{"id":63848,"date":"2024-09-17T10:38:56","date_gmt":"2024-09-17T10:38:56","guid":{"rendered":"http:\/\/176ae60b-9fd4-45ff-a24e-bf6230bcf868"},"modified":"2024-09-17T11:39:46","modified_gmt":"2024-09-17T11:39:46","slug":"giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/rss_feed\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern\/","title":{"rendered":"Giant star 19 Piscium is 4,700 times brighter than our Sun and can be found in the famous Circlet star pattern"},"content":{"rendered":"

<\/p>

By Pete Lawrence\n <\/p>

Published: Tuesday, 17 September 2024 at 10:38 AM<\/p>

\n\n

19 Piscium is a giant carbon star and through the eyepiece shows the distinct orange-red hue typical of this class.<\/p>

You can find it by starting with the Circlet asterism<\/a> in Pisces<\/a>, is a well-known, albeit faint, pattern associated with the autumn sky.<\/p>

Find the Circlet by first locating the Great Square of Pegasus. Click to expand. Credit: Pete Lawrence<\/figcaption><\/figure>
The Circlet is located near the Great Square of Pegasus<\/a> and is formed of six or seven stars ranging in magnitude between +3.7 and +5.0.<\/p>
The one that is only sometimes included is the star on the extreme east, 19 Piscium.<\/p>
This star is 2.7\u00ba southeast of mag. +4.1 Iota (\u03b9) Piscium and 2\u00ba north-northeast of mag. +4.5 Lambda (\u03bb) Piscium.<\/p>
At mag. +4.9, 19 Piscium is at the fainter end of naked- eye visibility, but despite this and its propensity to sometimes be dropped from the Circlet pattern altogether, it\u2019s a pretty interesting and much studied star.<\/p>
$\"Chart$
Chart showing the location of star 19 Piscium. Click to expand. Credit: Pete Lawrence<\/figcaption><\/figure>
Facts about 19 Piscium<\/strong><\/h2>
19 Piscium shows variability in its brightness, fluctuating between magnitude +4.5 and +6.2 over an irregular period.<\/p>
As a variable star it is also known as TX Piscium.\u00a0<\/p>
The star is 760 lightyears distant. It has a spectral classification of C5III, C being part of the spectral classification<\/a> system for carbon stars, 5 being a value half way along the C scale and the III meaning that it\u2019s a giant star.<\/p>
$\"Photographing$
Photographing star trails is a great way to bring out the colour of red stars such as 19 Piscium. Credit: Pete Lawrence<\/figcaption><\/figure>
It\u2019s also relatively cool with a temperature of 3,050K, meaning that most of its output occurs in the infrared<\/a> part of the spectrum.<\/p>
Despite its rather diminutive appearance from Earth, 19 Piscium\u2019s luminosity \u2013 a measure of total radiation emitted across all wavelengths \u2013 is 4,700 times greater than that of our Sun.\u00a0<\/p>
The star\u2019s angular diameter has been directly measured, and coupled with its distance this information can be used to calculate the star\u2019s physical diameter.<\/p>
It is 240 times larger than the Sun, giving it a circumference 1.2 times that of Earth\u2019s orbit<\/a>.<\/p>
***Have you observed or photographed 19 Piscium? Let us know by emailing*** ***contactus@skyatnightmagazine.com<\/a><\/em><\/strong><\/p>***
***This article appeared in the October 2017 issue of BBC Sky at Night Magazine.<\/em><\/strong><\/p> <\/body><\/html>\n***
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By Pete Lawrence Published: Tuesday, 17 September 2024 at 10:38 AM 19 Piscium is a giant carbon star and through the eyepiece shows the distinct orange-red hue typical of this class. You can find it by starting with the Circlet asterism in Pisces, is a well-known, albeit faint, pattern associated with the autumn sky. Find […]<\/p>\n","protected":false},"author":24,"featured_media":63849,"template":"","categories":[1],"acf":{"readingTimeMinutes":"2"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern.jpg",1734,1102,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern-300x191.jpg",300,191,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern-768x488.jpg",768,488,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern-1024x651.jpg",800,509,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern-1536x976.jpg",1536,976,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/09\/giant-star-19-piscium-is-4700-times-brighter-than-our-sun-and-can-be-found-in-the-famous-circlet-star-pattern.jpg",1734,1102,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Pete Lawrence Published: Tuesday, 17 September 2024 at 10:38 AM 19 Piscium is a giant carbon star and through the eyepiece shows the distinct orange-red hue typical of this class. You can find it by starting with the Circlet asterism in Pisces, is a well-known, albeit faint, pattern associated with the autumn sky. Find…","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed\/63848"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/63849"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=63848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=63848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}