HD 76700

Stern
HD 76700
HD 76700
{{{Kartentext}}}
AladinLite
Beobachtungsdaten
ÄquinoktiumJ2000.0, Epoche: J2000.0
Sternbild Fliegender Fisch
Rektaszension 08h 53m 55,515s [1]
Deklination −66° 48′ 03,57″ [1]
Winkelausdehnung {{{Winkel}}} mas
Bekannte Exoplaneten 1
Helligkeiten
Scheinbare Helligkeit 8,16 mag[1]
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
Spektralklasse G8 V[1]
Astrometrie
Radialgeschwindigkeit (+38,0 ± 0,3) km/s[2]
Parallaxe (16,59 ± 0,56) mas[3]
Entfernung (196,6 ± 6,6) Lj
(60,3 ± 2,0) pc [3]
Visuelle Absolute Helligkeit Mvis  mag
Bolometrische Absolute Helligkeit Mbol {{{Absolut-bol}}} mag
Eigenbewegung[3]
Rek.-Anteil: (−282,73 ± 0,71) mas/a
Dekl.-Anteil: (+119,94 ± 0,61) mas/a
Physikalische Eigenschaften
Masse M
Radius 1,33 R
Leuchtkraft

 L

Effektive Temperatur 5458 K
Metallizität [Fe/H] 0,14
Rotationsdauer
Alter ca. 4,5 Mia. a
Andere Bezeichnungen und Katalogeinträge
Córdoba-DurchmusterungCD −66° 938
Henry-Draper-KatalogHD 76700 [1]
Hipparcos-KatalogHIP 43686 [2]
SAO-KatalogSAO 250370 [3]
Anmerkung
{{{Anmerkung}}}

HD 76700 ist ein knapp 200 Lichtjahre von der Erde entfernter Gelber Zwerg im Sternbild Volans. Seine scheinbare Helligkeit beträgt 8,2 mag.

Im Jahre 2002 publizierten Butler et al. die Entdeckung eines extrasolaren Planeten um diesen Stern mit Hilfe der Radialgeschwindigkeitsmethode. Der Begleiter trägt die systematische Bezeichnung HD 76700 b und ist ein Hot Jupiter. Die Umlaufperiode des Begleiters beträgt 3,971 Tage, seine Bahn hat eine große Halbachse von ca. 0,05 Astronomischen Einheiten bei einer Exzentrizität von 0,1. Die Mindestmasse des Objekts beträgt etwa 0,2 Jupitermassen (ca. 70 Erdmassen).

Einzelnachweise

  1. a b c Hipparcos-Katalog (ESA 1997)
  2. Pulkovo radial velocities for 35493 HIP stars
  3. a b c Hipparcos, the New Reduction (van Leeuwen, 2007)

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