HD 146389 (also known as WASP-38 ), is a star with a yellow-white hue in the northern constellation of Hercules . The star was given the formal name Irena by the International Astronomical Union in January 2020. It is invisible to the naked eye with an apparent visual magnitude of 9.4 The star is located at a distance of approximately 446 light years from the Sun based on parallax , but is drifting closer with a radial velocity of −9 km/s. The star is known to host one exoplanet , designated WASP-38b or formally named 'Iztok'.
9-686: [REDACTED] Look up Irena in Wiktionary, the free dictionary. Irena may refer to: People [ edit ] Irena (name) Places [ edit ] Irena, Missouri , a village in the United States Irena, Subcarpathian Voivodeship , a village in south-east Poland Irena, Lublin Voivodeship, a town in eastern Poland, merged into nearby Dęblin in 1953 Other uses [ edit ] HD 146389 (also known as WASP-38 or Irena),
18-587: A genus of passerine birds IRENA, the Nicaraguan Institute of Natural Resources and the Environment, now the Ministry of the Environment and Natural Resources See also [ edit ] Irene (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Irena . If an internal link led you here, you may wish to change
27-477: A star with a yellow-white hue in the northern constellation of Hercules International Renewable Energy Agency , an intergovernmental organisation mandated to promote adoption and use of renewable energy Irena (bird) , a genus of passerine birds IRENA, the Nicaraguan Institute of Natural Resources and the Environment, now the Ministry of the Environment and Natural Resources See also [ edit ] Irene (disambiguation) Topics referred to by
36-435: A village in south-east Poland Irena, Lublin Voivodeship, a town in eastern Poland, merged into nearby Dęblin in 1953 Other uses [ edit ] HD 146389 (also known as WASP-38 or Irena), a star with a yellow-white hue in the northern constellation of Hercules International Renewable Energy Agency , an intergovernmental organisation mandated to promote adoption and use of renewable energy Irena (bird) ,
45-449: Is F8, which is an F-type star of uncertain luminosity class . The age of the star is uncertain. It shows a low lithium abundance, which suggests an age of more than 5 billion years. However, the rotation rate indicates an age closer to one billion. The study in 2015 utilizing Chandra X-ray Observatory , have failed to detect any X-ray emissions from the star during planetary eclipse, which may indicate an unusually low coronal activity or
54-426: Is different from Wikidata All article disambiguation pages All disambiguation pages Irena [REDACTED] Look up Irena in Wiktionary, the free dictionary. Irena may refer to: People [ edit ] Irena (name) Places [ edit ] Irena, Missouri , a village in the United States Irena, Subcarpathian Voivodeship ,
63-433: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Irena&oldid=1156551767 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages HD 146389 The stellar classification of HD 146389
72-517: The presence of absorbing gas ring formed by atmosphere escaping planet WASP-38 b. The star is 33% larger and 20% more massive than the Sun. It is radiating nearly three times the luminosity of the Sun at an effective temperature of 6,150 K. The "hot Jupiter" class planet WASP-38 b, later named 'Iztok', was discovered around HD 146389 in 2010. The planet is losing significant amount of gas, estimated to 0.023 Earth masses per billion years. In 2013, it
81-446: The same term [REDACTED] This disambiguation page lists articles associated with the title Irena . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Irena&oldid=1156551767 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description
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