what is the absolute magnitude of altair
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- Altair or Alpha Aquilae (Alp Aql) is the brightest naked eye star in the constellation Aquila. With an apparent magnitude of 0.76v, Altair is the 12th brightest star in the entire sky (see: 50 Brightest Stars). Its absolute magnitude is 2.2 and its distance is 16.8 light years. The Equinox J2000 equatorial coordinates are RA = 19h 50m 47.0s, Dec = +08° 52' 06. Altair has a spectral type of A7V, a surface temperature of 7500° Kelvin and a luminosity 10.6 times the Sun.
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- Because apparent magnitude is the brightness of a star, as seen from Earth, whereas absolute magnitude is the brightness of a star as seen from the same distance-about 32.6 light years away.  Absolute magnitude is the brightness of an object as seen from a predete … rmined distance, depending on the object.    For planets, the distance used is 1 AU (Astronomical Units). Stars and galaxies use 10 parsecs which is about 32.616 light years.
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- ADT (03:36 3/28 UTC) a great earthquake of magnitude 9.2 (moment magnitude) occurred in Prince William Sound region of Alaska. The epicenter was about 10 km east of the mouth of College Fiord, approximately 90 km west of Valdez and 120 km east of Anchorage.The epicenter was located at Lat. 61.04N, Lon.he plateau on the right side of this picture is the original beach. The vertical uplift due to the 1964 earthquake was 3.6 meters. Much of the damage and most of the lives lost were due to the effects of water waves.
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Using the Magnitude Scale to Compare Star Brightness The apparent brightness of a star as seen from Earth, expressed using the magnitude scale, is known as apparent visual magnitude. The larger the magnitude, the fainter the star. You must remember that this magnitude scale only takes visible light into account.
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Uluru Facts Uluru…. 1  is 348 metres (1141 feet) high. 2  rises 863 metres (2,831 ft) above sea level. 3  is 3.6 km long (2.2 miles)  is 1.9 km wide (1.2 1  miles) is 9.4 km or 5.8 miles around the base.  covers 3.33 km2 (1.29 1  miles2) extends about several km/miles into the ground (no-one knows exactly how  far)
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- Hamal is the brightest star in the constellation Aries and the 48th brightest star in the night sky. It is a K-type orange giant about twice as massive as the Sun, with an apparent visual magnitude varying between 1.98 and 2.04.The star is 66 light years distant.GC 772, or Arp 78, is an unbarred spiral galaxy in Aries. It is located about 130 light years from Earth and has an apparent magnitude of 11.3. The galaxy lies southeast of Beta Arietis. Two supernovae were discovered in the galaxy, SN 2003 hl and SN 2993 iq.
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- , p. 31) states: The magnitude of a shock is defined as the logarithm of the calculated maximum trace amplitude, expressed in microns, with which the standard short-period torsion seismometer (T o = 0.8, V = 2,800, h = 0.8) would register that shock at an epicentral distance of 100 km.
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Finding Your Way Around The Sky 1 The nearest star beyond the Sun, Alpha Centauri, has a magnitude of zero. 2  Sirius, the brightest star besides the sun, has a magnitude of -1.4. 3  Venus at its brightest has a magnitude of -4.  A crescent Moon is about magnitude -8, the full Moon about -12.
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Absolute Magnitude To convert the observed brightness of a star (the apparent magnitude, m) to an absolute magnitude, we need to know the distance, d, to the star. Alternatively, if we know the distance and the apparent magnitude of a star, we can calculate its absolute magnitude.
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- Altair Semiconductor, the world's leading developer of ultra-low power, small footprint and high performance 4G LTE chipsets, announced today that its FourGee LTE chipset, integrated in a commercial USB dongle, was used in Softbank Mobile's 4G press conference AXGP demonstration conducted in Japan on September 29.
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9,096 Stars in the SkyâIs That All? Altair, in Aquila the Eagle, shines at about magnitude +1 which is 2.5 times brighter than a 2nd magnitude star, which is 2.5 times brighter than a 3rd magnitude star, and so on. A first magnitude star is 2.5 x 2.5 x 2.5 x 2.5 x 2.5 (about 100) times brighter than a 6th magnitude star.
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Canis Major At magnitude 1.5, it is the second-brightest star in Canis Major and the 23rd-brightest star in the sky. It is a blue-white supergiant of spectral type B2Iab, around 404 light-years from Earth. This star is one of the brightest known extreme ultraviolet sources in the sky.anis Major /ˌkeɪnɨs ˈmeɪdʒər/ is a constellation in the southern celestial hemisphere. In the second century, it was included in Ptolemy 's 48 constellations, and is counted among the 88 modern constellations.
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Magnitude/Intensity The magnitude that is derived from waveform modeling is called the Moment magnitude, and it is in some ways the most precise estimate of earthquake size--and the only one applicable to great earthquakes M>8.
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Apparent magnitude As it turns out, the eye senses brightness logarithmically, so each increase in 5 magnitudes corresponds to a decrease in brightness by a factor 100. The absolute magnitude is the magnitude the stars would have if viewed from a distance of 10 parsecs or some 32.6 light years.
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- The apparent magnitude is the brightness of a star as observed from Earth, and is useful for comparing stars from our perspective. Whereas, absolute magnitude is the brightnes … s as if it were measured 10 parsecs away.  Absolute magnitude is the brightness of an object as seen from a predete … rmined distance, depending on the object.    For planets, the distance used is 1 AU (Astronomical Units). Stars and galaxies use 10 parsecs which is about 32.616 light years.
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Apparent magnitudes and absolute magnitudes The basic formula relating the apparent (m) and absolute (M} magnitudes then is. where D is the distance to the object in pc. Consider that we already know that the Sun has m = -26.8, and it is located at 1 A.U. ( astronomical unit) from us. The sun has a luminosity of 1 solar luminosity Lsun = 3.9 x 1033 erg s-1.
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Brightest Stars: Luminosity & Magnitude Using this scale, astronomers now define five magnitudes' difference as having a brightness ratio of 100. Vega was used as the reference star for the scale. Initially it had a magnitude of 0, but more precise instrumentation changed that to 0.3.
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Star Large lengths, such as the radius of a giant star or the semi-major axis of a binary star system, are often expressed in terms of the astronomical unit —approximately equal to the mean distance between the Earth and the Sun (150 million km or 93 million miles).s of 2006, the star with the highest known absolute magnitude is LBV 1806-20, with a magnitude of −14.2. This star is at least 5,000,000 times more luminous than the Sun. The least luminous stars that are currently known are located in the NGC 6397 cluster.
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Stellar Magnitude: Understanding the Brightness of Stars and Planets For numerical convenience, an object brighter than 0th magnitude has a negative magnitude; the brightest star, Sirius is magnitude -1.4; the full moon is magnitude -13, and the Sun is a blazing -26th magnitude.
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magnitude ◇ The brightness of a celestial body computed as if viewed from a distance of 10 parsecs (32.6 light-years) is called its absolute magnitude. Absolute magnitude measures the intrinsic brightness of a celestial object rather than how bright it appears on Earth, using the same logarithmic scale as for apparent magnitude.
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The Stellar Magnitude System The right-hand version indicates the same stars' absolute magnitudes  how bright they would appear if they were all placed at the same distance (32.6 light-years) from Earth. Absolute magnitude is a measure of true stellar luminosity.
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Apparent magnitude The brighter an object appears, the lower its magnitude value (i.e. inverse relation). In addition, the magnitude scale is logarithmic: a difference of one in magnitude corresponds to a change in brightness by a factor of about 2.5. Generally, the visible spectrum (vmag) is used as a basis for the apparent magnitude. However, other spectra are also used (e.g. the near-infrared J-band).
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- ―Altair altaïr to his Son darim during The mongol attack On, masyaf. 1257 Altair-Altaïr'Ibn (la – ahad) 1165 1257 Was-a syrian born member Of The levantine Brotherhood of assassins and served As their mentor from 1191 until his death. in 1257
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Magnitude (astronomy) The apparent magnitude (m, or vmag for the visible spectrum) is the brightness of an object as it appears in the night sky from Earth, while the absolute magnitude (Mv, V and H) describes the intrinsic brightness of an object as it would appear if it were placed at a certain distance from Earth.
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Astronomical Magnitude Systems This magnitude system is defined such that, when monochromatic flux f_nu is measured in erg sec^-1 cm^-2 Hz^-1, m(AB) = -2.5 log(f_nu) - 48.60 where the value of the constant is selected to define m(AB)=V for a flat-spectrum source.