwindigkeit | (22,9 ± 0,1) km/s[2] | ||||||||||
| Parallaxe | (30,90 ± 0,68) mas[3] | ||||||||||
| Entfernung | (105,6 ± 2,3) Lj (32,36 ± 0,71) pc [3] | ||||||||||
| Visuelle Absolute Helligkeit Mvis | +4,47 mag[Anm 1] | ||||||||||
| Eigenbewegung[3] | |||||||||||
| Rek.-Anteil: | (−272,29 ± 0,63) mas/a | ||||||||||
| Dekl.-Anteil: | (−39,91 ± 0,48) mas/a | ||||||||||
| Physikalische Eigenschaften | |||||||||||
| Masse | 1 M☉ | ||||||||||
| Radius | 1,07 R☉ | ||||||||||
| Effektive Temperatur | 5834 K | ||||||||||
| Metallizität [Fe/H] | −0,23 | ||||||||||
| Alter | ca. 9 Mia. a | ||||||||||
| Andere Bezeichnungen und Katalogeinträge | |||||||||||
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| Anmerkung | |||||||||||
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HD 89307 ist ein 107,65 Lichtjahre von der Erde entfernter Gelber Zwerg mit einer Rektaszension von 10h 18m 21s und einer Deklination von +12° 37' 15". Er besitzt eine scheinbare Helligkeit von ca. 7 mag. Im Jahre 2004 entdeckte Geoffrey Marcy einen extrasolaren Planeten, der diesen Stern umkreist. Dieser trägt den Namen HD 89307 b.
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