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88 relations: Absolute magnitude, ADS 9731, Alan William James Cousins, Albireo, Alpha Cassiopeiae, Apparent magnitude, ASASSN-15lh, ASASSN1, Asteroid spectral types, Astronomical filter, AU Microscopii, Bellatrix, Belogradchik Observatory, Beta Cassiopeiae, Chemically peculiar star, Color index, Color temperature, Concordia Station, CXOU J164710.2-455216, Deep Lens Survey, Epsilon Eridani, Extinction (astronomy), Gamma Volantis, Gliese 682, Gliese 880, Harold Johnson (astronomer), HD 134439/HD 134440, HD 8574, Hipparcos, HR 5171, I band, Kepler-421, Kepler-86, KY Cygni, LBV 1806-20, List of brightest stars, List of nearest stars and brown dwarfs, Luminosity, Lyons Groups of Galaxies, Magnitude (astronomy), Metallicity, Millennium Star Atlas, NGC 3114, NGC 5286, NGC 5548, NGC 7510, NGC 7790, Nicholas Mayall, North polar sequence, Nova Persei 2018, ..., Otto Struve Telescope, Outline of astronomy, Pan-STARRS, Photometric system, PKS 1302-102, Pleione (star), PSR J1719-1438, Radio spectrum, Red clump, RIK-210, Ross 128, Royal Observatory, Cape of Good Hope, Sigma Andromedae, Skyglow, SOPHIE échelle spectrograph, Stellar classification, Stewart Sharpless, Strömgren photometric system, The Swift UVOT Photometric System, Tip of the red-giant branch, U (disambiguation), U Camelopardalis, UBV, UBV Photoelectric Photometry Catalogue, Ukrainian Optical Facilities for Near-Earth Space Surveillance Network, V1280 Scorpii, V509 Cassiopeiae, V838 Monocerotis, Vega, Vilnius photometric system, W Ursae Majoris variable, Wide-field Infrared Survey Explorer, William P. Bidelman, WISE 0855−0714, WR 102ka, 10 Aquilae, 2246 Bowell, 83 Leonis. Expand index (38 more) »
Absolute magnitude
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
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ADS 9731
ADS 9731 is a star system that consists of six stars.
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Alan William James Cousins
Alan William James Cousins (8 August 1903 – 11 May 2001) was a South African astronomer.
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Albireo
Albireo is the traditional name for the double star also designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg), although the International Astronomical Union now regards the name as only applying to the brightest component.
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Alpha Cassiopeiae
Alpha Cassiopeiae (α Cassiopeiae, abbreviated Alpha Cas, α Cas), also named Schedar, is a second magnitude star in the constellation of Cassiopeia.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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ASASSN-15lh
ASASSN-15lh (supernova designation SN 2015L) is an extremely bright astronomical transient discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN), with the appearance of a hypernova event.
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ASASSN1
Comet ASASSN1 (IAU designation C/2017 O1) is a comet discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN).
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Asteroid spectral types
An asteroid spectral type is assigned to asteroids based on their emission spectrum, color, and sometimes albedo (reflectivity).
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Astronomical filter
An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to simply enhance the details of celestial objects (much as with amateur photography).
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AU Microscopii
AU Microscopii (AU Mic) is a small star located away – about 8 times as far as the closest star after the Sun.
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Bellatrix
Bellatrix, also designated Gamma Orionis (γ Orionis, abbreviated Gamma Ori, γ Ori), is the third-brightest star in the constellation of Orion, 5° west of the red giant Alpha Orionis (Betelgeuse).
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Belogradchik Observatory
The Astronomical Observatory of Belogradchik or Belogradchik Observatory is an astronomical observatory owned and operated by the Institute of Astronomy of the Bulgarian Academy of Sciences.
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Beta Cassiopeiae
Beta Cassiopeiae (β Cassiopeiae, abbreviated Beta Cas or β Cas), also named Caph, is a Delta Scuti variable star in the constellation of Cassiopeia.
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Chemically peculiar star
In astrophysics, chemically peculiar stars (CP stars) are stars with distinctly unusual metal abundances, at least in their surface layers.
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Color index
In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature.
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Color temperature
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source.
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Concordia Station
Concordia Research Station, which opened in 2005, is a French-Italian research facility that was built above sea level at a location called Dome C on the Antarctic Plateau, Antarctica.
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CXOU J164710.2-455216
CXOU J164710.2-455216 is an anomalous X-ray pulsar in the massive galactic open cluster Westerlund 1.
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Deep Lens Survey
The Deep Lens Survey (DLS, short for "Deep Gravitational Lensing Survey") is an ultra-deep multi-band optical survey of seven 4 square degree fields.
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Epsilon Eridani
Epsilon Eridani (ε Eridani, abbreviated Epsilon Eri, ε Eri), also named Ran, is a star in the southern constellation of Eridanus, at a declination of 9.46° south of the celestial equator.
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Extinction (astronomy)
In astronomy, extinction is the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer.
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Gamma Volantis
Gamma Volantis, Latinized from γ Volantis, is a wide binary star system in the southern constellation of Volans.
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Gliese 682
Gliese 682 or GJ 682 is a red dwarf.
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Gliese 880
Gliese 880 (GJ 880 / HD 216899) is a red dwarf star in the constellation of Pegasus.
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Harold Johnson (astronomer)
Harold Lester Johnson (April 17, 1921 – April 2, 1980) was an American astronomer.
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HD 134439/HD 134440
HD 134439 and HD 134440 are a pair of K-type runaway stars, nearly hypervelocity stars, in the constellation Libra.
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HD 8574
HD 8574 is a yellow-white star in the constellation Pisces.
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Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
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HR 5171
HR 5171, also known as V766 Centauri, is a triple star system in the constellation Centaurus, around 12,000 light years from Earth.
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I band
I band may refer to.
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Kepler-421
Kepler-421 is a star.
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Kepler-86
Kepler-86, PH2 or KIC 12735740 (2MASS 19190326+5157453), is a G-type star distant within the constellation Cygnus.
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KY Cygni
KY Cygni is a red supergiant of spectral class M3.5Ia located in the constellation Cygnus.
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LBV 1806-20
LBV 1806-20 is a candidate luminous blue variable (LBV) and likely binary star located nearly 40,000 light-years from the Sun, towards the center of the Milky Way.
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List of brightest stars
This is a list of the brightest naked eye stars to +2.50 magnitude, as determined by their maximum, total, or combined apparent visual magnitudes as seen from Earth.
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List of nearest stars and brown dwarfs
The following two lists include all the known stars and brown dwarfs that are within of the Sun, or were/will be within in the astronomically near past or future.
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Luminosity
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
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Lyons Groups of Galaxies
Lyons Groups of Galaxies (or LGG) is an astronomical catalog of nearby groups of galaxies complete to a limiting apparent magnitude B0.
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Magnitude (astronomy)
In astronomy, magnitude is a logarithmic measure of the brightness of an object in a defined passband, often in the visible or infrared spectrum, but sometimes across all wavelengths.
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Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
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Millennium Star Atlas
The Millennium Star Atlas was constructed as a collaboration between a team at Sky & Telescope led by Roger Sinnott, and the European Space Agency's Hipparcos project, led by Michael Perryman.
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NGC 3114
NGC 3114 is a sparse open cluster which is projected onto the outskirts of the Carina complex.
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NGC 5286
NGC 5286 (also known as Caldwell 84) is a globular cluster of stars located some 35,900 light years away in the constellation Centaurus.
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NGC 5548
NGC 5548 is a Type I Seyfert galaxy with a bright, active nucleus.
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NGC 7510
NGC 7510 is an open cluster of stars located around 11,400 light years away in the constellation Cepheus, near the border with Cassiopeia.
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NGC 7790
NGC 7790 is a young open cluster of stars located some 10,800 light years away from Earth in the northern constellation of Cassiopeia.
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Nicholas Mayall
Nicholas Ulrich Mayall (May 9, 1906 – January 5, 1993) was an American observational astronomer.
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North polar sequence
The North polar sequence is a group of 96 stars that was used to define stellar magnitudes and colors.
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Nova Persei 2018
Nova Persei 2018 is a bright nova in the constellation Perseus discovered on April 29, 2018.
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Otto Struve Telescope
The Otto Struve Telescope was the first major telescope to be built at McDonald Observatory.
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Outline of astronomy
The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the universe beyond Earth, including its formation and development, and the evolution, physics, chemistry, meteorology, and motion of celestial objects (such as galaxies, planets, etc.) and phenomena that originate outside the atmosphere of Earth (such as the cosmic background radiation).
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Pan-STARRS
The Panoramic Survey Telescope and Rapid Response System (Pan-STARRS 1; obs. code: F51 and Pan-STARRS 2 obs. code: F52) located at Haleakala Observatory, Hawaii, USA, consists of astronomical cameras, telescopes and a computing facility that is surveying the sky for moving or variable objects on a continual basis, and also producing accurate astrometry and photometry of already detected objects.
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Photometric system
In astronomy, a photometric system is a set of well-defined passbands (or filters), with a known sensitivity to incident radiation.
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PKS 1302-102
PKS 1302-102 is a quasar in the Virgo constellation, located at a distance of approximately 1.1 Gpc (around 3.5 billion light-years).
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Pleione (star)
Pleione, designated 28 Tauri and BU Tauri (abbreviated 28 Tau or BU Tau), is a binary star and the seventh-brightest star in the Pleiades star cluster (Messier 45).
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PSR J1719-1438
PSR J1719-1438 is a millisecond pulsar with a spin period of 5.8 ms located about 4,000 ly from Earth in the direction of Serpens Cauda, one minute from the border with Ophiuchus.
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Radio spectrum
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).
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Red clump
The red clump is a clustering of red giants in the Hertzsprung–Russell diagram at around 5,000 K and absolute magnitude (MV) +0.5, slightly hotter than most red-giant-branch stars of the same luminosity.
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RIK-210
We find transient, transit-like dimming events within the K2 time series photometry of the young star RIK-210 in the Upper Scorpius OB association.
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Ross 128
Ross 128 is a red dwarf in the equatorial zodiac constellation of Virgo, near β Virginis.
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Royal Observatory, Cape of Good Hope
The Royal Observatory, Cape of Good Hope, is the oldest continuously existing scientific institution in South Africa.
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Sigma Andromedae
Sigma Andromedae (σ And, σ Andromedae) is the Bayer designation for a star in the northern constellation of Andromeda.
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Skyglow
Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars.
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SOPHIE échelle spectrograph
The SOPHIE (Spectrographe pour l’Observation des Phénomènes des Intérieurs stellaires et des Exoplanètes, literally meaning "Spectrograph for the observation of the phenomena of the stellar interiors and of the exoplanets") échelle spectrograph is a high-resolution echelle spectrograph installed on the 1.93m reflector telescope at the Haute-Provence Observatory located in south-eastern France.
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Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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Stewart Sharpless
Stewart Sharpless (March 29, 1926 – January 19, 2013) was an American astronomer who carried out fundamental work on the structure of the Milky Way galaxy.
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Strömgren photometric system
Strömgren photometric system (uvby) (sometimes also referred as Strömgren - Crawford photometric system) is four-colour medium-band photometric system (plus H-beta filters) for stellar classification.
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The Swift UVOT Photometric System
In astronomical photometry, the Ultraviolet and Optical Telescope (UVOT) on the Swift Gamma-Ray Burst Mission observes astronomical objects in its 17-by-17 arc minute field of view through one of several filters or grisms.
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Tip of the red-giant branch
Tip of the red-giant branch (TRGB) is a primary distance indicator used in astronomy.
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U (disambiguation)
U is the twenty-first letter of the Latin alphabet.
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U Camelopardalis
U Camelopardalis is a semiregular variable star in the constellation Camelopardalis.
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UBV
UBV may mean.
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UBV Photoelectric Photometry Catalogue
The UBV Photoelectric Photometry Catalogue, or UBV M, is the star brightness catalogue that complies to the UBV photometric system developed by astronomer Harold Johnson.
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Ukrainian Optical Facilities for Near-Earth Space Surveillance Network
Ukrainian Optical Facilities for Near-Earth Space Surveillance Network, the UMOS (from Ukrainian acronym: УМОС.
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V1280 Scorpii
V1280 Scorpii (or Nova Scorpii 2007) is a nova observed in February 2007 in the constellation Scorpius, just south of M62.
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V509 Cassiopeiae
V509 Cassiopeiae (V509 Cas or HR 8752) is one of two yellow hypergiant stars found in the constellation Cassiopeia, which also contains Rho Cassiopeiae.
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V838 Monocerotis
V838 Monocerotis (V838 Mon) is a red star in the constellation Monoceros about 20,000 light years (6 kpc) from the Sun.
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Vega
Vega, also designated Alpha Lyrae (α Lyrae, abbreviated Alpha Lyr or α Lyr), is the brightest star in the constellation of Lyra, the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
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Vilnius photometric system
The Vilnius photometric system is a medium-band seven-colour photometric system (UPXYZVS), created in 1963 by Vytautas Straižys and his coworkers.
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W Ursae Majoris variable
A W Ursae Majoris variable, also known as a low mass contact binary, is a type of eclipsing binary variable star.
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Wide-field Infrared Survey Explorer
Wide-field Infrared Survey Explorer (WISE) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation in February 2011.
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William P. Bidelman
William Pendry Bidelman (September 25, 1918 – May 3, 2011).
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WISE 0855−0714
WISE 0855−0714 (full designation WISE J085510.83−071442.5) is a (sub-) brown dwarf from Earth, whose discovery was announced in April 2014 by Kevin Luhman using data from the Wide-field Infrared Survey Explorer (WISE).
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WR 102ka
WR 102ka, also known as the Peony star, is a Wolf–Rayet star that is one of several candidates for the most luminous-known star in the Milky Way.
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10 Aquilae
10 Aquilae (abbreviated 10 Aql) is a star in the equatorial constellation of Aquila.
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2246 Bowell
2246 Bowell, provisional designation, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 44 kilometers in diameter.
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83 Leonis
83 Leonis, abbreviated 83 Leo, is a binary star system approximately 58 light-years away in the constellation of Leo (the Lion).
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Redirects here:
I band (infrared), Johnson magnitude, Johnson-Cousins photometric system, Johnson-Morgan system, R band, UBV Filter, UBV Filters, UBV filter, UBV filters, UBV system, UBVRI, UBVRI Filters, UBVRI system, Ubv System, Ubv system, Ultraviolet-Blue-Violet.
References
[1] https://en.wikipedia.org/wiki/UBV_photometric_system
