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The primary is an orange-hued giant star of magnitude 4.9 and the secondary is of magnitude 8. 40 Eridani is a triple star system consisting of an orange main-sequence star, a white dwarf, and a red dwarf. The orange main-sequence star is the primary of magnitude 4.4, and the white secondary of magnitude 9.5 is the most easily visible white dwarf.
When in Nonnus' fourth- or fifth-century CE Dionysiaca the vast monster Typhon boasts that he will bathe in "starry Eridanus", it is hyperbole, for the constellation Eridanus, represented as a river, was one of the 48 constellations listed by the second-century astronomer Ptolemy; it remains one of the 88 modern constellations.
Upsilon 4 Eridani is a close binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.56. [ 2 ] Based upon parallax measurements, the pair are located around 54.6 parsecs (178 ly) from the Sun. [ 1 ]
Eridanos (mythology) (or Eridanus), a river in Greek mythology, somewhere in Central Europe, which was territory that Ancient Greeks knew only vaguely; The Po River, according to Roman word usage; Eridanos (Athens), a former river near Athens, now subterranean
Eridanus was the 'deep-swirling' river-god son of the Titans Oceanus and his sister-wife Tethys. [1] He was the father of Zeuxippe, mother of the Argonauts Butes and Eribotes by Teleon. [2] Eridanus may be the same or different with his another river-god namesake.
Eta Eridani (η Eridani, abbreviated Eta Eri, η Eri), officially named Azha (with a silent 'h', possibly / ˈ eɪ z ə /), [8] [7] is a giant star in the constellation of Eridanus. Based on parallax measurements taken during the Hipparcos mission, it is approximately 137 light-years from the Sun .
The formation of the Eridanos began about 40 million years ago in the Eocene.By about 12 million years ago in the Miocene, the Eridanos had reached the area currently occupied by the North Sea, where sediments carried by the river built an immense delta.
The Albanian Wikipedia (Albanian: Wikipedia Shqip) is the Albanian language edition of Wikipedia started on 12 October 2003. As of 17 February 2025, the Wikipedia has 101,694 articles and is the 73rd-largest Wikipedia.