Editing Apparent magnitude (section)

==List of apparent magnitudes==
{{more citations needed section|date=September 2019}}
{{See also|List of brightest stars}}

Some of the listed magnitudes are approximate. Telescope sensitivity depends on observing time, optical bandpass, and interfering light from [[Rayleigh scattering|scattering]] and [[airglow]].

{| class="wikitable"
|+Apparent visual magnitudes of celestial objects
! Apparent<br />magnitude<br />(V)
! width="215px" | Object
! Seen from...
!Notes
|-
|−67.57
|[[gamma-ray burst]] [[GRB 080319B]]
|seen from 1&nbsp;[[Astronomical unit|AU]] away
|would be over {{Val|2e16}} (20 quadrillion) times as bright as the Sun when seen from the Earth
|-
|−43.27
|star [[NGC 2403 V14]]
|seen from 1 AU away
|
|-
|−41.82
|star [[NGC 2363-V1]]
|seen from 1 AU away
|
|-
|−41.39
|star [[Cygnus OB2-12]]
|seen from 1 AU away
|
|-
|−40.67
|star [[M33-013406.63]]
|seen from 1 AU away
|
|-
|−40.17
|star [[Eta Carinae|η Carinae]] A
|seen from 1 AU away
|
|-
| −40.07 || star [[Zeta1 Scorpii|Zeta<sup>1</sup> Scorpii]] || seen from 1&nbsp;AU away
|
|-
| −39.66 || star [[R136a1]] || seen from 1&nbsp;AU away
|
|-
|−39.47
|star [[P Cygni]]
|seen from 1 AU away
|
|-
| −38.00 || star [[Rigel]] || seen from 1&nbsp;AU away
|would be seen as a large, very bright bluish disk of 35° apparent diameter
|-
|−37.42
|star [[Betelgeuse]]
|seen from 1&nbsp;AU away
|
|-
| −30.30 || star [[Sirius]] A || seen from 1&nbsp;AU away
|
|-
| −29.30 || star [[Sun]] || seen from [[Mercury (planet)|Mercury]] at [[perihelion]]
|
|-
| −27.40 || star Sun || seen from [[Venus]] at perihelion
|
|-
| −26.83|| star Sun || seen from [[Earth]]<ref name="IAU2015B2"/>
|about 400,000 times as bright as mean full Moon
|-
| −25.60 || star Sun || seen from [[Mars]] at [[aphelion]]
|
|-
| −25 || colspan="3" style="background-color:#EEE;" | ''Minimum brightness that causes the typical eye slight pain to look at''
|-
| −23.00 || star Sun || seen from [[Jupiter]] at aphelion
|
|-
| −21.70 || star Sun || seen from [[Saturn]] at aphelion
|
|-
| −21.00 || star Sun || seen from Earth on an overcast midday
|measuring about 1000 lux
|-
| −20.20 || star Sun || seen from [[Uranus]] at aphelion
|
|-
| −19.30 || star Sun || seen from [[Neptune]]
|
|-
| −19.00 || star Sun || seen from Earth on a very strongly overcast midday
|measuring about 100 lux
|-
| −18.20 || star Sun || seen from [[Pluto]] at aphelion
|
|-
| −17.70 || planet Earth || seen fully illuminated as [[earthlight (astronomy)|earthlight]] from the [[Moon]]<ref name="Agrawal">{{cite journal | last=Agrawal | first=Dulli Chandra | title=Apparent magnitude of earthshine: a simple calculation | journal=European Journal of Physics | publisher=IOP Publishing | volume=37 | issue=3 | date=30 March 2016 | issn=0143-0807 | doi=10.1088/0143-0807/37/3/035601 | page=035601| bibcode=2016EJPh...37c5601A | s2cid=124231299 }}</ref>
|
|-
| −16.70 || star Sun || seen from [[Eris (dwarf planet)|Eris]] at aphelion
|
|-
| −16.00 || star Sun || as [[twilight]] on Earth
|measuring about 10 lux<ref name="Polakis 1997 a712">{{cite web | last=Polakis | first=Tom | title=Radiometry and photometry in astronomy | website=Home page of Paul Schlyter | date=1997-09-10 | url=https://stjarnhimlen.se/comp/radfaq.html#11 | access-date=2024-04-25}}</ref>
|-
| −14.2 || colspan="3" style="background-color:#EEE;" | ''An illumination level of 1 [[lux]]''<ref>{{cite book|url=https://books.google.com/books?id=oTraksy4JYkC&pg=PA4|title=Introduction to Astrophysics: The Stars|first=Jean|last=Dufay|page=3|isbn=978-0-486-60771-9|date=17 October 2012|publisher=Courier Corporation |access-date=28 February 2016|archive-url=https://web.archive.org/web/20170324070545/https://books.google.com/books?id=oTraksy4JYkC&pg=PA4|archive-date=24 March 2017|url-status=live}}</ref><ref name =IM08>{{cite book|first=Ian S.|last=McLean|title=Electronic Imaging in Astronomy: Detectors and Instrumentation|publisher=Springer|date=2008|isbn=978-3-540-76582-0|page=529}}</ref>
|-
| −12.60 || [[full moon]] || seen from Earth at perihelion
|maximum brightness of perigee + perihelion + full Moon (~0.267 lux; mean distance value is −12.74,<ref name="moon-fact" /> though values are about 0.18 magnitude brighter when including the [[Opposition surge|opposition effect]])
|-
| −12.40 || [[Betelgeuse]] (when supernova)|| seen from Earth when it goes supernova<ref>{{Cite journal | doi=10.3847/0004-637X/819/1/7| arxiv=1406.3143| bibcode=2016ApJ...819....7D| title=Evolutionary Tracks for Betelgeuse| year=2017| last1=Dolan| first1=Michelle M.| last2=Mathews| first2=Grant J.| last3=Lam| first3=Doan Duc| last4=Lan| first4=Nguyen Quynh| last5=Herczeg| first5=Gregory J.| last6=Dearborn| first6=David S. P.| journal=The Astrophysical Journal| volume=819| issue=1| page=7| s2cid=37913442| doi-access=free}}</ref>
|
|-
| −11.20 || star Sun || seen from [[90377 Sedna|Sedna]] at aphelion
|
|-
| −10.00 || Comet [[Comet Ikeya–Seki|Ikeya–Seki]] (1965) || seen from Earth
|which was the brightest [[Kreutz Sungrazer]] of modern times<ref name="brightest">{{cite web|url=http://www.icq.eps.harvard.edu/brightest.html|title=Brightest comets seen since 1935|publisher=International Comet Quarterly|access-date=18 December 2011|archive-url=https://web.archive.org/web/20111228014918/http://www.icq.eps.harvard.edu/brightest.html|archive-date=28 December 2011|url-status=live}}</ref>
|-
| −9.50||[[Iridium flare|Iridium (satellite) flare]] || seen from Earth
|maximum brightness
|-
| −9 to −10 || [[Phobos (moon)]]
| seen from Mars
|maximum brightness
|-
| −7.50||[[SN 1006|supernova of 1006]] || seen from Earth
|the brightest stellar event in recorded history (7200 light-years away)<ref name="SN1006" />
|-
| −6.80||[[Alpha Centauri A]] || seen from [[Proxima Centauri b]]
|<ref name="Siegel 2016">{{cite web | last=Siegel | first=Ethan | title=Ten Ways 'Proxima b' Is Different From Earth | website=Forbes | date=6 September 2016 | url=https://www.forbes.com/sites/startswithabang/2016/09/06/ten-ways-proxima-b-is-different-from-earth/ | access-date=19 February 2023}}</ref>
|-
| −6.00||''The total [[integrated magnitude]] of the [[night sky]] (incl. [[airglow]])'' || seen from Earth
|measuring about 0.002 lux
|-
| −6.00||[[SN 1054|Crab Supernova of 1054]] || seen from Earth
|(6500 light-years away)<ref name="SN1054" />
|-
| −5.90||[[International Space Station]] || seen from Earth
|when the ISS is at its [[perigee]] and fully lit by the Sun<ref>{{cite web|url=http://www.heavens-above.com/satinfo.aspx?SatID=25544|title=Heavens-above.com|publisher=Heavens-above|access-date=22 December 2007|archive-url=https://web.archive.org/web/20090705134152/http://heavens-above.com/satinfo.aspx?SatID=25544|archive-date=5 July 2009|url-status=live}}</ref>
|-
| −4.92|| planet Venus || seen from Earth
|maximum brightness<ref name="Mallama_and_Hilton" /> when illuminated as a crescent
|-
| −4.14|| planet Venus || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| −4 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable during the day with naked eye when Sun is high''. An astronomical object casts human-visible shadows when its apparent magnitude is equal to or lower than −4 <ref>[https://web.archive.org/web/20070627044109/http://www.gsfc.nasa.gov/scienceques2005/20060406.htm NASA Science Question of the Week]. Gsfc.nasa.gov (7 April 2006). Retrieved on 26 April 2013.</ref>
|-
| −3.99|| star [[Epsilon Canis Majoris]] || seen from Earth
|maximum brightness of 4.7&nbsp;million years ago, the historical [[List of brightest stars|brightest star]] of the [[Historical brightest stars|last and next five million years]].<ref name=tomkin>{{cite journal|last=Tomkin|first=Jocelyn|date=April 1998|title=Once and Future Celestial Kings|journal=Sky and Telescope|volume=95|issue=4|pages=59–63|bibcode=1998S&T....95d..59T |url=https://www.thefreelibrary.com/Once+and+future+celestial+kings.-a020468305 }} – based on computations from [[HIPPARCOS]] data. (The calculations exclude stars whose distance or [[proper motion]] is uncertain.) </ref>
|-
| −3.69 || Moon || lit by earthlight, reflecting [[earthshine]] seen from Earth (maximum)<ref name="Agrawal"/>
|
|-
| −2.98|| planet Venus || seen from Earth
|minimum brightness during [[transit of Venus|transits]].
|-
| −2.94|| planet Jupiter || seen from Earth
|maximum brightness<ref name="Mallama_and_Hilton" />
|-
| −2.94|| planet Mars || seen from Earth
|maximum brightness<ref name="Mallama_and_Hilton" />
|-
| −2.5 || colspan="3" style="background-color:#EEE;" |''Faintest objects visible during the day with naked eye when Sun is less than 10° above the horizon''
|-
| −2.50||[[new moon]] || seen from Earth
|minimum brightness
|-
| −2.50 || planet Earth || seen from Mars
| maximum brightness
|-
| −2.48|| planet Mercury || seen from Earth
|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)<ref name="Mallama_and_Hilton" />
|-
| −2.20|| planet Jupiter || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| −1.66|| planet Jupiter || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-id=Sirius
| −1.47|| star system Sirius || seen from Earth
|Brightest star except for the Sun at visible wavelengths<ref name="SIMBAD-Sirius" />
|-
| −0.83|| star [[Eta Carinae]] || seen from Earth
|apparent brightness as a [[supernova impostor]] in April 1843
|-
| −0.72|| star [[Canopus (star)|Canopus]] || seen from Earth
|2nd brightest star in night sky<ref name="SIMBAD-Canopus" />
|-
| −0.55|| planet Saturn || seen from Earth
|maximum brightness near opposition and perihelion when the rings are angled toward Earth<ref name="Mallama_and_Hilton" />
|-
| −0.30||[[Halley's Comet#History|Halley's comet]] || seen from Earth
|Expected apparent magnitude at 2061 passage
|-
| −0.27|| star system [[Alpha Centauri]] AB || seen from Earth
|Combined magnitude (3rd brightest star in night sky)
|-
| −0.04|| star [[Arcturus (star)|Arcturus]] || seen from Earth
|4th brightest star to the naked eye<ref name="SIMBAD-Arcturus" />
|-
| −0.01|| star Alpha Centauri A || seen from Earth
|4th brightest ''individual'' star visible telescopically in the night sky
|-
| +0.03|| star [[Vega]] || seen from Earth
|originally chosen as a definition of the zero point<ref name="SIMBAD-Vega" />
|-
| +0.23|| planet Mercury || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| +0.46|| star Sun || seen from Alpha Centauri
|
|-
| +0.46|| planet Saturn || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| +0.71|| planet Mars || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| +0.90|| Moon || seen from Mars
|maximum brightness
|-
| +1.17|| planet Saturn || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-
| +1.33|| star Alpha Centauri B || seen from Earth
|
|-
| +1.86|| planet Mars || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-
| +1.98|| star [[Polaris]] || seen from Earth
|mean brightness<ref>{{Cite journal | last1 = Evans | first1 = N. R. | last2 = Schaefer | first2 = G. H. | last3 = Bond | first3 = H. E. | last4 = Bono | first4 = G. | last5 = Karovska | first5 = M. | last6 = Nelan | first6 = E. | last7 = Sasselov | first7 = D. | last8 = Mason | first8 = B. D. | doi = 10.1088/0004-6256/136/3/1137 | title = Direct Detection of the Close Companion of Polaris with The Hubble Space Telescope | journal = The Astronomical Journal | volume = 136 | issue = 3 | page = 1137 | year = 2008 |arxiv = 0806.4904 |bibcode = 2008AJ....136.1137E | s2cid = 16966094 }}</ref>
|-
| +2.00
|star system [[T Coronae Borealis|T CrB]] (when nova)
|seen from Earth
|Star system that goes nova every 80 years
|-
| +2.40
|[[Halley's Comet]]
|seen from Earth
|About [[Magnitude (astronomy)|Magnitude]] during 1986 [[Apsis|perihelion]]
|-
| +3 || colspan="3" style="background-color:#EEE;" |''Faintest objects visible in an urban neighborhood with naked eye''
|-
| +3.03|| supernova [[SN 1987A]] || seen from Earth
|in the [[Large Magellanic Cloud]] (160,000 light-years away)
|-id=3
| +3.44||[[Andromeda Galaxy]] || seen from Earth
|M31<ref name="SIMBAD-M31" />
|-
| +4 || colspan="3" style="background-color:#EEE;" |''Faintest objects visible in a suburban neighborhood with naked eye''
|-
| +4.00||[[Orion Nebula]] || seen from Earth
|M42
|-
| +4.38|| moon [[Ganymede (moon)|Ganymede]] || seen from Earth
|maximum brightness<ref name="horizons-Ganymede" /> (moon of Jupiter and the largest moon in the Solar System)
|-
| +4.50|| open cluster [[Messier 41|M41]] || seen from Earth
|an open cluster that may have been seen by [[Aristotle]]<ref name="Aristotle">{{cite web|url=http://messier.seds.org/more/m041_ari.html|title=M41 possibly recorded by Aristotle|date=28 July 2006|publisher=SEDS (Students for the Exploration and Development of Space)|access-date=29 November 2009|archive-url=https://web.archive.org/web/20170418184854/http://messier.seds.org/more/m041_ari.html|archive-date=18 April 2017|url-status=live}}</ref>
|-
| +4.50
|[[Sagittarius Dwarf Spheroidal Galaxy]]
|seen from Earth
|-
| +5.20|| asteroid [[4 Vesta|Vesta]] || seen from Earth
|maximum brightness
|-id=Uranus
| +5.38<ref>{{Cite web|url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/uranusfact.html|title=Uranus Fact Sheet|website=nssdc.gsfc.nasa.gov|language=en|access-date=8 November 2018|archive-url=https://web.archive.org/web/20190122221135/https://nssdc.gsfc.nasa.gov/planetary/factsheet/uranusfact.html|archive-date=22 January 2019|url-status=live}}</ref>
| planet [[Uranus]]|| seen from Earth
|maximum brightness<ref name="Mallama_and_Hilton" /> (Uranus comes to perihelion in 2050)
|-
| +5.68|| planet Uranus || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| +5.72|| spiral galaxy [[Triangulum Galaxy|M33]] || seen from Earth
|which is used as a test for [[naked eye]] seeing under dark skies<ref name="SIMBAD-M33">{{cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=M33|title=SIMBAD-M33|publisher=SIMBAD Astronomical Database|access-date=28 November 2009|archive-url=https://web.archive.org/web/20140913102508/http://simbad.u-strasbg.fr/simbad/sim-id?Ident=M33|archive-date=13 September 2014|url-status=live}}</ref><ref name="M33">{{cite web|url=http://www.astropix.com/HTML/A_FALL/M33.HTM|title=M33 (Triangulum Galaxy)|last=Lodriguss|first=Jerry|date=1993|access-date=27 November 2009|archive-url=https://web.archive.org/web/20100115043351/http://astropix.com/HTML/A_FALL/M33.HTM|archive-date=15 January 2010|url-status=live}} (Shows bolometric magnitude not visual magnitude.)</ref>
|-
| +5.80 ||[[gamma-ray burst]] [[GRB 080319B]] || seen from Earth
|Peak visual magnitude (the "Clarke Event") seen on Earth on 19 March 2008 from a distance of 7.5&nbsp;billion light-years.
|-
| +6.03|| planet Uranus || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-
| +6.49|| asteroid [[2 Pallas|Pallas]] || seen from Earth
|maximum brightness
|-
| +6.5 || colspan="3" style="background-color:#EEE;" |''Approximate limit of [[star]]s observed by a '''mean''' naked eye observer under very good conditions. There are about 9,500 stars visible to mag 6.5.<ref name="SIMBAD-mag6.5"/>''
|-
| +6.50|| global cluster [[Messier 2|M2]] || seen from Earth
|mean naked-eye target
|-
| +6.64|| dwarf planet [[Ceres (dwarf planet)|Ceres]] || seen from Earth
|maximum brightness
|-
| +6.75|| asteroid [[7 Iris|Iris]] || seen from Earth
|maximum brightness
|-id=extremegalaxy
| +6.90|| spiral galaxy [[Messier 81|M81]] || seen from Earth
|This is an extreme naked-eye target that pushes human eyesight and the Bortle scale to the limit<ref name="SEDS">{{cite web|url=http://messier.seds.org/m/m081.html|title=Messier 81|date=2 September 2007|publisher=SEDS (Students for the Exploration and Development of Space)|access-date=28 November 2009|archive-url=https://web.archive.org/web/20170714113244/http://messier.seds.org/m/m081.html|archive-date=14 July 2017|url-status=live}}</ref>
|-
| +7.25|| planet Mercury || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-
| +7.67<ref>{{Cite web|url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html|title=Neptune Fact Sheet|website=nssdc.gsfc.nasa.gov|language=en|access-date=8 November 2018|archive-url=https://web.archive.org/web/20190110222952/https://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html|archive-date=10 January 2019|url-status=live}}</ref>|| planet Neptune || seen from Earth
|maximum brightness<ref name="Mallama_and_Hilton" /> (Neptune comes to perihelion in 2042)
|-
| +7.78|| planet Neptune || seen from Earth
|mean brightness<ref name="Mallama_and_Hilton" />
|-
| +8|| colspan="3" style="background-color:#EEE;" |''Extreme naked-eye limit, Class 1 on [[Bortle scale]], the darkest skies available on Earth.<ref name="Bortle">{{cite web |date=February 2001 |title=The Bortle Dark-Sky Scale |publisher=Sky & Telescope |author=John E. Bortle |url=https://skyandtelescope.org/astronomy-resources/light-pollution-and-astronomy-the-bortle-dark-sky-scale/ |access-date=18 November 2009 |archive-url=https://web.archive.org/web/20090323232806/http://www.skyandtelescope.com/resources/darksky/3304011.html |archive-date=23 March 2009 |url-status=live }}</ref>''
|-
| +8.00|| planet Neptune || seen from Earth
|minimum brightness<ref name="Mallama_and_Hilton" />
|-id=extremestar
| +8.10|| moon [[Titan (moon)|Titan]] || seen from Earth
|maximum brightness; largest moon of Saturn;<ref name="horizons-Titan" /><ref name="arval" /> mean opposition magnitude 8.4<ref name="jpl-sat" />
|-
| +8.29
|star [[UY Scuti]]
|seen from Earth
|Maximum brightness; one of largest known stars by radius
|-
| +8.94|| asteroid [[10 Hygiea]] || seen from Earth
|maximum brightness<ref name="AstDys-Hygiea" />
|-
| +9.30|| spiral galaxy [[Messier 63|M63]] || seen from Earth
|-
| +9.5|| colspan="3" style="background-color:#EEE;" |''Faintest objects visible using common 10×50 [[binoculars]] under typical conditions<ref name="binoculars"/>''
|-
| +10|| [[Apollo 8]] [[Apollo command and service module|CSM]] in orbit around the Moon || seen from Earth
|calculated (Liemohn)<ref name="Physics and Astronomy">{{cite web | title=Tracking the Apollo Flights | website=Static Web Pages for Physics and Astronomy | date=1968-12-21 | url=https://pages.astronomy.ua.edu/keel/space/apollo.html | access-date=2024-03-20}}</ref>
|-
| +10
|star system [[T Coronae Borealis|T CrB]](average)
|seen from Earth
|Star system that goes nova every 80 years
|-
| +10.20|| moon [[Iapetus (moon)|Iapetus]] || seen from Earth
|maximum brightness,<ref name="arval" /> brightest when west of Saturn and takes 40 days to switch sides
|-
| +11.05
|star [[Proxima Centauri]]
|seen from Earth
|closest star (other than the Sun)
|-
| +11.8
|moon [[Phobos (moon)|Phobos]]
|seen from Earth
|Maximum brightness; brighter moon of Mars
|-
| +12.23
|star [[R136a1]]
|seen from Earth
|Most luminous and massive star known<ref>{{Cite news|url=https://www.space.com/41313-most-massive-star.html|title=What Is the Most Massive Star?|work=Space.com|access-date=5 November 2018|archive-url=https://web.archive.org/web/20190111150305/https://www.space.com/41313-most-massive-star.html|archive-date=11 January 2019|url-status=live}}</ref>
|-
| +12.89
|moon [[Deimos (moon)|Deimos]]
|seen from Earth
|Maximum brightness
|-
| +12.91||[[quasar]] [[3C 273]] || seen from Earth
|brightest ([[luminosity distance]] of 2.4&nbsp;billion [[light-year]]s)
|-
| +13.42|| moon [[Triton (moon)|Triton]] || seen from Earth
|Maximum brightness<ref name="jpl-sat" />
|-id=Pluto
| +13.65|| dwarf planet [[Pluto#Observation|Pluto]] || seen from Earth
|maximum brightness,<ref name="pluto" /> 725 times fainter than magnitude 6.5 naked eye skies
|-
| +13.9
|moon [[Titania (moon)|Titania]]
|seen from Earth
|Maximum brightness; brightest moon of Uranus
|-
| +14.1
|star [[WR 102]]
|seen from Earth
|Hottest known star
|-
| +15.4 ||[[Centaur (minor planet)|centaur]] [[2060 Chiron|Chiron]] || seen from Earth
|maximum brightness<ref name="AstDys-Chiron" />
|-
| +15.55|| moon [[Charon (moon)|Charon]] || seen from Earth
|maximum brightness (the largest moon of Pluto)
|-
| +16.8 || dwarf planet [[Makemake]] || seen from Earth
|Current [[Opposition (astronomy and astrology)|opposition]] brightness<ref name="AstDys-Makemake" />
|-id=17
| +17.27|| dwarf planet [[Haumea]] || seen from Earth
|Current opposition brightness<ref name="AstDys-Haumea" />
|-
| +18.7 || dwarf planet [[Eris (dwarf planet)|Eris]] || seen from Earth
|Current opposition brightness

|-id=19
| +19.5 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable with the [[Catalina Sky Survey]] 0.7-meter telescope using a 30-second exposure''<ref>{{Cite web |url=https://catalina.lpl.arizona.edu/about/facilities |title=Catalina Sky Survey (CSS) Facilities |access-date=3 November 2019 |archive-url=https://web.archive.org/web/20191103212019/https://catalina.lpl.arizona.edu/about/facilities |archive-date=3 November 2019 |url-status=live }}</ref> and also the approximate [[limiting magnitude]] of [[Asteroid Terrestrial-impact Last Alert System]] (ATLAS)
|-
| +20.7 || moon [[Callirrhoe (moon)|Callirrhoe]] || seen from Earth
|(small ≈8&nbsp;km satellite of Jupiter)<ref name="jpl-sat" />
|-
| +22 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable in visible light with a 600&nbsp;mm (24″) [[Ritchey-Chrétien telescope]] with 30 minutes of stacked images (6 subframes at 5 minutes each) using a [[Charge-coupled device|CCD detector]]<ref name="24inch">{{cite web|date=5 October 2009|title=17 New Asteroids Found by LightBuckets|publisher=LightBuckets|author=Steve Cullen (sgcullen)|url=http://www.lightbuckets.com/news/37/17-new-asteroids-found-by-lightbuckets/|archive-url=https://web.archive.org/web/20100131051349/http://www.lightbuckets.com/news/37/17-new-asteroids-found-by-lightbuckets/|archive-date=31 January 2010|access-date=15 November 2009}}</ref>''
|-
| +22.8
|[[Luhman 16]]
|seen from Earth
|Closest [[brown dwarf]]s (Luhman 16A=23.25, Luhman 16B=24.07)<ref name="Boffin et al. 2014" />
|-
| +22.91|| moon [[Hydra (moon)|Hydra]] || seen from Earth
|maximum brightness of Pluto's moon
|-
| +23.38|| moon [[Nix (moon)|Nix]] || seen from Earth
|maximum brightness of Pluto's moon
|-id=24
| +24 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable with the [[Pan-STARRS]] 1.8-meter telescope using a 60-second exposure''<ref>{{cite web| url = https://panstarrs.ifa.hawaii.edu/pswww/?page_id=34| title = Pan-STARRS limiting magnitude| access-date = 12 August 2019| archive-date = 24 November 2020| archive-url = https://web.archive.org/web/20201124152242/https://panstarrs.ifa.hawaii.edu/pswww/?page_id=34}}</ref> This is currently the limiting magnitude of automated allsky [[astronomical survey]]s.
|-id=25
| +25.0 || moon [[Fenrir (moon)|Fenrir]] || seen from Earth
|(small ≈4&nbsp;km satellite of Saturn)<ref name="sheppard-saturn" /> and about 25 million times fainter than what can be seen with the naked eye.
|-
| +25.3 || Trans-Neptunian object {{mpl|2018 AG|37}} || seen from Earth
|Furthest known observable object in the Solar System about {{convert|132|AU|e9km|abbr=unit|lk=off}} from the Sun
|-id=26
| +26.2 || Trans-Neptunian object {{mpl|2015 TH|367}} || seen from Earth
|200&nbsp;km sized object about {{convert|90|AU|e9km|abbr=unit|lk=off}} from the Sun and about 75 million times fainter than what can be seen with the naked eye.
|-id=27
| +27.7 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable with a single 8-meter class ground-based telescope such as the [[Subaru Telescope]] in a 10-hour image<ref>[http://www.skyandtelescope.com/astronomy-resources/astronomy-questions-answers/what-is-the-faintest-object-imaged-by-ground-based-telescopes/ What is the faintest object imaged by ground-based telescopes?] {{Webarchive|url=https://web.archive.org/web/20160202021559/http://www.skyandtelescope.com/astronomy-resources/astronomy-questions-answers/what-is-the-faintest-object-imaged-by-ground-based-telescopes/ |date=2 February 2016 }}, by: The Editors of Sky Telescope, 24 July 2006</ref>''
|-id=28
| +28.2 ||[[Halley's Comet]] || seen from Earth (2003)
|in 2003 when it was {{Convert|28|AU|e9km|abbr=unit|lk=off}} from the Sun, imaged using 3 of 4 synchronised individual scopes in the [[European Southern Observatory|ESO]]'s [[Very Large Telescope]] array using a total exposure time of about 9 hours<ref name="ESO2003">{{cite web |date=1 September 2003 |title=New Image of Comet Halley in the Cold |url=https://www.eso.org/public/news/eso0328/ |archive-url=https://web.archive.org/web/20250313011405/https://www.eso.org/public/news/eso0328/ |archive-date=13 March 2025 |access-date=29 April 2025 |publisher=[[ESO]]}}</ref>
|-
| +28.4 || asteroid {{mpl|2003 BH|91}} || seen from Earth orbit
|observed magnitude of ≈15-kilometer [[Kuiper belt]] object seen by the [[Hubble Space Telescope]] (HST) in 2003, dimmest known directly observed asteroid.
|-id=29
| +29.4 || [[JADES-GS-z13-0]] || seen from Earth || Discovered by the [[James Webb Space Telescope]]. One of the furthest objects discovered.<ref name="Robertson2022">{{Cite journal|display-authors = etal |first1 = B. E. |last1 = Robertson |title = Identification and properties of intense star-forming galaxies at redshifts z > 10 |journal = Nature Astronomy |year = 2023 |volume = 7 |issue = 5 |pages = 611–621 |doi = 10.1038/s41550-023-01921-1 |arxiv = 2212.04480|bibcode = 2023NatAs...7..611R |s2cid = 257968812 }}</ref> Approximately a billion times fainter than can be observed with the naked eye.
|-
|-id=31
| +31.5 || colspan="3" style="background-color:#EEE;" |''Faintest objects observable in visible light with [[Hubble Space Telescope]] via the [[EXtreme Deep Field]] with ≈23 days of exposure time collected over 10 years<ref>{{cite journal |last1=Illingworth |first1=G. D. |last2=Magee |first2=D. |last3=Oesch |first3=P. A. |last4=Bouwens |first4=R. J. |last5=Labbé |first5=I. |last6=Stiavelli |first6=M. |last7=van Dokkum |first7=P. G. |last8=Franx |first8=M. |last9=Trenti |first9=M. |last10=Carollo |first10=C. M. |last11=Gonzalez |first11=V. |title=The HST eXtreme Deep Field XDF: Combining all ACS and WFC3/IR Data on the HUDF Region into the Deepest Field Ever|journal=The Astrophysical Journal Supplement Series |date=21 October 2013 |volume=209 |issue=1 |page=6 |arxiv=1305.1931 |bibcode=2013ApJS..209....6I |doi=10.1088/0067-0049/209/1/6|s2cid=55052332 }}</ref>''
|-
| +35 || unnamed asteroid || seen from Earth orbit
|expected magnitude of dimmest known asteroid, a 950-meter Kuiper belt object discovered (by the HST) [[Occultation|passing in front of a star]] in 2009.<ref name="hstoccultation">{{cite news |url=https://www.nasa.gov/mission_pages/hubble/science/hst_img_kuiper-smallest.html |title=Hubble Finds Smallest Kuiper Belt Object Ever Seen |work=[[NASA]] |access-date=16 March 2018 |language=en |archive-url=https://web.archive.org/web/20170609103407/https://www.nasa.gov/mission_pages/hubble/science/hst_img_kuiper-smallest.html |archive-date=9 June 2017 |url-status=live}}</ref>
|-
| +35 || star [[LBV 1806−20]] || seen from Earth
|a luminous blue variable star, expected magnitude at visible wavelengths due to [[interstellar extinction]]
|}