HAT-P-7

Stern
HAT-P-7
HAT-P-7
{{{Kartentext}}}
AladinLite
Beobachtungsdaten
Äquinoktium: J2000.0, Epoche: J2000.0
Sternbild Schwan
Rektaszension 19h 28m 59s
Deklination +47° 58′ 10″
Winkelausdehnung {{{Winkel}}} mas
Bekannte Exoplaneten 1
Helligkeiten
Scheinbare Helligkeit 10,5 mag
Helligkeit (U-Band) {{{magU}}} mag
Helligkeit (B-Band) {{{magB}}} mag
Helligkeit (V-Band) {{{magV}}} mag
Helligkeit (R-Band) {{{magR}}} mag
Helligkeit (I-Band) {{{magI}}} mag
Helligkeit (J-Band) {{{magJ}}} mag
Helligkeit (H-Band) {{{magH}}} mag
Helligkeit (K-Band)  mag
G-Band-Magnitude  mag
Spektrum und Indices
Veränderlicher Sterntyp
B−V-Farbindex
U−B-Farbindex
R−I-Index {{{R-I-Index}}}
Spektralklasse F8
Astrometrie
Radialgeschwindigkeit  km/s
Parallaxe {{{Parallaxe}}} mas
Entfernung 1000 Lj
300 pc
Visuelle Absolute Helligkeit Mvis {{{Absolut−vis}}} mag
Bolometrische Absolute Helligkeit Mbol {{{Absolut-bol}}} mag
Eigenbewegung
Rek.-Anteil: −13 mas/a
Dekl.-Anteil: +13 mas/a
Physikalische Eigenschaften
Masse 1,09 M☉
Radius 1,47 R☉
Leuchtkraft

 L☉

Effektive Temperatur 6350 K
Metallizität [Fe/H] +0,26
Rotationsdauer
Alter  a
Andere Bezeichnungen und Katalogeinträge
Bonner DurchmusterungBD +47° 2846
Tycho-KatalogTYC 3547-1402-1[1]Vorlage:Infobox Stern/Wartung/AngabeTYC-Katalog
Weitere Bezeichnungen GSC 03547-01402 • Kepler-2 • 2MASS J19285935+4758102
Anmerkung
{{{Anmerkung}}}

HAT-P-7 ist ein etwa 1000 Lichtjahre von der Erde entfernter Hauptreihenstern der Spektralklasse F8 mit einer scheinbaren Helligkeit von 10,5 mag. Im Jahr 2008 wurde im Rahmen des HATNet-Projektes die Entdeckung eines Exoplaneten um diesen Stern bekannt gegeben: HAT-P-7b.

Helligkeitskurven des Sterns gemessen vom Weltraumteleskop Kepler. Der ihn umkreisende Planet verursacht periodische Helligkeitseinbrüche durch Transit und Bedeckung durch den Stern.

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