Eta Cassiopeiae - Wikipedia
WEBEta Cassiopeiae (η Cassiopeiae, abbreviated Eta Cas, η Cas) is a binary star system in the northern constellation of Cassiopeia. Its binary nature was first discovered by William Herschel in August 1779.
Achird (η Cassiopeiae) | Facts, Information, History & Definition
WEBJun 12, 2020 · Achird, otherwise known as Eta Cassiopeiae, is a binary star system located in the northern circumpolar constellation of Cassiopeia. Its binary nature was discovered in 1779, by William Herschel. Key Facts & Summary. The Achird star system is situated at around 19.42 light-years away from the Sun.
Eta Cassiopeiae (Achird) 2 - Nova.Org
WEBEta Cassiopeiae became one of the top 100 target stars for NASA's proposed Terrestrial Planet Finder (TPF), but the project has been postponed indefinitely.
Eta Cassiopeia - star system information, planets and resources
WEBThe Eta Cassiopeia star system hosts four planets and five moons. With just a few bodies, Eta Cassiopeia is offering simplicity and ease of exploration for those venturing into its cosmic expanse.
Cassiopeia (constellation) - Wikipedia
WEBTheta Cassiopeiae, named Marfak, is a suspected variable star whose brightness changes by less than a tenth of a magnitude. Iota Cassiopeiae is a triple star 142 light-years from Earth.
Eta Cassiopeiae - Wikiwand
WEBEta Cassiopeiae (η Cassiopeiae, abbreviated Eta Cas, η Cas) is a binary star system in the northern constellation of Cassiopeia. Its binary nature was first discovered by William Herschel in August 1779.
How to find and observe Eta Cas (TOTS#2) | EOTS - Eyes On The Sky
WEBTOTS #2 is a detailed written and video reference to finding and observing the double star Eta Cassiopeiae in the constellation of Cassiopeia. This guide is ideal for beginners, but many advanced amateur astronomers may find it useful to help locate this double star with almost any telescope set up.
Eta Cassiopeiae (Achird): A Colorful Double Star in Cassiopeia
WEBDec 5, 2020 · Eta Cassiopeiae, also known as Achird, is a double-star system in the constellation Cassiopeia. It's best viewed in autumn through early winter. What's also notable is how close Achird is to us. Relatively, this double is very close at …
Achird - η Cassiopeiae (eta Cassiopeiae) - Star in Cassiopeia ...
WEBAchird, also designated as η Cassiopeiae (eta Cassiopeiae), is a multiple main-sequence star of spectral class F9 in the constellation of Cassiopeia. Achird visual magnitude is 3.44.
Eta Cassiopeiae - Wikiwand
WEBEta Cassiopeiae is a binary star system in the northern constellation of Cassiopeia. Its binary nature was first discovered by William Herschel in August 1779. Based upon parallax measurements, the distance to this system is 19.42 light-years from the Sun.