ACAMAR (Theta Eridani). Eridanus, the River, the embodiment of the Greek's "River Ocean," unlike real rivers has two ends.
Acamar is a binary star system. The primary, Acamar A, is an A4III normal giant. This star is much hotter than the sun and white in color. Even though the smaller star is technically a dwarf, both stars are larger in mass and radius than our sun.
89 Azha (?) corruption of Persian آشيانه āšiyāne The (ostrich) nest:* (θ Eri) Acamar - double 3.89, 4.35 ākhir an-nahr = "Last of the river" [named before Achernar was added], with a handwriting misread rn - m.
The names of the main named stars, Achernar (α Eri), and Acamar, (θ Eri) are sufficiently similar to raise some questions, and in classical times Acamar, on the southern edge of Fornax was indeed the end of the celestial river, ...
2000.0) of Constellation Horologium, the Pendulum Clock -- southwest of Alpha and Delta Horologii, northeast of Beta Horologii, east of Alpha Doradus, northwest of Alpha and Beta Reticuli, southeast of Phi and Chi Eridani, and southeast of Acamar ...
Other notable stars in Eridanus include [3682] theta Eridani or Acamar ("the last of the river"), a binary pair of blue-white stars 120 light-years distant, [3681] gamma Eridani or Zaurak ("the boat"), a yellow star with an apparent magnitude of 2.
Curiously theta Eridani bears nearly the same name, Acamar. This is a variation on Achernar since this star was once the river's terminus and it then bore the name now carried by alpha Eridani.
Double stars: ...
Azha (Eta Eri)
ACAMAR (Theta 1 Eri)
Beid (Omicron 1 Eri)
Keid (Omicron 2 Eri)
Angetenar (Tau 2 Eri)
Theemim (Upsilon 2 Eri)
Sceptrum (53 Eri)
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Chris Dolan's Home Page ...
NameBayer or Catalogue DesignationAlternate Name(s)
Acamar
theta1 Eridani
Achernar ...
Named stars: Alpha Eri (Achernar), Beta Eri (Cursa), Gamma Eri (Zaurak), Theta Eri (Acamar)
Info:
Fornax (Furnace) ...
Alpha Eridani
Rana system (Delta Eridani)
Epsilon Eridani
Sigma Eridani (there is no "Sigma" star in the modern Eridanus constellations)
40 Eridani A (Omicron-2 Eridani)
Acamar (Theta Eridani)
Fornax (Fornacis) ...
Eridanus originally ended with the star Acamar, which is the last bright star visible to people living in northern latitudes. As sailors began to travel to the Southern Hemisphere, the constellation was continued to the star Achernar.
 See also: Star, Eridanus, Constellation, Achernar, Sky
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