HD 11506

Stern
HD 11506
HD 11506
{{{Kartentext}}}
AladinLite
Beobachtungsdaten
ÄquinoktiumJ2000.0, Epoche: J2000.0
Sternbild Walfisch
Rektaszension 01h 52m 50,5s [1]
Deklination −19° 30′ 25″ [1]
Winkelausdehnung {{{Winkel}}} mas
Bekannte Exoplaneten 1
Helligkeiten
Scheinbare Helligkeit 7,51 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 G0 V[1]
Astrometrie
Radialgeschwindigkeit (−8,1 ± 1,1) km/s[2]
Parallaxe (19,34 ± 0,58) mas[3]
Entfernung (169 ± 5) Lj
(51,7 ± 1,6) pc [3]
Visuelle Absolute Helligkeit Mvis ca. +3,9 mag[4]
Bolometrische Absolute Helligkeit Mbol {{{Absolut-bol}}} mag[4]
Eigenbewegung[3]
Rek.-Anteil: (+22,87 ± 0,46) mas/a
Dekl.-Anteil: (−98,85 ± 0,35) mas/a
Physikalische Eigenschaften
Masse  M
Radius  R
Leuchtkraft

 L

Effektive Temperatur  K
Metallizität [Fe/H]
Rotationsdauer
Alter  a
Andere Bezeichnungen und Katalogeinträge
Bonner DurchmusterungBD −20° 358
Henry-Draper-KatalogHD 11506 [1]
Hipparcos-KatalogHIP 8770 [2]
SAO-KatalogSAO 148079 [3]
Tycho-KatalogTYC 5858-2028-1[4]Vorlage:Infobox Stern/Wartung/AngabeTYC-Katalog
Anmerkung
{{{Anmerkung}}}

HD 11506 ist ein Hauptreihenstern der Spektralklasse G0, der von den zwei potentiellen Exoplaneten HD 11506 b und HD 11506 c umkreist wird. Der Stern liegt im Sternbild Walfisch und besitzt eine Masse von ca. 1,2 Sonnenmassen.

Exoplaneten-Kandidaten

HD 11506 b umrundet den Zentralstern mit einer Umlaufperiode von 1270 Tagen in einer Entfernung von ca. 2,43 Astronomischen Einheiten und hat eine Mindestmasse von ca. 3,44 Jupitermassen. Das Objekt wurde im Jahr 2007 von Debra Fischer et al. mit Hilfe der Radialgeschwindigkeitsmethode entdeckt.[5] HD 11506 c umrundet den Zentralstern mit einer Umlaufperiode von 170 Tagen in einer Entfernung von ca. 0,64 AU bei einer Mindestmasse von ca. 0,82 Jupitermassen. Das Objekt wurde von Mikko Tuomi und Samuli Kotiranta entdeckt, nachdem diese die Daten von Debra Fischer mithilfe neuerer Computermodelle genauer untersuchen konnten.

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)
  4. aus scheinbarer Helligkeit und Entfernung geschätzt
  5. Planet HD 11506 b In: The Extrasolar Planets Encyclopaedia (englisch)


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