Therefore, N is inversely proportional to the radius cubed and in fair agreement with the inverse 7/2 power derived from 1958 Alpha and 1959 Eta data.

the Eta Chamaeleontis cluster or Mamajek 1, is 8 million years old, and lies 316 light years from Earth.

Eta ( uppercase Η, lowercase η ) ) is the seventh letter of the Greek alphabet.

Thus in Modern Greek, Eta is pronounced and represents the sound / i / ( a close front unrounded vowel ).

is: Eta

Apart from the unusual Eta Carinae, Mira is the brightest periodic variable in the sky that is not visible to the naked eye for part of its cycle.

* April – Eta Carinae is temporarily the second-brightest star in the night sky.

Davidson is principal investigator for the Eta Carina observations by the Hubble Space telescope.

Because its orbit comes close to Earth's in two places, Halley's Comet is the parent body of two meteor showers: the Eta Aquariids in early May, and the Orionids in late October.

A former student of Bultmann, Eta Linnemann, followed by F. David Farnell, is the best known proponent of a simultaneous priority of Matthew and Mark under the Mosaic requirement that " on the evidence of two or three witnesses a matter shall be confirmed " ( Deuteronomy 19: 5 ).

He is referred to as Eta Beta in Italian, and Gamma in German.

Eta Carinae ( η Carinae or η Car ) is a stellar system in the constellation Carina, about 7, 500 to 8, 000 light-years from the Sun.

It is thought that a hot supergiant of approximately 30 solar masses exists in orbit around its larger companion star, although an enormous thick red nebula surrounding Eta Carinae makes it impossible to see optically.

Eta Carinae is enclosed in the Homunculus Nebula, itself part of the much larger Carina Nebula.

It is also known as (, ), referring to Sea and Mountain, an asterism that Eta Carinae forms with s Carinae, λ Centauri and λ Muscae.

Eta Carinae's chief significance for astrophysics is based on its giant eruption or supernova impostor event, which was observed around 1843.

One remarkable aspect of Eta Carinae is its changing brightness.

This is the only definitive indigenous record of Eta Carinae's outburst identified in the literature to date.

4U 1037 – 60 ( A 1044 – 59 ) is Eta Carinae.

Primary goals of these observations were to determine if, in fact, Eta Carinae is a binary star and, if so, to identify its companion star ; to determine the physical mechanism behind the " spectroscopic minima "; and to understand their relation ( if any ) to the large-scale eruptions of the 19th century.

If Eta Carinae is a binary system, this may affect the future intensity and orientation of the supernova explosion that it produces, depending on the circumstances.

The unofficial motto is " η β π ", or " Eta Beta Pi " ( Eat a Bit of Pie or Eat a Better Pie ( according to the Hogfather novel ).

Eta Canis Majoris ( η CMa, η Canis Majoris ) is a star in the constellation Canis Major.

After 1843, Eta Carinae faded and between about 1900 and 1940 it was only 8th magnitude, invisible to the naked eye.

It is also the only fraternity to have chapters simultaneously at all eight Ivy League schools with the chartering of Eta at Yale University in 1889 ( though this claim lasted only a few years, owing to burgeoning faculty opposition to the Princeton chapter ).

It took root at no fewer than fourteen colleges in those latter days: Omega was founded at University of Chicago in 1864 ; Pi at Rensselaer Polytechnic Institute in 1865 ; Lambda, Bowdoin College, 1867 ; Beta, University of Virginia, 1868 ; Psi, Cornell University, 1868 ; Iota, UC Berkeley, 1870 ; Gamma, first at the US Naval Academy in 1874, and then at Syracuse College in 1875 after the government proscribed Fraternities at its military academies ; Theta Xi, University of Toronto, 1879 ; Alpha, Columbia University, 1879 ; Alpha Psi, McGill University, 1883 ; Nu, Case Western Reserve, 1884 ; Eta, Yale, 1889 ; Mu, Stanford, 1892 ; Alpha Beta, University of Minnesota, 1899 ( The establishment of the Eta chapter at Yale made Zeta Psi the only fraternity to establish chapters at all eight Ivy-League schools ).

Though Eta Carinae is some 7, 500 light-years away, its luminosity is so great that relatively small structures only 10 billion miles across — about the diameter of our solar system — can be distinguished.

Statistically, the most significant data have been collected from the sensors on 1958 Alpha ( Explorer 1 ), 1958 Delta 2 ( Sputnik 3 ), and 1959 Eta ( Vanguard 3 ).

Located within the constellation Canes Venatici, M51 is found by following the easternmost star of the Big Dipper, Eta Ursae Majoris, and going 3. 5 ° southeast.

Thus book 1 is called Alpha ( Α ); 2, little alpha ( α ); 3, Beta ( Β ); 4, Gamma ( Γ ); 5, Delta ( Δ ); 6, Epsilon ( Ε ); 7, Zeta ( Ζ ); 8, Eta ( Η ); 9, Theta ( Θ ); 10, Iota ( Ι ); 11, Kappa ( Κ ); 12, Lambda ( Λ ); 13, Mu ( Μ ); 14, Nu ( Ν ).

Preliminary data from 1959 Eta give an average impact rate of Af for masses larger than Af for about 1000 events in a 22-day period ( LaGow and Alexander, 1960 ).

The values agree with the data from 1958 Alpha and 1959 Eta.

The second Eta chapter of Phrateres, a non-exclusive, non-profit social-service club, was installed here in 1958.

Lambda, Mu, Xi, Nu, Gamma, and Alpha Ceti represented its head ; Omicron, Zeta, and Chi Ceti represented its body ; Eta Eri, Tau Cet, and Upsilon Cet marked its legs and feel ; and Theta, Eta, and Beta Ceti delineated its tail.

Japan, like China and Korea, had its own untouchable caste, shunned and ostracized, historically referred to by the insulting term Eta, now called Burakumin.

* Harich-Schneider, Eta.

In the former role, it was later replaced in the classic Greek alphabet by Eta ( Η ), which was taken over from eastern Ionic alphabets, while in the latter role it was replaced by the digraph spelling ΕΙ.

Letters that arose from Eta include the Latin H and the Cyrillic letter И.

Eta ( Heta ) in the function of / h / on the ostrakon of Megacles, son of Hippocrates, 487 BC.

Eta in the function of / h / on an Attic Red-figure pottery | red-figured Calyx ( mythology ) | calyx-krater, 515 BC.

Other regional variants of the Greek alphabet ( epichoric alphabets ), in dialects that still preserved the sound / h /, employed various glyph shapes for consonantal Heta side by side with the new vocalic Eta for some time.

Eta was also borrowed with the sound value of into the Cyrillic script, where it gave rise to the Cyrillic letter И.

Nicolas Louis de Lacaille gave twelve stars Bayer designations of Alpha through to Lambda, with two close stars called Eta, while Lambda was later dropped due to its dimness.

The much reduced constellation lost several brighter stars to neighbouring constellations: Beta Telescopii became Eta Sagittarii, which it had been before Lacaille placed it in Telescopium, Gamma was placed in Scorpio and renamed G Scorpii by Benjamin Gould, Theta Telescopii reverted to its old appellation of d Ophiuchi, and Sigma Telescopii was placed in Corona Australis.

Except for Dubhe and Alkaid ( Eta Ursae Majoris ), the stars of the Big Dipper all have proper motions heading toward a common point in Sagittarius.

Classified as a Peculiar star, Eta Carinae exhibits a superstar at its center as seen in this image from Chandra X-ray Observatory.