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Stellar classification
An A-type main-sequence star is a main-sequence (core hydrogen burning) star of spectral type A. The spectral luminosity class is V. These stars have spectra
A-type_main-sequence_star
Stellar classification
A G-type main-sequence star is a main-sequence star of spectral type G. The spectral luminosity class is V. Such a star has about 0.9 to 1.1 solar masses
G-type_main-sequence_star
Stellar classification
A K-type main-sequence star is a main-sequence (core hydrogen-burning) star of spectral type K. The spectral luminosity class is V. These stars are intermediate
K-type_main-sequence_star
Stellar classification
An F-type main-sequence star is a main-sequence, core-hydrogen-fusing star of spectral type F. The spectral luminosity class is V. They have from around
F-type_main-sequence_star
Main-sequence star of spectral type O
O-type main-sequence star is a main-sequence—core hydrogen-burning—star of spectral type O. The spectral luminosity class is V, although class O main sequence
O-type_main-sequence_star
Stellar classification distinguished by bright blue luminosity
Hypergiants absolute magni- tude (MV) A B-type main-sequence star is a main-sequence (core hydrogen-burning) star of spectral type B. The spectral luminosity class
B-type_main-sequence_star
Dim, low mass stars on the main sequence
A red dwarf is the least massive, smallest, least luminous, and coolest kind of star on the main sequence. Red dwarfs are by far the most common type
Red_dwarf
Continuous band of stars that appears on plots of stellar color versus brightness
star F-type main-sequence star G-type main-sequence star K-type main-sequence star M-type main-sequence star M-type (and, to a lesser extent, K-type)
Main_sequence
Likelihood of finding extraterrestrial life in yellow dwarf systems
remain in the main sequence for approximately 10 billion years. After the Sun, the closest G-type star to the Earth is Alpha Centauri A, 4.4 light-years
Habitability of G-type main-sequence star systems
Habitability_of_G-type_main-sequence_star_systems
Prospects for habitable planets orbiting a type-F star
F-type main-sequence stars are thought to possibly be the hottest and most massive stars capable of hosting a planet with complex extraterrestrial life
Habitability of F-type main-sequence star systems
Habitability_of_F-type_main-sequence_star_systems
Star in the stage when it has not yet reached the main sequence
A pre-main-sequence star (also known as a PMS star and PMS object) is a star in the stage when it has not yet reached the main sequence. Earlier in its
Pre-main-sequence_star
K-type main-sequence stars, also known as orange dwarfs or Goldilocks stars, may be candidates for supporting extraterrestrial life. Due to their smaller
Habitability of K-type main-sequence star systems
Habitability_of_K-type_main-sequence_star_systems
Topics referred to by the same term
White main-sequence star may refer to: A-type main-sequence star, main sequence stars ranging from 7,600 to 10,000 K F-type main-sequence star, main sequence
White_main-sequence_star
Topics referred to by the same term
Blue main-sequence star may refer to: O-type main-sequence star, main sequence stars ranging above 30,000 K B-type main-sequence star, main sequence stars
Blue_main-sequence_star
Star in the constellation Centaurus
HIP 65426, also named Matza, is an A-type main-sequence star about 351 light-years (108 parsecs) away in the constellation Centaurus. With an apparent
HIP_65426
Unconfirmed potentially habitable exoplanet
KOI-4878.01 is an exoplanet candidate that orbits the G-type main-sequence star KOI-4878. It is 1,120 light-years (344 pc) distant from Earth. The features
KOI-4878.01
spectral type List of nearest bright stars List of nearest giant stars List of nearest supergiants List of nearest hypergiants List of star systems within
Lists_of_stars
Brightest star in the constellation Aquila
from α Aquilae and abbreviated Alpha Aql or α Aql. Altair is an A-type main-sequence star with an apparent visual magnitude of 0.77 and is one of the vertices
Altair
B-type star in the constellation Eridanus
24626) is a B-type main-sequence star in the constellation Eridanus. With an apparent magnitude of 5.11, it is faintly visible to the naked eye on a clear
I_Eridani
Stellar classification
An O-type star is a hot, blue star of spectral type O in the Yerkes classification system employed by astronomers. They have surface temperatures in excess
O-type_star
Topics referred to by the same term
types of stars having a peak emission in blue or ultraviolet. Those can be: A blue compact dwarf galaxy An early-type main-sequence star B-type main-sequence
Blue_dwarf
known 133 objects are bound in 95 stellar systems. Of those, 103 are main sequence stars: 78 red dwarfs and 25 "typical" stars having greater mass. Additionally
List_of_nearest_stars
Overview of the scientific field of astronomy
O-type main-sequence star B-type main-sequence star A-type main-sequence star F-type main-sequence star G-type main-sequence star K-type main-sequence star
Outline_of_astronomy
Triple star system in the constellation Eridanus
Eridani A on 12 September 2016 and it is now so included in the List of IAU-approved Star Names. 40 Eridani A is a main-sequence dwarf of spectral type K0
40_Eridani
Constellation near the celestial equator
companion stars which orbit the supergiant: a B-type main sequence star and an F-type main sequence star. ε Aql (proper name is Arin-majlep since 18 June
Aquila_(constellation)
Topics referred to by the same term
Type G or G type may refer to: G-Type, a fictional character from Marvel Comics the type G plug a G-type main-sequence star a G-type asteroid a type of
Type_G
Closest known white dwarf star to Earth
estimated to have been a B-type main-sequence star of class B5V. The higher mass means Sirius B used to be more luminous than Sirius A, so it burned the hydrogen
Sirius_B
A-type main-sequence star in constellation Gemini
is an A-type main-sequence star located approximately 510 light-years from Earth in the constellation of Gemini. It is a relatively bright star with an
85_Geminorum
Topics referred to by the same term
a column called an annulus in oil wells Apparent viscosity, shear stress divided by shear rate A-type main-sequence star, in astronomy, abbreviated A
AV
F-type star
A, is the primary star of the n Puppis system. It has an apparent magnitude of 5.83 and forms a binary star system with HD 60585, another F-type main
HD_60584
Red dwarf star in the constellation Ophiuchus
the List of IAU-approved Star Names. Barnard's Star is a red dwarf of the dim spectral type M4 and is too faint to see without a telescope; its apparent
Barnard's_Star
Star in Auriga
HD 33632 is an F-type main-sequence star with a brown dwarf companion located in the constellation of Auriga. The brown dwarf was directly imaged in mid
HD_33632
Topics referred to by the same term
G-type may refer to: G-type star, a stellar spectral classification G-type giant, a large evolved star of spectral class G G-type main sequence star, a
G-type
Possible factors for life around red dwarf stars
main-sequence star systems Habitability of K-type main-sequence star systems Habitability of neutron star systems Habitability of G-type main-sequence star
Habitability of red dwarf systems
Habitability_of_red_dwarf_systems
Red dwarf star in the constellation Centaurus
is a K-type or M-type main-sequence star located in the constellation of Centaurus which was mistaken for an exoplanet orbiting the quadruple-star system
HD_131399_Ab
Large self-illuminated object in space
lose over half their total mass while on the main sequence. The time a star spends on the main sequence depends primarily on the amount of fuel it has
Star
F0-type star
TOI-1518 is a F0-type main sequence star located in the Constellation of Cepheus around 747 light-years from Earth. TOI-1518b is the only known planet
TOI-1518
Heterogeneous class of stars with unusual spectra
spectral types, due to weaker winds not entirely masking the photosphere. The maximum mass of a main-sequence star that can evolve through a red supergiant
Wolf–Rayet_star
Disproven exoplanet orbiting Alpha Centauri B
Alpha Centauri Bb (α Cen Bb) was a proposed exoplanet orbiting the K-type main-sequence star Alpha Centauri B (Toliman), located 4.37 light-years from
Alpha_Centauri_Bb
Comet outside the Solar System
detected in 1987 around Beta Pictoris, a very young A-type main-sequence star. There are now (as of February 2019) a total of 27 stars around which exocomets
Exocomet
Second brightest star in the Leo constellation
Leonis, which are abbreviated Beta Leo or β Leo. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity
Denebola
Binary star in the constellation Phoenix
arcseconds from the main pair. The closer (Zeta Phoenicis B) is an A-type main-sequence star with an orbital period around the main pair of about 210 years
Zeta_Phoenicis
B-type main-sequence star
a star in Cepheus with an apparent magnitude of 5.258 and a spectral type of B9.5 Vn, indicating that it is a B-type main sequence star, giving it a blue
HD_212710
Binary star in the constellation Aquarius
classification of this star is A3V, matching an A-type main-sequence star. The star is about 600 million years old and is spinning rapidly with a projected rotational
Omega1_Aquarii
Type of hot, massive star
an OB association so thus of early type".[dubious – discuss] O-type main-sequence star B-type main-sequence star Stellar kinematics M. Pantaleoni González
OB_star
Triple stellar system in the constellation Orion
star) and a hot secondary, which is a binary star formed from a B-type main-sequence star and an A-type main-sequence star. A 2021 estimate derive a distance
HD_39118
Star in the constellation Grus
S5-HVS1 is an A-type main-sequence star notable as the fastest one detected as of November 2019, and has been determined to be traveling with a peculiar velocity
S5-HVS1
Index of articles associated with the same name
Arietis), an A-type main sequence star. ρ² Arietis (45 Arietis), an M-type giant star. ρ³ Arietis (46 Arietis), an F-type main sequence star. In some instances
Rho_Arietis
F-type star
secondary star of the n Puppis system. It has an apparent magnitude of 5.87 and is a binary star system with HD 60584, another F-type main sequence star. "HR
HD_60585
Super Jupiter orbiting Beta Pictoris
(abbreviated as β Pic b) is an exoplanet orbiting the young debris disk, A-type main sequence star, Beta Pictoris located approximately 63 light-years (19.4 parsecs
Beta_Pictoris_b
Star of relatively small size and low luminosity
A dwarf star is a star of relatively small size and low luminosity. All main-sequence stars are dwarf stars. The meaning of the word "dwarf" has been
Dwarf_star
Star in the constellation Centaurus
435) is a nearby K-type main-sequence star located in the constellation Centaurus, approximately 41.7 light-years (12.8 parsecs) away, based on a parallax
HD_101581
Terrestrial planet orbiting the star Proxima Centauri
effective temperature of 3,050±100 Kelvin, it has a spectral type of M5.5V, making it an M-type main-sequence star that is fusing hydrogen at its core to generate
Proxima_Centauri_b
Extrasolar planet in the constellation Triangulum Australe
HD 147018 b is a gas giant extrasolar planet which orbits the G-type main sequence star HD 147018, located approximately 140 light years away in the constellation
HD_147018_b
Star in the constellation Andromeda
A-type main-sequence star with a stellar classification of A0 V. Abt and Morrel (1995) gave it a class of A1 III, matching a more evolved giant star.
62_Andromedae
Star in the constellation Eridanus
WASP-22, also named Tojil, is a G-type main-sequence star about 1,030 light-years (320 parsecs) away in the constellation Eridanus. With an apparent magnitude
WASP-22
Classification of stars based on spectral properties
then G2V, indicating a main-sequence star with a surface temperature around 5,800 K. Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs
Stellar_classification
Binary star in Carina
(MASCARA-4) is a binary star system in the constellation of Carina. The host star, HD 85628 A, is an A-type main-sequence star, the primary star of the system
HD_85628
G-type main-sequence star with one exoplanet
also named Funi, is a G-type main-sequence star in the constellation Draco. It is located 222 light-years from the Sun. The star hosts one known exoplanet
HD_109246
Binary system containing the closest known black hole to Earth
Gaia BH1 (Gaia DR3 4373465352415301632) is a binary system consisting of a G-type main-sequence star and a stellar-mass black hole, located about 1,560
Gaia_BH1
Subdwarf star in the constellation Pictor
which indicates that it is a subdwarf with a luminosity lower than that of a main-sequence star at the same spectral type of M1. The abundance of elements
Kapteyn's_Star
Nearest star to the Solar System
Proxima's relatively low energy-production rate, mean that it will be a main-sequence star for another four trillion years. Proxima Centauri has two known exoplanets
Proxima_Centauri
Star in the constellation Lacerta
The star is moving closer to the Earth with a heliocentric radial velocity of −4.5 km/s. This is an ordinary A-type main-sequence star with a stellar
Alpha_Lacertae
Index of articles associated with the same name
Crateris, HD 93397), an F-type main-sequence star b2 Hydrae, (5 Crateris, 249 G. Hydrae, HD 94046), an A-type main-sequence star b3 Hydrae, (6 Crateris,
B_Hydrae
Star system in the constellation Taurus
hued primary, component Aa, is a B-type main-sequence star with a stellar classification of B3V. It was found to be a close spectroscopic binary in 1903
Tau_Tauri
Star at the centre of the Solar System
a G-type main-sequence star that makes up about 99.86% of the mass of the Solar System. The Sun is classed as a G2 star, meaning it is a G-type star,
Sun
Star in the constellation Cancer
Supercluster. The visible component of this system is an ordinary A-type main-sequence star with a stellar classification of A9 V, which indicates it is generating
20_Cancri
Star in the constellation Cassiopeia
HD 7977 is a G-type main-sequence star located in the constellation of Cassiopeia, around 246.9 light-years away from Earth. HD 7977 is notable for its
HD_7977
Star in the constellation Taurus
as A9V or A7IV-V, indicating an A-type main-sequence star or possibly a subgiant. It is a rapidly rotating star, with a projected rotational velocity of
97_Tauri
Star in the constellation Taurus
IAU-approved Star Names. Asterope is a blue-white hued B-type main sequence star with a stellar classification of B8 V. It is a single star with around
Asterope_(star)
Star in the constellation Serpens
Tau8 Serpentis, Latinized from τ8 Serpentis, is an A-type main sequence star in the constellation of Serpens, approximately 364 light-years from the Earth
Tau8_Serpentis
Star in the constellation Coma Berenices
consists of two stars, an evolved G-type giant star and a smaller but higher temperature A-type main-sequence star. Griffin and Griffin (2011) suggested
12_Comae_Berenices
Star system in the constellation Volans
TOI-791 is an F-type main-sequence star located approximately 1,113 light-years from Earth in the constellation of Volans. At a visual apparent magnitude
TOI-791
Wide binary star system in the constellation of Draco
primary star is an early A-type main-sequence star, having 2.12 times the mass of the Sun with a visual magnitude of 5.06. The secondary is a magnitude
39_Draconis
Star in the constellation Camelopardalis
Gliese 445 (Gl 445 or AC +79 3888) is an M-type main sequence star in the northern part of the northern circumpolar constellation of Camelopardalis. Gliese
Gliese_445
Class of young variable stars
they are main sequence objects. Planets around T Tauri stars include: 1RXS J160929.1−210524b around a K-type star PDS 70b around a K-type star Orion variable
T_Tauri_star
Star in the constellation Aquila
white-hued star shows it to match a stellar classification of A2 V, indicating it is an A-type main sequence star. (A 2001 study found a discrepant class
Omega2_Aquilae
Star in the constellation Canis Minor
convection zone. It has a stellar classification of M3.5V, with the V luminosity class indicating this is a main-sequence star that is generating energy
Luyten's_Star
O-type dwarf star in the Omega Nebula
CEN 16, also known as ALS 19608, is a O-type main sequence star in the constellation of Sagittarius. The star is located in the center of the Omega Nebula
CEN_16
Star in the constellation Aries
this star is approximately 255 light-years (78 parsecs). It is receding from the Sun with a radial velocity of +7 km/s. This is an A-type main sequence star
Zeta_Arietis
Multiple star system in the constellation Eridanus
a 45 million year old set of stars that share a common motion through space. The brighter component, HD 24072, is a B-type main-sequence star with a classification
F_Eridani
Binary star system in the constellation Fornax
an A-type main-sequence star with a class of A3V. It is smaller than the primary, but has a higher projected rotational velocity. Brown, A. G. A.; et al
Omega_Fornacis
Star in Ursa Major
magnitude of the primary star is +8.33. The star's age is estimated to be about 2.8 billion years. As an F-type main-sequence star, it is similar to the
KELT-24
Star in the constellation Canes Venatici
magnitude 6.95 A-type main-sequence star with a class of A8 V:. The ':' suffix indicates some uncertainty in the classification of this star. This star was part
25_Canum_Venaticorum
Red dwarf star in the constellation Aries
Teegarden's Star /ˈtiːɡɑːrdənz/ (SO J025300.5+165258, 2MASS J02530084+1652532, LSPM J0253+1652) is a red dwarf star in the constellation Aries, 12.5 light-years
Teegarden's_Star
Topics referred to by the same term
I Type O in the ABO blood group system an O-type star an O-type main-sequence star an O-type giant star a subdwarf O star the Handley Page Type O, a biplane
Type_0
Star system in the Centaurus constellation
is a main-sequence star of spectral type K1-V, making it more an orange colour than Alpha Centauri A; it has around 90% of the mass of the Sun and a 14%
Alpha_Centauri
Star in the constellation Libra
also a B-type main-sequence star, with a spectral type B9V and a mass 2.75 times that of the Sun. The third component, Tau Librae C, is an A-type main-sequence
Tau_Librae
Topics referred to by the same term
G star or G-star may refer to: Stellar classification#Class G, a type of star. G-type main-sequence star, also called a G V star, a subtype of this type
G_star_(disambiguation)
M-Type main sequence star in the constellation Cetus
2MASS J01225093−2439505 is a M-type main-sequence star. Its surface temperature is 3530±50 K. 2MASS J01225093−2439505 is much younger than the Sun at
2MASS_J01225093−2439505
Sub-Earth orbiting Proxima Centauri
Proxima d) is a confirmed exoplanet orbiting the red dwarf star Proxima Centauri, the closest star to the Sun and part of the Alpha Centauri triple star system
Proxima_Centauri_d
Extrasolar planet in the constellation Sextans
known as HIP 49067 c) is an extrasolar planet which orbits the K-type main sequence star BD−08°2823, located approximately 135 light years away in the constellation
BD−08°2823_c
Star in the constellation Draco
EK Draconis (EK Dra) is a young active G-type main-sequence star located in the constellation of Draco. It is located approximately 112 light-years away
EK_Draconis
Star in the constellation Ursa Major
This is a main sequence star of spectral type K7.5 Ve, having just 67% of the Sun's mass. This star was first identified as entry 1618 in the work A Catalog
Groombridge_1618
Young stars of spectral types A and B
A Herbig Ae/Be star (HAeBe) is a pre-main-sequence star – a young (<10 Myr) star of spectral types A or B. These stars are still embedded in gas-dust envelopes
Herbig_Ae/Be_star
Gas giant exoplanet orbiting TOI-4127
TOI-4127 b is a confirmed gas giant type exoplanet orbiting the faint F-type main-sequence star TOI-4127, about 1,042 light years away from earth. The
TOI-4127_b
Star in the constellation Hydra
WASP-166, also named Filetdor, is an F-type main-sequence star 373 light-years (114 parsecs) away in the constellation Hydra. With an apparent magnitude
WASP-166
Star in the constellation Sculptor
Uúba, is a G-type main-sequence star located 264 light-years (81 parsecs) away from the Solar System in the constellation of Sculptor. The star is about
LTT_9779
Star in the constellation Hercules
component A, is an A-type main-sequence star with a stellar classification of A2V. It is 155 million years old with 2.12 times the mass of the Sun. The star is
69_Herculis
Index of articles associated with the same name
a B-type main-sequence star η2 Hydri, also HD 11977, a G-type main-sequence star with an exoplanet (η2 Hydri b) This set index article includes a list
Eta_Hydri
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A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
A TYPE-MAIN-SEQUENCE-STAR
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