<P> For objects within the Milky Way with a given absolute magnitude, 5 is added to the apparent magnitude for every tenfold increase in the distance to the object . For objects at very great distances (far beyond the Milky Way), this relationship must be adjusted for redshifts and for non-Euclidean distance measures due to general relativity . </P> <P> For planets and other Solar System bodies the apparent magnitude is derived from its phase curve and the distances to the Sun and observer . </P> <Table> Apparent visual magnitudes of known celestial objects <Tr> <Th> App . mag . (V) </Th> <Th> Celestial object...</Th> <Th>... as seen from </Th> </Tr> <Tr> <Td> − 67.57 </Td> <Td> gamma - ray burst GRB 080319B </Td> <Td> as seen from 1 AU . </Td> </Tr> <Tr> <Td> − 40.07 </Td> <Td> star Zeta1 Scorpii </Td> <Td> as seen from 1 AU . </Td> </Tr> <Tr> <Td> − 38.00 </Td> <Td> star Rigel </Td> <Td> as seen from 1 AU . It would be seen as a large very bright bluish disk of 35 ° apparent diameter . </Td> </Tr> <Tr> <Td> − 30.30 </Td> <Td> star Sirius </Td> <Td> as seen from 1 AU . </Td> </Tr> <Tr> <Td> − 29.30 </Td> <Td> star Sun </Td> <Td> as seen from Mercury at perihelion </Td> </Tr> <Tr> <Td> − 27.40 </Td> <Td> star Sun </Td> <Td> as seen from Venus at perihelion </Td> </Tr> <Tr> <Td> − 26.74 </Td> <Td> star Sun </Td> <Td> as seen from Earth (about 400,000 times brighter than mean full moon) </Td> </Tr> <Tr> <Td> − 25.60 </Td> <Td> star Sun </Td> <Td> as seen from Mars at aphelion </Td> </Tr> <Tr> <Td> − 25.00 </Td> <Td_colspan="2"> Minimum brightness that causes the typical eye slight pain to look at </Td> </Tr> <Tr> <Td> − 23.00 </Td> <Td> star Sun </Td> <Td> as seen from Jupiter at aphelion </Td> </Tr> <Tr> <Td> − 21.70 </Td> <Td> star Sun </Td> <Td> as seen from Saturn at aphelion </Td> </Tr> <Tr> <Td> − 20.20 </Td> <Td> star Sun </Td> <Td> as seen from Uranus at aphelion </Td> </Tr> <Tr> <Td> − 19.30 </Td> <Td> star Sun </Td> <Td> as seen from Neptune </Td> </Tr> <Tr> <Td> − 18.20 </Td> <Td> star Sun </Td> <Td> as seen from Pluto at aphelion </Td> </Tr> <Tr> <Td> − 16.70 </Td> <Td> star Sun </Td> <Td> as seen from Eris at aphelion </Td> </Tr> <Tr> <Td> − 14.20 </Td> <Td_colspan="2"> An illumination level of 1 lux </Td> </Tr> <Tr> <Td> − 12.90 </Td> <Td> full moon </Td> <Td> maximum brightness of perigee + perihelion full moon (mean distance value is − 12.74, though both values are about 0.18 magnitude brighter when including the opposition effect) </Td> </Tr> <Tr> <Td> − 11.20 </Td> <Td> star Sun </Td> <Td> as seen from Sedna at aphelion </Td> </Tr> <Tr> <Td> − 10.00 </Td> <Td> Comet Ikeya--Seki (1965) </Td> <Td> which was the brightest Kreutz Sungrazer of modern times </Td> </Tr> <Tr> <Td> 0 − 9.50 </Td> <Td> Iridium (satellite) flare </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 0 − 7.50 </Td> <Td> supernova of 1006 </Td> <Td> the brightest stellar event in recorded history (7200 light - years away) </Td> </Tr> <Tr> <Td> 0 − 6.50 </Td> <Td> The total integrated magnitude of the night sky </Td> <Td> as seen from Earth </Td> </Tr> <Tr> <Td> 0 − 6.00 </Td> <Td> Crab Supernova of 1054 </Td> <Td> (6500 light - years away) </Td> </Tr> <Tr> <Td> 0 − 5.90 </Td> <Td> International Space Station </Td> <Td> when the ISS is at its perigee and fully lit by the Sun </Td> </Tr> <Tr> <Td> 0 − 4.89 </Td> <Td> planet Venus </Td> <Td> maximum brightness when illuminated as a crescent </Td> </Tr> <Tr> <Td> 0 − 4 </Td> <Td_colspan="2"> Faintest objects observable during the day with naked eye when Sun is high </Td> </Tr> <Tr> <Td> 0 − 3.99 </Td> <Td> star Epsilon Canis Majoris </Td> <Td> maximum brightness of 4.7 million years ago, the historical brightest star of the last and next five million years </Td> </Tr> <Tr> <Td> 0 − 3.82 </Td> <Td> planet Venus </Td> <Td> minimum brightness when it is on the far side of the Sun </Td> </Tr> <Tr> <Td> 0 − 2.94 </Td> <Td> planet Jupiter </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 0 − 2.91 </Td> <Td> planet Mars </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 0 − 2.5 </Td> <Td_colspan="2"> Faintest objects visible during the day with naked eye when Sun is less than 10 ° above the horizon </Td> </Tr> <Tr> <Td> 0 − 2.50 </Td> <Td> new moon </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 0 − 2.45 </Td> <Td> planet Mercury </Td> <Td> maximum brightness at superior conjunction (unlike Venus, Mercury is at its brightest when on the far side of the Sun, the reason being their different phase curves) </Td> </Tr> <Tr> <Td> 0 − 1.61 </Td> <Td> planet Jupiter </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 0 − 1.47 </Td> <Td> star Sirius </Td> <Td> Brightest star (except for the Sun) at visible wavelengths </Td> </Tr> <Tr> <Td> 0 − 0.83 </Td> <Td> star Eta Carinae </Td> <Td> apparent brightness as a supernova impostor in April 1843 </Td> </Tr> <Tr> <Td> 0 − 0.72 </Td> <Td> star Canopus </Td> <Td> 2nd brightest star </Td> </Tr> <Tr> <Td> 0 − 0.49 </Td> <Td> planet Saturn </Td> <Td> maximum brightness at opposition and perihelion when the rings are full open (2003) </Td> </Tr> <Tr> <Td> 0 − 0.3 </Td> <Td> Halley's comet </Td> <Td> Expected apparent magnitude at 2061 passage </Td> </Tr> <Tr> <Td> 0 − 0.27 </Td> <Td> star system Alpha Centauri AB </Td> <Td> The total magnitude (3rd brightest star to the naked eye) </Td> </Tr> <Tr> <Td> 0 − 0.04 </Td> <Td> star Arcturus </Td> <Td> 4th brightest star to the naked eye </Td> </Tr> <Tr> <Td> 0 − 0.01 </Td> <Td> star Alpha Centauri A </Td> <Td> 4th brightest individual star visible telescopically in the sky </Td> </Tr> <Tr> <Td> 0 + 0.03 </Td> <Td> star Vega </Td> <Td> which was originally chosen as a definition of the zero point </Td> </Tr> <Tr> <Td> 0 + 0.50 </Td> <Td> star Sun </Td> <Td> as seen from Alpha Centauri </Td> </Tr> <Tr> <Td> 0 + 1.47 </Td> <Td> planet Saturn </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 0 + 1.84 </Td> <Td> planet Mars </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 0 + 3.03 </Td> <Td> supernova SN 1987A </Td> <Td> in the Large Magellanic Cloud (160,000 light - years away) </Td> </Tr> <Tr> <Td> 0 3...4 </Td> <Td_colspan="2"> Faintest stars visible in an urban neighborhood with naked eye </Td> </Tr> <Tr> <Td> 00 3.44 </Td> <Td> Andromeda Galaxy </Td> <Td> M31 </Td> </Tr> <Tr> <Td> 00 4.38 </Td> <Td> moon Ganymede </Td> <Td> maximum brightness (moon of Jupiter and the largest moon in the Solar System) </Td> </Tr> <Tr> <Td> 00 4.50 </Td> <Td> open cluster M41 </Td> <Td> an open cluster that may have been seen by Aristotle </Td> </Tr> <Tr> <Td> 00 5.20 </Td> <Td> asteroid Vesta </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 5.32 </Td> <Td> planet Uranus </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 5.72 </Td> <Td> spiral galaxy M33 </Td> <Td> which is used as a test for naked eye seeing under dark skies </Td> </Tr> <Tr> <Td> 00 5.73 </Td> <Td> planet Mercury </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 00 5.8 </Td> <Td> gamma - ray burst GRB 080319B </Td> <Td> Peak visual magnitude (the "Clarke Event") seen on Earth on March 19, 2008 from a distance of 7.5 billion light - years . </Td> </Tr> <Tr> <Td> 00 5.95 </Td> <Td> planet Uranus </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 00 6.49 </Td> <Td> asteroid Pallas </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 6.5 </Td> <Td_colspan="2"> Approximate limit of stars observed by a mean naked eye observer under very good conditions . There are about 9,500 stars visible to mag 6.5 . </Td> </Tr> <Tr> <Td> 00 6.64 </Td> <Td> dwarf planet Ceres </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 6.75 </Td> <Td> asteroid Iris </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 6.90 </Td> <Td> spiral galaxy M81 </Td> <Td> This is an extreme naked - eyetarget that pushes human eyesight and the Bortle scale to the limit </Td> </Tr> <Tr> <Td> 0 7...8 </Td> <Td_colspan="2"> Extreme naked - eye limit, Class 1 on Bortle scale, the darkest skies available on Earth </Td> </Tr> <Tr> <Td> 00 7.78 </Td> <Td> planet Neptune </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 8.02 </Td> <Td> planet Neptune </Td> <Td> minimum brightness </Td> </Tr> <Tr> <Td> 00 8.10 </Td> <Td> moon Titan </Td> <Td> maximum brightness of largest moon of Saturn mean opposition magnitude 8.4 </Td> </Tr> <Tr> <Td> 00 8.94 </Td> <Td> asteroid 10 Hygiea </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 00 9.50 </Td> <Td_colspan="2"> Faintest objects visible using common 7 × 50 binoculars under typical conditions </Td> </Tr> <Tr> <Td> 010.20 </Td> <Td> moon Iapetus </Td> <Td> maximum brightness, brightest when west of Saturn and takes 40 days to switch sides </Td> </Tr> <Tr> <Td> 012.91 </Td> <Td> quasar 3C 273 </Td> <Td> brightest (luminosity distance of 2.4 billion light - years) </Td> </Tr> <Tr> <Td> 013.42 </Td> <Td> moon Triton </Td> <Td> Maximum brightness </Td> </Tr> <Tr> <Td> 013.65 </Td> <Td> dwarf planet Pluto </Td> <Td> maximum brightness, 725 times fainter than magnitude 6.5 naked eye skies </Td> </Tr> <Tr> <Td> 015.4 </Td> <Td> centaur Chiron </Td> <Td> maximum brightness </Td> </Tr> <Tr> <Td> 015.55 </Td> <Td> moon Charon </Td> <Td> maximum brightness (the large moon of Pluto) </Td> </Tr> <Tr> <Td> 016.8 </Td> <Td> dwarf planet Makemake </Td> <Td> Current opposition brightness </Td> </Tr> <Tr> <Td> 017.27 </Td> <Td> dwarf planet Haumea </Td> <Td> Current opposition brightness of </Td> </Tr> <Tr> <Td> 018.7 </Td> <Td> dwarf planet Eris </Td> <Td> Current opposition brightness </Td> </Tr> <Tr> <Td> 020.7 </Td> <Td> moon Callirrhoe </Td> <Td> (small ~ 8 km satellite of Jupiter) </Td> </Tr> <Tr> <Td> 022 </Td> <Td_colspan="2"> Faintest objects observable in visible light with a 600 mm (24") Ritchey - Chrétien telescope with 30 minutes of stacked images (6 subframes at 5 minutes each) using a CCD detector </Td> </Tr> <Tr> <Td> 022.91 </Td> <Td> moon Hydra </Td> <Td> maximum brightness of Pluto's moon </Td> </Tr> <Tr> <Td> 023.38 </Td> <Td> moon Nix </Td> <Td> maximum brightness of Pluto's moon </Td> </Tr> <Tr> <Td> 025.0 </Td> <Td> moon Fenrir </Td> <Td> (small ~ 4 km satellite of Saturn) </Td> </Tr> <Tr> <Td> 027.6 </Td> <Td> planet Jupiter </Td> <Td> if it were located 5,000 AU (750 billion km) from the Sun </Td> </Tr> <Tr> <Td> 027.7 </Td> <Td_colspan="2"> Faintest objects observable with an 8 - meter class ground - based telescope such as the Subaru Telescope in a 10 - hour image </Td> </Tr> <Tr> <Td> 028.2 </Td> <Td> Halley's Comet </Td> <Td> in 2003 when it was 28 AU from the Sun </Td> </Tr> <Tr> <Td> 028.4 </Td> <Td> asteroid 2003 BH 91 </Td> <Td> observed magnitude of ~ 15 - kilometer Kuiper belt object Seen by the Hubble Space Telescope (HST) in 2003, dimmest known directly - observed asteroid . </Td> </Tr> <Tr> <Td> 031.5 </Td> <Td_colspan="2"> Faintest objects observable in visible light with Hubble Space Telescope </Td> </Tr> <Tr> <Td> 034 </Td> <Td_colspan="2"> Faintest objects observable in visible light with James Webb Space Telescope </Td> </Tr> <Tr> <Td> 035 </Td> <Td> unnamed asteroid </Td> <Td> expected magnitude of dimmest known asteroid, a 950 - meter Kuiper belt object discovered by the HST passing in front of a star in 2009 . </Td> </Tr> <Tr> <Td> 035 </Td> <Td> star LBV 1806 - 20 </Td> <Td> a luminous blue variable star, expected magnitude at visible wavelengths due to interstellar extinction </Td> </Tr> <Tr> <Td_colspan="3"> See also: List of brightest stars </Td> </Tr> </Table> <Tr> <Th> App . mag . (V) </Th> <Th> Celestial object...</Th> <Th>... as seen from </Th> </Tr>

Brightest objects in the sky except sun and moon
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