Apparent Magnitude

The apparent magnitude (m) of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere. The brighter the object appears, the lower the value of its magnitude. Generally the visible spectrum (vmag) is used for the apparent magnitude, but other spectrums such as the near-infrared J-band magnitude are also used. In the visible spectrum Sirius is the brightest star in the night sky, while in the near-infrared J-band, Betelgeuse is the brightest star in the night sky.

Read more about Apparent MagnitudeHistory, Table of Notable Celestial Objects, Calculations, Standard Reference Values

Other articles related to "apparent magnitude, magnitudes, magnitude":

List Of Supernovae - List
... Supernova designation (year) Constellation Apparent magnitude Distance (light years) Type Galaxy Comments SN 185 Centaurus −4 (?) 8,200 Ia (?) Milky ... Milky Way Widely observed on Earth in apparent magnitude, the brightest stellar event in recorded history ...
Apparent Magnitude - Standard Reference Values - Addition
... It is sometimes also necessary to add magnitudes, for example, to determine the combined magnitude of a double star when the magnitude of the individual components are known ... This can be done by setting an equation using the brightness (in linear units) of each magnitude ... Note that the negative of each magnitude is used because greater intensities equate to lower magnitudes ...
Pi Ursae Minoris - π² Ursae Minoris
15h 39m 38.72s Declination +79° 58' 59.2" Apparent magnitude +6.89 Distance 384 ± 42 ly (118 ± 13 pc) Spectral type F2 Other designations HD 141652, BD+80 487, HIP 76695 ... The primary component, Pi-2 Ursae Minoris A, is a yellow-white F-type star with an apparent magnitude of +6.89 ... The companion star, Pi-2 Ursae Minoris B, has an apparent magnitude of +8.3 and is 0.67 arcseconds from the primary ...
Sigma Cassiopeiae
... It is approximately 1520 light years from Earth and is a combined apparent magnitude of +4.88 ... The primary component, σ Cassiopeiae A, is a blue-white B-type giant with an apparent magnitude of +5.0 ... Its companion, σ Cassiopeiae B, is a blue-white B-type main sequence dwarf, with an apparent magnitude of +7.1 ...
Lambda Sculptoris - λ¹ Sculptoris
... ascension 00h 42m 42.9s Declination -38° 27' 48" Apparent magnitude +6.05 Distance 432 ± 70 ly (132 ± 21 pc) Spectral type B9.5V + A9 Other designations HR 185, HD 4065, SAO ... B-type main sequence dwarf with an apparent magnitude of +6.7 ... The companion is an A-type star with an apparent magnitude of +7.0 ...

Famous quotes containing the words magnitude and/or apparent:

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    Percy Bysshe Shelley (1792–1822)

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    —H.L. (Henry Lewis)