Searches , social queries for VARIABLE STAR
Search references for VARIABLE STAR. Phrases containing VARIABLE STAR
See searches and references containing VARIABLE STAR!
Search references for VARIABLE STAR. Phrases containing VARIABLE STAR
See searches and references containing VARIABLE STAR!VARIABLE STAR
Star whose brightness fluctuates, as seen from Earth
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused
Variable_star
Type of variable star that pulsates radially
A Cepheid variable (/ˈsɛfi.ɪd, ˈsiːfi-/) is a type of variable star that pulsates radially, varying in both diameter and temperature. It changes in brightness
Cepheid_variable
Book by Robert Heinlein and Spider Robinson
Variable Star is a 2006 science fiction novel by American author Spider Robinson, based on the surviving seven pages of an eight-page 1955 novel outline
Variable_Star
System of two stars orbiting each other
binary, with the optical counterpart being a variable star. Sirius is another binary and the brightest star in the night time sky, with a visual apparent
Binary_star
Stars with irregular large fluctuations in brightness
In astronomy, cataclysmic variable stars (CVs) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent
Cataclysmic_variable_star
Unique identifier given to variable stars
In astronomy, a variable-star designation is a unique identifier given to variable stars. It extends the Bayer designation format, with an identifying
Variable-star_designation
Type of variable star
In astronomy, a semiregular variable star, a type of variable star, is a giant or supergiant of intermediate and late (cooler) spectral type. It shows
Semiregular_variable_star
Type of star that is luminous, blue, and variable in brightness
discovered to be variable, for example δ Sct variables named after the star δ Sct. The first luminous blue variable to be identified as a variable star was P Cygni
Luminous_blue_variable
Type of variable star
Mira variables (/ˈmaɪrə/; named for the prototype star Mira) are a class of pulsating stars characterized by very red colours, pulsation periods longer
Mira_variable
Variable star that brightens unpredictably
A flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes. It is believed that the flares on flare
Flare_star
Topics referred to by the same term
Look up Variable, variable, or variables in Wiktionary, the free dictionary. Wikiversity has learning resources about Variable Variable may refer to:
Variable
Class of young variable stars
of variable stars that are less than about ten million years old. This class is named after the prototype, T Tauri, a young star in the Taurus star-forming
T_Tauri_star
Constellation in the northern celestial hemisphere
the north pole star. Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night
Ursa_Minor
Organization of amateur and professional astronomers
The American Association of Variable Star Observers (AAVSO) is an international nonprofit organization. Founded in 1911, the organization focuses on coordinating
American Association of Variable Star Observers
American_Association_of_Variable_Star_Observers
Cool luminous pulsating variable star
term long-period variable (LPV) star refers to various groups of cool luminous pulsating variable stars. The General Catalogue of Variable Stars does not
Long-period_variable_star
Constellation straddling the celestial equator
M-type red supergiant star nearing the end of its life. It is the second-brightest star in Orion, and is a semiregular variable star. It serves as the right
Orion_(constellation)
Constellation in the southern celestial hemisphere
Variable Star Index. American Association of Variable Star Observers. 4 January 2010. Retrieved 11 October 2013. "AI Velorum". International Variable
Vela_(constellation)
Constellation in the southern celestial hemisphere
1 arcseconds from a magnitude 10 star. Theta Pyxidis is a red giant of spectral type M1III and semi-regular variable with two measured periods of 13 and
Pyxis
Binary star in the constellation Scorpius
irregular variable star that ranges in brightness from an apparent visual magnitude of +0.6 down to +1.6. It is on average the fifteenth-brightest star in the
Antares
variable star depends on the pulsation period of the star, the regularity of pulsations, the mass of the planet, and its distance from the host star.
Methods of detecting exoplanets
Methods_of_detecting_exoplanets
Constellation in the Southern Celestial Hemisphere
is a faint constellation; its brightest star is Alpha Antliae, an orange giant that is a suspected variable star, ranging between apparent magnitudes 4
Antlia
Class of eclipsing binary stars
variable star, Bayer designation Beta Persei, first had its variability recorded in 1667 by Geminiano Montanari. The mechanism for its being variable
Algol_variable
Shock wave caused by blowing stellar wind
in the Orion Nebula. Bow shocks also appear around six Cataclysmic variable star (CVs) with luminous accretion disks, which drive fast winds into the
Bow_shock
Type of variable star
these "cluster-type" variables were being rapidly identified in the mid-1890s, especially by E. C. Pickering. Probably the first star definitely of RR Lyrae
RR_Lyrae_variable
Stars that appear green
They Thought Couldn't Exist: A Green Star". ZME Science. Retrieved October 23, 2026. "* bet Lib – variable star". SIMBAD. Basic data. Centre de Données
Green_star_(astronomy)
Binary star system in the constellation Cetus
variable red giant (Mira A) along with a white dwarf companion (Mira B). Mira A is a pulsating variable star and was the first non-supernova variable
Mira
Cataclysmic variable star, consisting of a close binary star system
(pl. novae), or U Geminorum variable, is one of several types of cataclysmic variable star, consisting of a close binary star system in which one of the
Dwarf_nova
Globular cluster in the constellation Centaurus
writer and astronomer Ptolemy catalogued this object in his Almagest as a star on the centaur's back, "Quae est in principio scapulae". German cartographer
Omega_Centauri
Constellation in the northern celestial hemisphere
"Delta Scuti and the Delta Scuti Variables". Variable Star of the Season. AAVSO (American Association of Variable Star Observers). Retrieved 3 November
Boötes
Red supergiant star in the constellation Orion
brightest in its constellation. It is a distinctly reddish, semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, with a main
Betelgeuse
Star in the constellation Virgo
light-years from the Sun. It is triple star system, containing an inner spectroscopic binary and rotating ellipsoidal variable; a system whose two stars are so
Spica
Constellation in the southern celestial hemisphere
Variable Star Observers. Retrieved 12 March 2014. Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star
Crux
Constellation in the northern celestial hemisphere
dwarfs. T Coronae Borealis, also known as the Blaze Star, is another unusual type of variable star known as a recurrent nova. Normally of magnitude 10
Corona_Borealis
Andrews' Star is a suspected variable star in Auriga (HD 37519 / SAO 58319 / HR 1938). Named after A. David Andrews. Anthelm's Nova/Star is Nova 1670
Stars_named_after_people
Faint constellation on the celestial equator
bluish white variable star and is located at the center of NGC 2264. The variation in its magnitude is slight (4.2–4.6). It has a companion star of visual
Monoceros
Star system in the constellation Taurus
variable and a slowly pulsating B-type star. As of 2025, Alcyone has not been formally listed as a variable star in the General Catalogue of Variable
Alcyone_(star)
Constellation in the northern celestial hemisphere
It is an irregular variable, its apparent magnitude varying between 2.37 and 2.45. Lying near Enif is AG Pegasi, an unusual star that brightened to magnitude
Pegasus_(constellation)
Constellation in the southern celestial hemisphere
Website. American Association of Variable Star Observers. Retrieved 5 February 2014. "Zeta Canis Majoris – Cepheid Variable". SIMBAD Astronomical Database
Canis_Major
Constellation straddling the celestial equator
home to several variable stars. R Hydrae is a Mira variable star 2000 light-years from Earth; it is one of the brightest Mira variables at its maximum
Hydra_(constellation)
Constellation in the northern celestial hemisphere
brightest star, Capella, is an unusual multiple star system and amongst the brightest stars in the night sky. Beta Aurigae is an interesting variable star in
Auriga
Large self-illuminated object in space
the size of the star. This category includes Cepheid and Cepheid-like stars, and long-period variables such as Mira. Eruptive variables are stars that
Star
E. N. (2009-01-01). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+, 2007-2017)". VizieR Online Data Catalog: B/gcvs. Bibcode:2009yCat
List of brightest natural objects in the sky
List_of_brightest_natural_objects_in_the_sky
Variable stars of late spectral types
for this category of variable star system, BY Draconis. They exhibit variations in their luminosity due to rotation of the star coupled with starspots
BY_Draconis_variable
Star in the constellation Canis Major
red hypergiant or red supergiant (O-rich RHG or RSG) and pulsating variable star 1.2 kiloparsecs (3,900 light-years) from the Solar System in the slightly
VY_Canis_Majoris
Zodiac constellation in the northern hemisphere
particularly interesting variable in Aries is SX Arietis, a rotating variable star considered to be the prototype of its class, helium variable stars. SX Arietis
Aries_(constellation)
Star in the constellation Scutum
supergiant or hypergiant star, located 5,900 light-years away in the constellation Scutum. It is also a pulsating variable star, with a maximum brightness
UY_Scuti
Recurrent nova in the constellation Corona Borealis
its variable-star designation and the name most frequently used in the astronomical literature, but it also has the official proper name Blaze Star. The
T_Coronae_Borealis
Red dwarf star in the constellation Ophiuchus
showing that Barnard's Star is a flare star. Barnard's Star has the variable star designation V2500 Ophiuchi. In 2003, Barnard's Star presented the first
Barnard's_Star
Star in the Sunburst galaxy
Godzilla is a variable star candidate in the Sunburst galaxy at redshift z = 2.37 (or 10.9 billion light years from Earth), observed through the gravitational
Godzilla_(star)
Minor constellation in the southern sky
Variables". Variable Star of the Season. AAVSO (American Association of Variable Star Observers). Retrieved 19 June 2013. "V* rho Phe – Variable Star
Phoenix_(constellation)
Constellation in the Southern Celestial Hemisphere
2010). "Delta Scuti and the Delta Scuti Variables". Variable Star of the Season. American Association of Variable Star Observers. Retrieved 21 July 2015. Watson
Corvus_(constellation)
diamond star Cygnus X-1 — X-ray source EBLM J0555-57Ab — is one of the smallest stars ever discovered. GY Andromedae — chemically peculiar variable star MACS
Lists_of_stars
Binary star in the Pleiades star cluster
Pleione is a binary star system in the Pleiades star cluster, within the constellation of Taurus. It has the variable star designation BU Tauri (BU Tau)
Pleione_(star)
Red supergiant star in the constellation Cassiopeia
earliest observations of this star and was adopted by the General Catalogue of Variable Stars. Recent estimates of the star's physical properties, considering
V762_Cassiopeiae
Class of astronomical objects
symbiotic binaries show brightness changes and are classified as variable stars. The star Z Andromedae is often considered the prototype of the symbiotic
Symbiotic_binary
(GCVS database, version 2012Feb)". Retrieved 8 April 2012. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.
List_of_stars_in_Capricornus
Eclipsing variable star in the constellation Perseus
Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to be discovered. Algol is a three-star system
Algol
Type of variable star
variable is a type of variable star in which variations in brightness show no regular periodicity. There are two main sub-types of irregular variable:
Irregular_variable
Constellation in the southern celestial hemisphere
two cepheid variables visible to the naked eye. Theta Muscae is a triple star system, the brightest member of which is a Wolf–Rayet star. Musca was one
Musca
Constellation split into two non-contiguous parts
the barium star 16 Serpentis. Another notable variable star visible to the naked eye is Chi Serpentis, an Alpha² Canum Venaticorum variable situated midway
Serpens
Constellation in the northern celestial hemisphere
intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and
Perseus_(constellation)
Constellation in the northern celestial hemisphere
"Delta Scuti and the Delta Scuti Variables". Variable Star of the Season. AAVSO (American Association of Variable Star Observers). Retrieved 3 November
Canis_Minor
Astronomical principle
pulsating variable stars with their pulsation period. The best-known relation is the direct proportionality law holding for classical Cepheid variables, sometimes
Period–luminosity_relation
Canadian science fiction author (born 1948)
late Robert A. Heinlein to expand it into a novel. The book, titled Variable Star, was released on September 19, 2006. Robinson had previously written
Spider_Robinson
Blue supergiant star in the constellation Cygnus
−9 km/s around the star's mean radial velocity. Other, similar supergiants were found to have variable velocities, with this star being a typical member
Deneb
Star in the constellation Centaurus
Peter M. Corben et al. announced that the star is a variable star, in 1972. It was given its variable star designation, V821 Centauri, in 1981. Jeffery
HD_124448
Topics referred to by the same term
variant, may refer to: X And - X Andromedae, the variable star χ And - Chi Andromedae, the G8III star an alternative name for XNOR, a logic gate Xand van
XAND
2012Feb)". Retrieved 4 April 2012. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014. "Naming Stars". Retrieved 13 December
List_of_stars_in_Canis_Major
Constellation near the celestial equator
It is the second-brightest star in the constellation and is an unconfirmed variable star. ζ Aql (Okab) is a binary star of magnitude 3.0, 83 light-years
Aquila_(constellation)
Zodiac constellation straddling the celestial equator
regions of active star formation, the Taurus-Auriga complex, crosses into the northern part of the constellation. The variable star T Tauri is the prototype
Taurus_(constellation)
Constellation in the northern celestial hemisphere
approximately 2.2 kiloparsecs from the Sun. There is also a supergiant variable star in the system which is known as HDE 226868. Cygnus also contains several
Cygnus_(constellation)
2012-02-27. Retrieved 2010-07-19. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014. "Naming Stars". Retrieved 13 December
List_of_stars_in_Crux
Type of variable star
Beta Cephei variables, also known as Beta Canis Majoris stars, are variable stars that exhibit small rapid variations in their brightness due to pulsations
Beta_Cephei_variable
Binary star in the constellation Cetus
component stars are both flare stars with the variable star designations BL Ceti and UV Ceti. The star system was discovered in 1948 by Willem Jacob Luyten
Gliese_65
Sextuple star system in Gemini
star, with particularly strong spectral lines of certain metals. Castor C is a variable star, classified as a BY Draconis type. BY Draconis variables
Castor_(star)
Class of variable star
Rotating ellipsoidal variables are a class of close binary variable star systems whose components are ellipsoidal. They are not eclipsing, but fluctuations
Rotating_ellipsoidal_variable
Constellation in the northern celestial hemisphere
"Delta Scuti and the Delta Scuti variables". Variable Star of the Season. AAVSO (American Association of Variable Star Observers). Retrieved 8 November
Leo_Minor
of a Constellation from a Position". Retrieved 2006-12-26. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.
List_of_stars_in_Ursa_Minor
Brightest star in the constellation Lyra
lower abundance of elements heavier than helium. Vega is also a variable star—that is, a star whose brightness fluctuates. It is rotating rapidly with a speed
Vega
Constellation in the northern celestial hemisphere
approximately 7.6. It was discovered to be a variable star by Hans Geelmuyden in 1876. The constellation contains the star recently named Kepler-10, which has
Draco_(constellation)
Subclass of pulsating star
A Delta Scuti variable (sometimes termed dwarf cepheid when the V-band amplitude is larger than 0.3 mag.) is a class of pulsating star, comprising several
Delta_Scuti_variable
Red supergiant star in the constellation Cepheus
cluster NGC 7419 in the constellation of Cepheus. It is a semiregular variable star with a maximum brightness of magnitude 14.4 and a minimum of magnitude
MY_Cephei
White dwarf whose luminosity is variable
in 1972, it was given the variable star designation ZZ Ceti. The name ZZ Ceti also refers to this class of pulsating variable white dwarfs, which, as it
Pulsating_white_dwarf
Star in the constellation Lyra
RR Lyrae is a variable star in the constellation Lyra, figuring in its west near to Cygnus. As the brightest star in its class, it became the eponym for
RR_Lyrae
Constellation in the southern celestial hemisphere
brightest star, Alpha Gruis, is also known as Alnair and appears as a 1.7-magnitude blue-white star. Beta Gruis is a red giant variable star with a minimum
Grus_(constellation)
Star in the constellation Cygnus
cool hypergiant star, VY Canis Majoris, and is also known as a heavily mass-losing OH/IR supergiant. It is also a semiregular variable star with a period
NML_Cygni
Type of variable stars
An Orion variable is a variable star which exhibits irregular and eruptive variations in its luminosity and is typically associated with diffuse nebulae
Orion_variable
Hypergiant star in Sagittarius
luminosity making it a candidate luminous blue variable about 1.6 million L☉ (one third as luminous as the binary star system Eta Carinae), hence a radius of
Pistol_Star
Constellation in the southern celestial hemisphere
are RR Caeli, a binary star with one known planet approximately 20.13 parsecs (65.7 ly) away; X Caeli, a Delta Scuti variable that forms an optical double
Caelum
Type of variable star
An SX Phoenicis variable is a type of variable star. These stars exhibit a short period pulsation behavior that varies on time scales of 0.03–0.08 days
SX_Phoenicis_variable
Constellation straddling the celestial equator
Omicron Ceti, a star of the neck of the asterism) was the first variable star to be discovered and the prototype of its class, Mira variables. Over a period
Cetus_(constellation)
Variable star in the constellation Scorpius
BM Scorpii (BM Sco) is a red supergiant and a semiregular variable star located in the constellation Scorpius. It lies approximately 490 parsecs (1,600 ly)
BM_Scorpii
Constellation in the southern celestial hemisphere
lying around 290 light-years distant. It is classified as a semiregular variable star and its brightness varies from magnitude +4.75 to +4.93. Described by
Tucana
Constellation in the southern celestial hemisphere
variable or shell star, it is of spectral type B2II-IIIe and lies around 1430 light years distant from Earth. Kappa Pavonis is a W Virginis variable—a
Pavo_(constellation)
Star in the constellation Pegasus
direct imaging. The star is a Gamma Doradus variable: its luminosity changes because of non-radial pulsations of its surface. The star is also classified
HR_8799
Star in the constellation Ophiuchus
70 Ophiuchi itself is Zōng Rén sì (宗人四), the fourth star of Zōng Rén. 70 Ophiuchi is a variable star with a magnitude range for the two stars combined of
70_Ophiuchi
Constellation in the southern celestial hemisphere
being an Alpha Cygni variable, with a magnitude range of 4.87–4.98. QU Normae is another hot blue-white star that is a variable, ranging from magnitude
Norma_(constellation)
Star in the constellation Dorado
R Doradus (HD 29712 or P Doradus) is a red giant variable star in the far-southern constellation Dorado, close to the border with Reticulum. Its distance
R_Doradus
Constellation in the southern celestial hemisphere
variable that varies from magnitude +4.66 to +4.87, with pulsations of multiple periods of 68.0, 94.9 and 101.7 days. Delta2 is an orange giant star of
Apus
Constellation in the southern celestial hemisphere
Puppis is a particularly luminous cepheid variable star that is embedded in a reflection nebula. The star has a six-week long regular cycle of brightness
Puppis
travel, tourism, insurance
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
VARIABLE STAR
travel, tourism, insurance