{"id":2510,"date":"2022-02-27T14:38:00","date_gmt":"2022-02-27T13:38:00","guid":{"rendered":"https:\/\/kosmos-os.de\/?p=2510"},"modified":"2023-09-01T20:56:37","modified_gmt":"2023-09-01T18:56:37","slug":"exoplanet-xo-2-n-b-am-27-02-2022","status":"publish","type":"post","link":"https:\/\/kosmos-os.de\/en\/exoplanet-xo-2-n-b-am-27-02-2022\/","title":{"rendered":"Exoplanet XO-2 N b at 27th February 2022"},"content":{"rendered":"


<\/p>\n\n\n\n

By Thomas Grunge<\/p>\n\n\n\n


<\/p>\n\n\n\n

About 500 light-years away in the constellation Lynx, two Sun-like stars (yellow dwarfs) orbit each other. Both stars, XO-2 N and XO-2 S, have a total of three exoplanets, which were detected in 2007 using the transit method. XO-2 N b is a gas giant orbiting a star of spectral class G. The mass of the exoplanet is about 0.566 Jupiter masses. It takes about 2.6 days for a complete orbit around its star. The distance is only 0.0368 AU (5.5 million km).<\/p>\n\n\n\n


<\/p>\n\n\n\n

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Sternkarte<\/em><\/figcaption><\/figure>\n\n\n\n

Due to the very short distance to its parent star, the exoplanet, which is about the size of Jupiter, is heated to an average surface temperature of 1300 Kelvin.<\/p>\n\n\n\n

On https:\/\/astro.swarthmore.edu<\/a> the position of the star and the time of the transit were determined.<\/p>\n\n\n\n

The star has a visual magnitude of 11.1 mag, which is attenuated by the exoplanet around 0.0106.<\/p>\n\n\n\n


<\/p>\n\n\n\n

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Screenshot transit finder<\/em><\/figcaption><\/figure>\n\n\n\n

With amateur means, the exoplanet XO-2 N b was observed by photometric measurements on 24.2.2022.<\/p>\n\n\n\n


<\/p>\n\n\n\n

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Measurement of brightness differences of XO-2 N b<\/em><\/figcaption><\/figure>\n\n\n\n

Technical data:<\/p>\n\n\n\n

7\u201c Maksutov-Teleskop @ F\/6.3, SBIG ST10 @-20\u00b0C, Luminanzfilter, 120 Sec.exposure, 1\u00d71 binning.<\/p>\n\n\n\n

150 Lights, 16 Darks, 16 Flats, 16 Flatdarks<\/p>\n\n\n\n

Processing with Muniwin 2.1<\/p>\n\n\n\n

The Muniwin data was included in the ETD – Exoplanet Transit Database<\/a> transmitted and evaluated.<\/p>\n\n\n\n

The results ETD agree relatively well with the predictions of https:\/\/astro.swarthmore.edu<\/a> .<\/p>\n\n\n\n


<\/p>\n\n\n\n

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Screenshot ETD<\/em><\/figcaption><\/figure>\n\n\n\n


<\/p>\n\n\n\n

As icing on the cake, I was able to detect another variable star in the dataset, which I still need to determine more precisely.<\/p>\n\n\n\n

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Screenshot Muniwin<\/em><\/figcaption><\/figure>\n\n\n\n


<\/p>","protected":false},"excerpt":{"rendered":"

Two sun-like stars (yellow dwarfs) orbit each other 486 light-years away in the constellation Lynx. Both stars, XO-2 N and XO-2 S, have a total of three exoplanets detected using the transit method. With amateur means, one of these exoplanets, XO-2 N b, could be detected on February 27, 2022 by a light curve.<\/p>","protected":false},"author":3,"featured_media":2516,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[20],"tags":[112,158,164,163,165],"class_list":["post-2510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exoplaneten","tag-astronomie","tag-exoplanet","tag-lichtkurve","tag-lightcurve","tag-photometrie"],"_links":{"self":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/2510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/comments?post=2510"}],"version-history":[{"count":9,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/2510\/revisions"}],"predecessor-version":[{"id":3072,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/2510\/revisions\/3072"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/media\/2516"}],"wp:attachment":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/media?parent=2510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/categories?post=2510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/tags?post=2510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}