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- Beta_Delphini abstract "Beta Delphini (Beta Del, β Delphini, β Del) is a binary star in the constellation of Delphinus. As a practical joke, the astronomer Niccolò Cacciatore gave it the name Rotanev, which is a reversal of his Latinized family name, Venator. The name first appeared in Giuseppe Piazzi's Palermo Catalogue, published in 1814. Beta Delphini was found to be a binary star system in 1873 by the American astronomer S. W. Burnham.In Chinese, 瓠瓜 (Hù Guā), meaning Good Gourd, refers to an asterism consisting of β Delphini, α Delphini, γ2 Delphini, δ Delphini, and ζ Delphini. Consequently, β Delphini itself is known as 瓠瓜二 (Hù Guā-er, English: the Second Star of Good Gourd.).This system consists of a pair of F-type stars stars that orbit each other with a period of 26.66 years and an eccentricity of 0.36. The plane of the orbit is inclined by an angle of 61° to the line of sight from the Earth. The two stars have an angular separation of about 0.44 arcseconds, making them a challenge to resolve with a telescope. The larger member of the pair is a giant star with 1.75 times the mass and 24 times the luminosity of the Sun, while the secondary component is a subgiant star that has 1.47 times the Sun's mass and around 8 times the Sun's luminosity. The system is around 1.8 billion years old.".
- Beta_Delphini thumbnail Delphinus_IAU.svg?width=300.
- Beta_Delphini wikiPageExternalLink rotanev.shtml.
- Beta_Delphini wikiPageID "2728382".
- Beta_Delphini wikiPageRevisionID "606040440".
- Beta_Delphini ageGyr "1.79".
- Beta_Delphini axis "0.44".
- Beta_Delphini component "Beta Delphini A".
- Beta_Delphini component "Beta Delphini B".
- Beta_Delphini constell Delphinus.
- Beta_Delphini eccentricity "0.36".
- Beta_Delphini epoch Epoch_(astronomy).
- Beta_Delphini equinox Epoch_(astronomy).
- Beta_Delphini gravity "3.5".
- Beta_Delphini hasPhotoCollection Beta_Delphini.
- Beta_Delphini inclination "61".
- Beta_Delphini k "7.6".
- Beta_Delphini luminosity "24".
- Beta_Delphini luminosity "8".
- Beta_Delphini metalFe "–0.05".
- Beta_Delphini node "177".
- Beta_Delphini pError "0.47".
- Beta_Delphini parallax "32.33".
- Beta_Delphini periarg "349".
- Beta_Delphini periastron "6.27838452E10".
- Beta_Delphini period "26.66".
- Beta_Delphini propMoDec "-48.06".
- Beta_Delphini propMoRa "+118.09".
- Beta_Delphini rotationalVelocity "49.8".
- Beta_Delphini temperature "6587".
- Beta_Delphini subject Category:Bayer_objects.
- Beta_Delphini subject Category:Binary_stars.
- Beta_Delphini subject Category:Delphinus_(constellation).
- Beta_Delphini subject Category:Durchmusterung_objects.
- Beta_Delphini subject Category:F-type_main-sequence_stars.
- Beta_Delphini subject Category:F-type_subgiants.
- Beta_Delphini subject Category:Flamsteed_objects.
- Beta_Delphini subject Category:Henry_Draper_Catalogue_objects.
- Beta_Delphini subject Category:Hipparcos_objects.
- Beta_Delphini subject Category:Stars_with_proper_names.
- Beta_Delphini type BayerObjects.
- Beta_Delphini type BinaryStar109221070.
- Beta_Delphini type BinaryStars.
- Beta_Delphini type CelestialBody109239740.
- Beta_Delphini type DurchmusterungObjects.
- Beta_Delphini type F-typeMainSequenceStars.
- Beta_Delphini type FlamsteedObjects.
- Beta_Delphini type HIPObjects.
- Beta_Delphini type HenryDraperCatalogueObjects.
- Beta_Delphini type NaturalObject100019128.
- Beta_Delphini type Object100002684.
- Beta_Delphini type PhysicalEntity100001930.
- Beta_Delphini type Star109444100.
- Beta_Delphini type StarsWithProperNames.
- Beta_Delphini type Whole100003553.
- Beta_Delphini type CelestialBody.
- Beta_Delphini type Star.
- Beta_Delphini type PhysicalBody.
- Beta_Delphini comment "Beta Delphini (Beta Del, β Delphini, β Del) is a binary star in the constellation of Delphinus. As a practical joke, the astronomer Niccolò Cacciatore gave it the name Rotanev, which is a reversal of his Latinized family name, Venator. The name first appeared in Giuseppe Piazzi's Palermo Catalogue, published in 1814. Beta Delphini was found to be a binary star system in 1873 by the American astronomer S. W.".
- Beta_Delphini label "Beta Delphini".
- Beta_Delphini label "Beta Delphini".
- Beta_Delphini label "Beta Delphini".
- Beta_Delphini label "Beta Delphini".
- Beta_Delphini label "Rotanev".
- Beta_Delphini label "Rotanev".
- Beta_Delphini label "Rotanev".
- Beta_Delphini label "Rotanev".
- Beta_Delphini label "Бета Дельфина".
- Beta_Delphini label "いるか座ベータ星".
- Beta_Delphini label "瓠瓜四".
- Beta_Delphini sameAs Rotanev.
- Beta_Delphini sameAs Rotanev.
- Beta_Delphini sameAs Rotanev.
- Beta_Delphini sameAs Beta_Delphini.
- Beta_Delphini sameAs Beta_Delphini.
- Beta_Delphini sameAs Rotanev.
- Beta_Delphini sameAs いるか座ベータ星.
- Beta_Delphini sameAs Rotanev.
- Beta_Delphini sameAs Beta_Delphini.
- Beta_Delphini sameAs Beta_Delphini.
- Beta_Delphini sameAs m.07_ctn.
- Beta_Delphini sameAs Q13522.
- Beta_Delphini sameAs Q13522.
- Beta_Delphini sameAs Beta_Delphini.
- Beta_Delphini wasDerivedFrom Beta_Delphini?oldid=606040440.
- Beta_Delphini depiction Delphinus_IAU.svg.
- Beta_Delphini isPrimaryTopicOf Beta_Delphini.
- Beta_Delphini name "Beta Delphini".