Epsilon Carinae (ε Car / ε Carinae) is a star in the constellationCarina. At apparent magnitude +1.86 it is one of the brightest stars in the nighttime sky, but is not visible from the northern hemisphere. It also has the traditional name Avior; the origin of this name is not known. The Pleiades star cluster A star is any massive gaseous body in outer space. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Carina (Latin for keel) is a southern constellation which forms part of the old constellation of Argo Navis. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... Bright stars can be bright because they produce more light, or because they are closer to us. ... The Northern Hemisphere is the half of a planets surface (or celestial sphere) that is north of the equator. ...
Epsilon Carinae is in fact a double star and is 630 light years away from Earth. One star is a hot blue spectral class B (hydrogen-fusing) dwarf, the other a dying class K orange giant, of spectral type K0 (Morgan-Keenan: K3III+B2:V). A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third planet outward from the Sun. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ...
Assuming that Eta Carinae is a binary, its x-ray output should vary with the orbital period of a smaller star revolving around a common center of mass with a larger star in a repeating cycle.
While Eta Carinae A is too cool to generate X-rays, it continuously blasts a flow of gas into space in a stellar wind at about 300 miles per second that collides with a similiar wind from Star B somewhere between the two stars to generate the observed X-rays.
A large southern constellation, Carina is the keel of the even larger, ancient constellation of Argo Navis, the ship of the Argonauts, which also included Vela's sibling constellations of Puppis, Pyxis, and Vela.
Epsilon (ε) Carinae / NSV4058 / HIP 41037 / PPM 336856 / SAO 235932 / HD 71129 (08225-5931) is a suspected eclipsing binary system whose variations are thought to change between 1.64V and 1.82V in an unknownperiod.
E of EpsilonCarinae and lies on the westward line passing through I 801 (above) Magnitude change between 7.90V and 8.65V in a period of 1.0826310 days or 01d 01h 59m59.3 s from the epoch of 18th November 1937 (JDE 2428857.146.) Both stars are classed as A0V P=1.0926310 in ACTA (1980).
Upsilon Carinae / υ Car / RMK 11 (09471-6504) is one of the brightest double stars in the southern skies and rates among the very best pairs for small apertures.
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