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The question is, I think about "apparent magnitude". The question is hard to answer precisely, because there aren't eight stars of magnitude 1 exactly. There is the expression "stars of the first magnitude" which is the 21 brightest stars (in apparent magnitude).
Our Sun is not included.
Anyway, here is that list starting with Sirius, the brightest (magnitude -1.46)
down to Regulus (magnitude +1.36) :
Sirius
Canopus
Arcturus
Alpha Centauri
Vega
Capella
Rigel
Procyon
Betelgeuse
Achernar
Hadar
Altair
Acrux (Alpha Crucis)
Aldebaren
Spica
Antares
Formalhaut
Pollux
Deneb
Becrux (Beta Crucis)
Regulus.
What else can I help you with?
What effect would pollution in the atmosphere have on stars apparent magnitude?
Dust and haze in the atmosphere dims stars by one to two magnitudes, depending on location; at its worst, it was sometimes difficult even to see the Sun or Moon in Los Angeles.However, even CLEAR air dims stars by 1/2 to 1 magnitude. Look at the stars on a clear night in Kansas (elevation about 600 feet) and then travel to the high elevations of the Rocky Mountains or Montana's Bitterroot Mountains. Even when compared to perfectly clear air in the plains, the mountain stars are breathtaking in their brilliance - and number!Of course, when viewed from space, as the Hubble Space Telescope does, an additional 1 magnitude is gained. So even though the Hubble is much smaller than mountain-top telescopes here on Earth, the view from the Hubble is spectacular.
How can tell how bright a star really is?
Astronomers define star brightness in terms of apparent magnitude (how bright the star appears from Earth) and absolute magnitude (how bright the star appears at a standard distance of 32.6 light years, or 10 parsecs).
What are the release dates for Drawing with Mark - 2010 Reach for the Stars 1-1?
Drawing with Mark - 2010 Reach for the Stars 1-1 was released on: USA: 1 September 2012
What are the release dates for Cavalcade of Stars - 1949 1-36?
Cavalcade of Stars - 1949 1-36 was released on: USA: 4 February 1950
What are the release dates for Cavalcade of Stars - 1949 1-58?
Cavalcade of Stars - 1949 1-58 was released on: USA: 8 July 1950
What are 8 conspicuous stars of magnitude 1 or brighter?
Our Sun is the brightest star of course, but presuming you discount that, the next brightest are:Sirius, Canopus, Alpha Centauri, Arcturus, Vega, Capella, Rigel and Procyon.https://en.wikipedia.org/wiki/List_of_brightest_stars
The Greeks assigned what magnitude to the brightest stars seen in the night sky?
The brightest stars were traditionally magnitude 1; the weakest that could still be seen with the naked eye, 6. This system has been formalized and refined; as a result, there are now not only magnitudes with decimals, but also negative magnitudes for the very brightest stars and planets. For example, Venus has a magnitude of approximately minus 4.
What is the absolute magnitude of beta 1?
Impossible to answer as there a thousands of stars designated beta 1.
What is a second magnitude star?
A second magnitude star is a star that is relatively bright in the night sky, typically with an apparent visual magnitude between 1.5 and 2.5. These stars are easily visible to the naked eye and are brighter than third magnitude stars but dimmer than first magnitude stars.
How is stars brightness measured from earth?
Astronomers use a special term to talk about the brightness of stars. The term is "magnitude". The magnitude scale was invented by the ancient Greeksaround 150 B.C. The Greeks put the stars they could see into six groups. They put the brightest stars into group 1, and called them magnitude 1 stars. Stars that they could barely see were put into group 6. So, in the magnitude scale, bright stars have lower numbers.
Are the brightest stars low or high magnitude?
The brightest stars have a low magnitude. Magnitude is measured on a logarithmic scale where lower numbers indicate brighter objects. The brightest star in the night sky, Sirius, has a magnitude of -1.46.
The unaided eye can perceive stars of what magnitude?
The unaided eye can typically perceive stars with a magnitude range from about +6 (faintest visible to the naked eye) to -1 or 0 (brightest stars like Sirius). This covers the range from dimmer stars to the brightest stars visible without the use of binoculars or telescopes.
How would you compare the brightness of Polaris with that of other stars in the sky?
Stars' brightness is measured by their magnitudes. There are first-magnitude stars which are the bright ones, down to 6th magnitude which is the faintest that can be seen with perfect eyesight on perfectly clear nights. Within that you can have stars with fractional magnitudes, for example magnitude 3.5 is half a magnitude fainter than magnitude 3. There are also negative magnitudes for the few brightest stars that are brighter than magnitude 0. The scale is logarithmic, with a difference of 5 magnitudes equal to a difference of 100 in brightness. Each magnitude is a ratio of 100^(1/5) which is equal to 2.512. Polaris has a magnitude of 2.02 and is less than a degree from being exactly in line with the Earth's north and south poles, which means when you look at it you are always facing north, to better than 1 degree.
The brightness of stars as they appear from Earth is measured by magnitude?
Stars are measured in brilliance called magnitude. The faintest stars visible to the naked eye are mag.6. Brighter ones are mag. 1 or 2, the even brighter stars have negative magnitude. So its like a number line in math: Brighter Fainter -6_-5_-4_-3_-2_-1__0__1_2_3_4_5_6
What is the definition of conspicuous?
Easy to see, obvious, standing out Answer Conspicuous has 2 meanings: 1. (adjective) Something that is obvious (either to the eye or mind): Her jealousy was conspicuous. 2. (adjective) With no attempt to conceal: He had a conspicuous disrespect for the law.
What does a magnitude mean?
There are two main meanings of magnitude. One is the absolute value. In this context, the magnitude of the number is its size, irrespective of the sign. So, the magnitude of -4 is the same as the magnitude of 4. The other is in the sense of the order of magnitude. This is usually used when the measurement scale is logarithmic. The apparent brightness of stars, for example is expressed in magnitude. Brightest stars = magnitude 1. Stars half as bright = mag 2, quarter as bright = mag 3 etc. Or [deci]bel for the loudness of sound. Incidentally, the Richter scale, for measuring the strength of earthquakes is not a systematic measure in this sense. The measure is largely based on the effects of the quake at the surface.
What things must an astronomer measure to calculate a star's absolute brightness?
Telescopes, combined with spectroscopy are used for the colors. The apparent brightness can be measured using a telescope with a special "CCD camera". To measure the "real" brightness ("absolute magnitude") you also need to be able to work out the distance to the star.
