"13 May 1955. ""Electra"" was sold for scrap on 7 June 1974 to Van Komodo International Inc. ""Electra"" received six battle stars for World War II service. USS Electra (AKA-4) USS ""Electra"" (AKA-4) was an ""Arcturus""-class attack cargo ship named after Electra, a star in the Pleiades star cluster in the constellation Taurus. She served as a commissioned ship for seven years. ""Electra"" (AK-21) was launched 18 November 1941 as ""Meteor"" by Tampa Shipbuilding Co., Tampa, Fla., under a Maritime Commission contract; sponsored by Mrs. C. O. Andrews, wife of the Senator from Florida; transferred to the Navy 16 April"
"the amount of Doppler shift in the spectrum. By this means, the recession velocity of Aldebaran was estimated as (48 km/s), using measurements performed at Potsdam Observatory by Hermann C. Vogel and his assistant Julius Scheiner. Aldebaran was observed using an interferometer attached to the Hooker Telescope at the Mount Wilson Observatory in 1921 in order to measure its angular diameter, but it was not resolved in these observations. Aldebaran is classified as a type K5 III star, which indicates it is an orange-hued giant star that has evolved off the main sequence band of the Hertzsprung–Russell diagram after exhausting"
"expanded radius. Aldebaran is a slightly variable star, of the slow irregular variable type ""LB"". It varies by about 0.2 in apparent magnitude from 0.75 to 0.95. With a near-infrared J band magnitude of −2.1, only Betelgeuse (−2.9), R Doradus (−2.6), and Arcturus (−2.2) are brighter. The photosphere shows abundances of carbon, oxygen, and nitrogen that suggest the giant has gone through its first dredge-up stage—a normal step in the evolution of a star into a red giant during which material from deep within the star is brought up to the surface by convection. With its slow rotation, Aldebaran lacks"
"times its previous size and becomes a red giant, such as Aldebaran (or Alpha Tauri). Eventually the red giant sheds its outer layers of gas, which become a planetary nebula, while the core rapidly cools and contracts into a compact, dense white dwarf. The revised Yerkes Atlas system (Johnson & Morgan 1953) listed 11 G-type dwarf spectral standard stars; however, not all of these have survived to this day as standards. The ""anchor points"" of the MK spectral classification system among the G-type main-sequence dwarf stars, i.e. those standard stars that have remained unchanged over years, are beta CVn (G0V),"
"formed a wide binary star system. Working at his private observatory in Tulse Hill, England, in 1864 William Huggins performed the first studies of the spectrum of Aldebaran, where he was able to identify the lines of nine elements, including iron, sodium, calcium, and magnesium. In 1886, Edward C. Pickering at the Harvard College Observatory used a photographic plate to capture fifty absorption lines in the spectrum of Aldebaran. This became part of the Draper Catalogue, published in 1890. By 1887, the photographic technique had improved to the point that it was possible to measure a star's radial velocity from"
"the general direction of this constellation. The Beta Taurid meteor shower occurs during the months of June and July in the daytime, and is normally observed using radio techniques. Between 18 and 29 October, both the Northern Taurids and the Southern Taurids are active; though the latter stream is stronger. However, between November 1 and 10, the two streams equalize. The brightest member of this constellation is Aldebaran, an orange-hued, spectral class K5 III giant star. Its name derives from """", Arabic for ""the follower"", probably from the fact that it follows the Pleiades during the nightly motion of the"
"with the C and D component stars gravitationally bound to and co-orbiting each other. These co-orbiting stars have been shown to be located far beyond Aldebaran and are members of the Hyades star cluster. As with the rest of the stars in the cluster they do not physically interact with Aldebaran in any way. In 1993, radial velocity measurements of Aldebaran, Arcturus and Pollux showed that Aldebaran exhibited a long-period radial velocity oscillation, which could be interpreted as a ""substellar companion"". The measurements for Aldebaran implied a companion with a minimum mass 11.4 times that of Jupiter in a 643-day"
"of science fiction. Aldebaran may be referred to in fictional works for its metaphorical (meta) or mythological (myth) associations, or else as a bright point of light in the sky of the Earth, but not as an astronomical location in space or the center of a planetary system: ""There follow references to Aldebaran as a location in space or the center of a planetary system, categorized by genre:"" Songs - The items in this subsection all refer to works in the film, television, and print franchise originated by Gene Roddenberry. For a list containing many stars and planetary systems that"
"ultimate secrets of the universe. According to Friedrich von Junzt's ""Unaussprechlichen Kulten"", Nyarlathotep dwells or is imprisoned on this world (though other legends differ in this regard). Aldebaran is the star of the Great Old One Hastur. Double star mentioned by H.P. Lovecraft as sidereal place of a demonic shining entity made of light. The same star is also described in other Mythos stories as a planetary system host (See Ymar) and sidereal prison of the Dholes. Arcturus is the star from which came Zhar and his ""twin"" Lloigor. Also Nyogtha is related to this star. Argo Navis is a"
"way that they were approximately 6 hours apart in right ascension. Each of these stars was assigned to a season, Aldebaran was prominent in the March sky and as such, it was associated with the vernal equinox. Its current celestial longitude is 09 Ge. 47 as of 2006 The four royal stars with their modern and ancient Persian names were To medieval astrologers, Aldebaran was one of fifteen Behenian stars, associated with rubies, milk thistles and the kabbalistic sign . In Hindu astrology, Aldebaran corresponds to the Rohini Nakshatra. In Western Sidereal Astrology, computation is based on defining Aldebaran as"
"until it reaches the termination shock boundary with the hot, ionized interstellar medium that dominates the Local Bubble, forming a roughly spherical astrosphere with a radius of around 1,000 AU, centered on Aldebaran. Aldebaran is one of the easiest stars to find in the night sky, partly due to its brightness and partly due to its spatial relation to one of the more noticeable asterisms in the sky. If one follows the three stars of Orion's belt from left to right (in the Northern Hemisphere) or right to left (in the Southern), the first bright star found by continuing that"
"its giant host star. Nevertheless, when Aldebaran was a main sequence star, it is likely that the planet had an equilibrium temperature comparable to that of the Earth. The host star, Aldebaran, is an orange giant star, meaning it has moved off from the main sequence and exhausted the supply of hydrogen in the core. It has a spectral class of K5 III. Aldebaran is a K-type star that is 1.16 ± 0.07 times the mass and 44 times the radius of the Sun. It has a surface temperature of 3,910 K. In comparison, the Sun has a surface temperature"
"of 5778 K. The star's average apparent magnitude, or how bright it usually appears from Earth, is 0.86, easily visible to the naked eye. The exoplanet was first proposed in 1993, radial velocity measurements of Aldebaran, Arcturus and Pollux showed that Aldebaran exhibited a long-period radial velocity oscillation, which could be interpreted as a ""substellar companion"". The measurements for Aldebaran implied a companion with a minimum mass 11.4 times that of Jupiter in a 643-day orbit at a separation of in a mildly eccentric orbit. However, all three stars surveyed showed similar oscillations yielding similar companion masses, and the authors"
"Altair in fiction Altair (Alpha Aquilae) is a luminous white star in the constellation Aquila (the Eagle) frequently featured in works of science fiction. Classified as an A-type main-sequence star, and located 16.7 light-years from Earth, Altair is one of the few stars for which a resolved image of measurable nonzero extent has been obtained. It rotates so rapidly, with a period of just 9 hours – compared to 25 days for the Sun – that it is significantly oblate, having an equatorial diameter more than 20 percent greater than its polar diameter. Among the authors of the fictional works"
"130 Elektra Elektra ( ; minor planet designation: 130 Elektra) is a very large outer main-belt asteroid. It was discovered on 17 February 1873, by astronomer Christian Peters at Litchfield Observatory, New York, and named after Electra, an avenger in Greek mythology. Its spectrum is of the G type; hence it probably has a Ceres-like composition. Spectral signatures of organic compounds have been seen on Elektra's surface and it displays evidence of aqueous alteration. In the late 1990s, a network of astronomers worldwide gathered lightcurve data that was ultimately used to derive the spin states and shape models of 10"
"line is Aldebaran. Since the star is located (by chance) in the line of sight between the Earth and the Hyades, it has the appearance of being the brightest member of the more scattered Hyades open star cluster that makes up the bull's-head-shaped asterism; however, the star cluster is actually more than twice as far away, at about 150 light years. Aldebaran is 5.47 degrees south of the ecliptic and can be occulted by the Moon. Such occultations occur when the Moon's ascending node is near the autumnal equinox. A series of 49 occultations occurred starting on 29 January 2015"
"are defined by a 17-sided polygon. In the equatorial coordinate system, the right ascension coordinates of these borders lie between and , while the declination coordinates are between and . The International Astronomical Union (IAU) adopted the three-letter abbreviation ""Lyr"" for the constellation in 1922. The brightest and by far the most well-known star in the constellation is Vega, a main-sequence star of spectral type A0Va. Only 7.7 parsecs distant, is a Delta Scuti variable, varying between magnitudes −0.02 and 0.07 over 0.2 days. On average, it is the second-brightest star of the northern hemisphere (after Arcturus) and the fifth-brightest"
"Aldebaran b Aldebaran b is an exoplanet orbiting the orange giant star Aldebaran, 65 light-years away. It was initially detected in 1993, but was considered doubtful until in 2015, when researchers came to a conclusion that there is likely an exoplanet orbiting Aldebaran, consistent with the original calculations, but also compatible with stellar activity. Aldebaran b is a giant exoplanet with about 6.5 times the mass of Jupiter. It orbits at a distance about 45% farther than Earth does from the Sun. The equilibrium temperature of this planet is likely to be around , as it is strongly irradiated by"
"the hydrogen at its core. The collapse of the centre of the star into a degenerate helium core has ignited a shell of hydrogen outside the core and Aldebaran is now a red giant on the red giant branch (RGB). It has expanded to 44 times the diameter of the Sun, equivalent to approximately 61 million kilometres (see 10 gigametres for similar sizes). Measurements by the Hipparcos satellite and other sources put Aldebaran around away. Asteroseismology has determined that it is about 17% more massive than the Sun, yet it shines with 425 times the Sun's luminosity due to the"
"11th millennia, when it will be visible as far north as Germany and southern England. Achernar Achernar is the name of the primary (or 'A') component of the binary system designated Alpha Eridani (α Eridani, abbreviated Alpha Eri, α Eri), which is the brightest 'star' or point of light in, and lying at the southern tip of, the constellation of Eridanus, and the tenth-brightest in the night sky. The two components are designated Alpha Eridani A (the primary) and B (the secondary, also known informally as Achernar B). As determined by the Hipparcos astrometry satellite, it is approximately from the"
"of its proximity to the Solar System. In contrast, the other bright stars of the constellation are stars of great distance and high luminosity. At magnitude 1.5, Epsilon Canis Majoris (Adhara) is the second-brightest star of the constellation and the brightest source of extreme ultraviolet radiation in the night sky. Next in brightness are the yellow-white supergiant Delta (Wezen) at 1.8, the blue-white giant Beta (Mirzam) at 2.0, blue-white supergiants Eta (Aludra) at 2.4 and Omicron at 3.0, and white spectroscopic binary Zeta (Furud), also at 3.0. The red hypergiant VY Canis Majoris is one of the largest stars known,"
"entire multiple systems. It approved the name ""Aladfar"" for the Aa component of the triple star system (the primary component of Eta Lyrae) on 5 September 2017 and it is now so included in the List of IAU-approved Star Names. Eta Lyrae belongs to spectral class B2.5IV and has apparent magnitude of +4.40. Eta Lyrae Eta Lyrae (η Lyrae, abbreviated Eta Lyr, η Lyr) is the primary or 'A' component of a triple star system in the constellation of Lyra. It is approximately 1,390 light-years from the Sun. The secondary or 'B' component is the star BD +38 3491. Eta"
"by the weak magnetic fields in the lower atmosphere. Beyond the chromosphere of Aldebaran is an extended molecular outer atmosphere (MOLsphere) where the temperature is cool enough for molecules of gas to form. This region lies between 1.2 and 2.8 times the radius of the star, with temperatures of 1,000−2,000 K. The spectrum reveals lines of carbon monoxide, water, and titanium oxide. Past this radius, the modest outflow of the stellar wind itself declines in temperature to about 7,500 K at a distance of 1 astronomical unit (AU)−the distance of the Earth from the Sun. The wind continues to expand"
"concluded that the variation was likely to be intrinsic to the star rather than due to the gravitational effect of a companion. In 2015, a study showed stable long-term evidence for both a planetary companion and stellar activity. Aldebaran b Aldebaran b is an exoplanet orbiting the orange giant star Aldebaran, 65 light-years away. It was initially detected in 1993, but was considered doubtful until in 2015, when researchers came to a conclusion that there is likely an exoplanet orbiting Aldebaran, consistent with the original calculations, but also compatible with stellar activity. Aldebaran b is a giant exoplanet with about"
"Due to only a few observations to date, its orbit is still relatively loosely constrained. In December 2014 a slightly smaller moon, orbiting Elektra about three times closer than S/2003 (130) 1, was discovered using the SPHERE instrument on the VLT's Melipal (UT3) telescope. This second satellite has been provisionally named . 130 Elektra Elektra ( ; minor planet designation: 130 Elektra) is a very large outer main-belt asteroid. It was discovered on 17 February 1873, by astronomer Christian Peters at Litchfield Observatory, New York, and named after Electra, an avenger in Greek mythology. Its spectrum is of the G"
"the vernal equinox was close to Aldebaran. English astronomer William Herschel discovered a faint companion to Aldebaran in 1782; an 11th magnitude star at an angular separation of 117″. This star was shown to be itself a close double star by S. W. Burnham in 1888, and he discovered an additional 14th magnitude companion at an angular separation of 31″. Follow on measurements of proper motion showed that Herschel's companion was diverging from Aldebaran, and hence they were not physically connected. However, the companion discovered by Burnham had almost exactly the same proper motion as Aldebaran, suggesting that the two"
"Epsilon Lyrae Epsilon Lyrae (ε Lyr, ε Lyrae), also known as The Double Double, is a multiple star system approximately 162 light-years away in the constellation of Lyra. The widest two components of the system are easily separated when viewed through binoculars, or even with the naked eye under excellent conditions. The northern component is called ε and the southern one is called ε; they both lie around 162 light years from Earth and orbit each other. When viewed at higher magnifications, both stars of the binary can be further split into binaries; that is, the system contains two sets"
"Aquila (constellation) Aquila is a constellation on the celestial equator. Its name is Latin for 'eagle' and it represents the bird that carried Zeus/Jupiter's thunderbolts in Greco-Roman mythology. Its brightest star, Altair, is one vertex of the Summer Triangle asterism. The constellation is best seen in the northern summer, as it is located along the Milky Way. Because of this location, many clusters and nebulae are found within its borders, but they are dim and galaxies are few. Aquila was one of the 48 constellations described by the second-century astronomer Ptolemy. It had been earlier mentioned by Eudoxus in the"
"19 stars jointly in this constellation and in the now obsolete constellation of Antinous, which was named in the reign of the emperor Hadrian (AD 117–138), but sometimes erroneously attributed to Tycho Brahe, who catalogued 12 stars in Aquila and seven in Antinous. Hevelius determined 23 stars in the first and 19 in the second. The Greek Aquila is probably based on the Babylonian constellation of the Eagle, which is located in the same area as the Greek constellation. Aquila, which lies in the Milky Way, contains many rich starfields and has been the location of many novae. Two major"
"its closest alignment with the northern celestial pole around 4200 AD. Iota Cephei and Beta Cephei will stand on either side of the northern celestial pole some time around 5200 AD, before moving to closer alignment with the brighter star Alpha Cephei (""Alderamin"") around 7500 AD. Precession will then point the north celestial pole at stars in the northern constellation Cygnus. Bright first-magnitude Deneb will be within 7° of the North Pole in 10,000 AD, and third-magnitude Delta Cygni will be a pole star around 11,500 AD. Precession will then point the north celestial pole nearer the constellation Lyra, where"
"occurred on 9 July 2012, when Venus passed Aldebaran 56' northward. However, in far past and future, occultations of Aldebaran by Mercury and Venus have and will occur as result of wandering nodes. The next occultation of Aldebaran by a planet, Venus, will occur on 27 August 5366. Five faint stars are positioned so that they appear close to Aldebaran. These double stars were given alphabetic secondary star designations more or less in the order of their discovery, with the letter A reserved for the primary star. Some of the characteristics of these components, including their position relative to Aldebaran,"
"a memorable observation of the occultation of Aldebaran, the brightest star in the Taurus constellation, by the moon. Copernicus the humanist sought confirmation for his growing doubts through close reading of Greek and Latin authors (Pythagoras, Aristarchos of Samos, Cleomedes, Cicero, Pliny the Elder, Plutarch, Philolaus, Heraclides, Ecphantos, Plato), gathering, especially while at Padua, fragmentary historic information about ancient astronomical, cosmological and calendar systems. Copernicus spent the jubilee year 1500 in Rome, where he arrived with his brother Andrew that spring, doubtless to perform an apprenticeship at the Papal Curia. Here, too, however, he continued his astronomical work begun at"
"Eta Capricorni Eta Capricorni, Latinized from η Capricorni, is a binary star system in the southern constellation of Capricornus. It can be seen with the naked eye, having a combined apparent visual magnitude of +4.84. Based upon an annual parallax shift of 20.20 mas as seen from the Earth, the star is located about 161 light years from the Sun. The pair orbit each other with a period of 27.85 years, a semimajor axis of 0.265 arc seconds, an eccentricity of 0.410. The primary member, component A, is a white-hued A-type main sequence star with an apparent magnitude of +5.02."