The Andromeda Galaxy has an apparent magnitude of +3.44
Mercury is about one fifth as bright as the faintest star visible to the naked eye from Earth.
uranus, though it can be barely seen from the naked eye.Neptune is too dim to see with the naked eye, but people with good eyes who know where to look can spot Uranus on a clear dark night (at its brightest it has an apparent magnitude of around 5.5).Saturn.Uranus should be visible for those with exceptional eyesight in areas with exceptionally dark skies as its maximum apparent magnitude is 5.32 and the faintest objects are those with apparent brightness around 7. Neptune never geta brighter than 7.78.
Saiph, a star in the constellation of Orion, has an apparent magnitude of around 2.09. It is one of the brighter stars in the constellation and can be seen with the naked eye.
The apparent magnitude of Arcturus is approximately -0.04, making it one of the brightest stars in the sky. This makes Arcturus visible to the naked eye and a prominent object in the northern hemisphere during certain times of the year.
Yes, but only if the conditions are right. 51 Pegasi has an apparent magnitude [See Link] of 5.49. The faintest object the naked eye can see, has an apparent magnitude of 6.5 (in perfect conditions). Even with binoculars, the faintest object is 9.5. The larger the apparent magnitude, the dimmer the object is. Our Sun has an apparent magnitude of -26.73 (yes minus)
Not very. The brightest star Alpha Phoenicis [See Link] has an Apparent Magnitude [See Link] of only 2.6. For reference. The brighter an object appears, the lower the value of its magnitude. Apparent Magnitude -12.6 (Yes negative) = The brightness of a full moon. Apparent Magnitude 3 = Faintest stars visible in an urban neighborhood with the naked eye.
Just barely glowing a dull brown. Without a telescope most people in urban areas can see stars of apparent magnitude 4. The limit of naked eye obseervations lies close to magnitude 6.8.
The Andromeda Galaxy has an apparent magnitude of +3.44
Apparent magnitude: +2.9Absolute magnitude: -0.7See related question.
Mercury is about one fifth as bright as the faintest star visible to the naked eye from Earth.
uranus, though it can be barely seen from the naked eye.Neptune is too dim to see with the naked eye, but people with good eyes who know where to look can spot Uranus on a clear dark night (at its brightest it has an apparent magnitude of around 5.5).Saturn.Uranus should be visible for those with exceptional eyesight in areas with exceptionally dark skies as its maximum apparent magnitude is 5.32 and the faintest objects are those with apparent brightness around 7. Neptune never geta brighter than 7.78.
The amount of light, or brightness, of a star is measured by it magnitude - the lower the magnitude the brighter the object. The following gives an idea of the range when measured in visible light: The sun (as viewed from Earth) is at a magnitude of -26.73The darkest object visible to the naked eye (under very dark conditions) is at around magnitude 7.7The faintest visible object that can be seen by the Hubble Space Telescope is around magnitude 31.
Saiph, a star in the constellation of Orion, has an apparent magnitude of around 2.09. It is one of the brighter stars in the constellation and can be seen with the naked eye.
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.
Under ideal conditions, the limit is about 6m. That's how the "m" was originally defined - 1m for the brightest stars, 6m for the faintest that could be seen with the naked eye. (However, with the modern definition, the brightest stars have an apparent magnitude of less than 1m - even negative magnitudes.)
The apparent magnitude of Arcturus is approximately -0.04, making it one of the brightest stars in the sky. This makes Arcturus visible to the naked eye and a prominent object in the northern hemisphere during certain times of the year.