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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
Constellation straddling the celestial equator
Belt asterism. Orion also hosts the radiant of the annual Orionids, the strongest meteor shower associated with Halley's Comet, and the Orion Nebula, one
Orion_(constellation)
This is the list of notable stars in the constellation Orion, sorted by decreasing brightness. List of stars by constellation ESA (1997). "The Hipparcos
List_of_stars_in_Orion
Class of young variable stars
J160929.1−210524b around a K-type star PDS 70b around a K-type star Orion variable EX Lupi P Cygni profile Appenzeller, I; Mundt, R (1989). "T Tauri stars"
T_Tauri_star
T Tauri star; Chamaeleon
association or the slightly older η Chamaeleontis association. T Cha is an Orion variable that fluctuates between 10.05 and 14.5. T Cha has a stellar classification
T_Chamaeleontis
Star whose brightness fluctuates, as seen from Earth
irregular variables are so-named because many were first located in the Orion Nebula. A well-known subtype of Orion variables are the T Tauri variables. Variability
Variable_star
there are over 52,011 known variable stars, with more being discovered regularly, so a complete list of every single variable is impossible at this place
List_of_variable_stars
Type of variable star
codes were used "nebular" or "rapidly irregular" variable stars such as T Tauri and Orion variables. The remaining irregular stars, cool slowly varying
Slow_irregular_variable
Star in the constellation Orion
slightly variable magnitude of around 1.6, it is typically the 25th-brightest star in the night sky. It is the closest major star in Orion at only 244
Bellatrix
Multiple star system in the constellation Orion
star system in the equatorial constellation of Orion the hunter. It is the eighth-brightest member of Orion with an apparent visual magnitude of 2.77 and
Iota_Orionis
Telescope accessory used to improve details of viewed objects
original on 7 July 2011. Retrieved 9 March 2011. "Orion variable polarizing telescope filters". Orion Telescopes & Binoculars. Archived from the original
Astronomical_filter
Overview of the scientific field of astronomy
RV Tauri variable Alpha Cygni variable Pulsating white dwarf Eruptive Pre-main sequence star Herbig Ae/Be Orion variable FU Orionis star Main Sequence
Outline_of_astronomy
Type of variable star
subgroups IA (spectral types O to A) and IB (spectral types F through M). Orion variables, GCVS type IN (irregular and nebulous), indigenous to star-forming
Irregular_variable
Constellation split into two non-contiguous parts
state. The star also appears to possess a circumstellar disk. Another Orion variable in the region is VV Serpentis, a Herbig Ae star that has been found
Serpens
Star in the constellation Orion
brighter than 10th magnitude in the region. V1073 Orionis is a B9.5 Orion variable that forms an equilateral triangle with θ2 Ori B and C. Bizarrely, θ2
Theta2_Orionis
Star in the constellation Orion
V380 Ori is a young multiple star system located near the Orion Nebula in the constellation Orion, thought to be somewhere between 1 and 3 million years
V380_Orionis
"General Catalog of Variable Stars (GCVS database, version 2012Apr)". Retrieved 2013-03-24. "AAVSO Website". American Association of Variable Star Observers
List_of_stars_in_Chamaeleon
Star in the constellation Auriga
a variable star by Daniel Walter Morehouse, in 1923, and received its variable star designation in 1924. It is classified as an Orion type variable star
AE_Aurigae
Brightest star in the constellation Orion
is the first bright star of Orion visible as the constellation rises. Correspondingly, it is also the first star of Orion to set in most of the Northern
Rigel
Star-forming region in the constellation Orion
The Orion molecular cloud complex (or, simply, the Orion complex) is a star-forming region with stellar ages ranging up to 12 Myr. Two giant molecular
Orion_molecular_cloud_complex
Binary star system in the constellation Sagittarius
its variable star designation, V3903 Sagittarii, in 1977. The General Catalogue of Variable Stars lists it as a possible hot irregular Orion variable star
V3903_Sagittarii
Catalogue of Variable Stars (GCVS4.2)". Retrieved 10 April 2012. Samus, N. N.; Durlevich, O. V.; et al. (2012). "General Catalog of Variable Stars (GCVS
List_of_stars_in_Cassiopeia
Quadruple star system in the constellation Orion
classified as "INSA" in the General Catalogue of Variable Stars. This acronym means that it is an Orion variable – a hot star with irregular variation – surrounded
NU_Orionis
Blue supergiant in the constellation of Orion
the sixth-brightest star in the constellation of Orion. Of the four bright stars that compose Orion's main quadrangle, it is the star at the south-eastern
Saiph
Discontinued US research program on the viability of nuclear pulse propulsion
Supporters of Project Orion felt that it had potential for cheap interplanetary travel. From Project Longshot to Project Daedalus, Mini-Mag Orion, and other proposals
Project Orion (nuclear propulsion)
Project_Orion_(nuclear_propulsion)
Star in the constellation Orion
Theta1 Orionis A (θ1 Ori A) is a variable trinary star in the constellation Orion. Its apparent magnitude range is 6.72 to 7.65 with a period of 65.432
Theta1_Orionis_A
Star in the constellation Orion, in the center of the Orion's Belt
Alnilam is the central star of Orion's Belt in the equatorial constellation of Orion. It has the Bayer designation ε Orionis, which is Latinised to Epsilon
Alnilam
Small family car
ten-year production life. The Ford Orion was based on the Ford Escort, but instead of the Escort's hatchback, the Orion had a separate boot, making it a
Ford_Orion
Variable star in the constellation Orion
FU Orionis is a variable and binary star system in the constellation of Orion, that in 1937 rose in apparent visual magnitude from 16.5 to 9.6, and has
FU_Orionis
Archived from the original on 2012-02-27. Retrieved 2010-07-19. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.
List of stars in Corona Australis
List_of_stars_in_Corona_Australis
Archived from the original on 2012-02-27. Retrieved 2010-07-16. "AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.
List_of_stars_in_Monoceros
Binary star system in the constellation Carina
variable star. It was given its variable star designation, V640 Carinae, in 2008. The General Catalogue of Variable Stars classifies it as an Orion variable
HD_87643
Nova seen in 1678
V529 Orionis, also known as Nova Orionis 1678, is a variable star which is usually classified as a nova. It was discovered on 28 March 1678 by Johannes
V529_Orionis
Pre-main-sequence star in the constellation Lupus
probably not actively accreting, but there is evidence that the accretion is variable around IM Lupi. The young star is associated with the Lupus 2 Molecular
IM_Lupi
Eclipsing binary brown dwarf in the Orion Nebula
2M0535-05 and also known by its variable star designation V2384 Orionis, is a young eclipsing binary brown dwarf system in the Orion Nebula, about 1,200 light-years
2MASS_J05352184−0546085
Star in the constellation Orion
Upsilon Orionis (υ Ori, υ Orionis) is a star in the constellation Orion. It has the traditional name Thabit /ˈθeɪbɪt/ or Tabit (ﺛﺎﺑﺖ, Arabic for "the
Upsilon_Orionis
Star in the constellation Orion
Ross 47 is a variable star of spectral type M4 located in the constellation Orion. Based on parallax measurements, it lies 18.888 light-years (5.791 parsecs)
Ross_47
Variable star system in Taurus
entitled HP Tau/G2, and HP Tau/G3, respectively). HP Tauri is a T Tauri variable star. The star system is located in the Taurus molecular cloud and nebula
HP_Tauri
Asterism in the constellation Orion
rolls by." The Orion constellation, with Orion's sword distinguished by M42. How Orion appears in a clear sky. M42, and thus Orion's sword, is one of
Orion's_Sword
Protostar in the Orion constellation
of Orion. It is associated with IC 430 (Haro 13A), a peculiar Hα object surveyed by Guillermo Haro in 1952. It is assumed to be a member of the Orion Nebula
V883_Orionis
Catalogue of Variable Stars (GCVS4.2)". Retrieved 2012-04-03. Samus, N. N.; Durlevich, O. V.; et al. (2012). "General Catalog of Variable Stars (GCVS database
List_of_stars_in_Auriga
Open cluster in the Orion Nebula in the constellation Orion
is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. It was discovered by Galileo Galilei. On 4 February
Trapezium_Cluster
Five-star system in the constellation Orion
Sigma Ori (σ Orionis, σ Ori) is a multiple star system in the constellation Orion, consisting of the brightest members of a young open cluster. It is found
Sigma_Orionis
Constellation in the southern celestial hemisphere
below—immediately south—of Orion (the hunter), and is sometimes represented as a hare being chased by Orion or by Orion's hunting dogs. Although the hare
Lepus_(constellation)
Red supergiant star in the constellation Orion
and Orion over Monument Valley skyscape showing the relative brightness of Betelgeuse and Rigel Orion: head to toe breathtaking vista the Orion molecular
Betelgeuse
Young binary star system in the constellation Ophiuchus
Scorpius–Centaurus star-forming region.[citation needed] "ASAS-SN Variable Stars Database". ASAS-SN Variable Stars Database. ASAS-SN. Retrieved 6 January 2022. Vallenari
HD_150193
Variable star in the constellation Orion
(abbreviated U Ori) is a Mira-type variable star in the constellation Orion. It is a classical long period variable star that has been well observed for
U_Orionis
Star in the constellation Orion
is an eclipsing binary located in the belt region of the constellation Orion. It is a faint naked eye star. The brightness of VV Orionis dips regularly
VV_Orionis
Variable star in the constellation Orion
V901 Orionis is a variable star in the equatorial constellation of Orion. It is sometimes known as Landstreet's Star and has the designation HD 37776 from
V901_Orionis
Star in the constellation Orion
apparent brightness it ranks, within Orion, admitting the higher published mean brightness of much more variable stars ranked above it, 35th.[citation
Chi2_Orionis
Young stellar object in the constellation Monoceros
Monoceros. HD 259431 lies in the northern portion of Monoceros, between Orion and Canis Minor, along with the spectacular Rosette Nebula and NGC 2264
HD_259431
Star in the constellation Orion
Eta Orionis is a multiple star in the constellation Orion. It lies a little to the west of Orion's Belt between Delta Orionis and Rigel, being closer to
Eta_Orionis
Reciprocating internal combustion engine
The Mitsubishi Orion or 4G1 engine is a series of inline-four internal combustion engines introduced by Mitsubishi Motors in around 1977, along with the
Mitsubishi_Orion_engine
Binary star in the constellation Orion
is a spectroscopic binary star system in the constellation of Orion. It has the variable-star designation V1149 Orionis (abbreviated to V1149 Ori). With
V1149_Orionis
Star in the constellation Taurus
spectral class of F2 for this star, and by 1973 it was classed as an Orion variable of the T Tauri type. In 1968, W. Götz and W. Wenzel discovered a faint
CQ_Tauri
Variable star in the constellation Orion
also known as 59 Orionis, V1004 Orionis and HR 2100, is a variable star in the constellation Orion. Its apparent magnitude varies between magnitude 5.88 and
HD_40372
"Identification 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_Vulpecula
FU Orionis-type star in the constellation Orionis
Orionis (V1647 Ori) is a young stellar object visible in the constellation Orion, located about 1470 light-years from the Solar System. It is situated in
V1647_Orionis
Variable quadruple star system in the constellation Orion
eclipsing variable and one of the youngest known eclipsing binary systems. θ1 Orionis B varies in brightness and has been given the variable star designation
Theta1_Orionis_B
Star system in the constellation Taurus
region of Taurus, an equatorial constellation. This is a T Tauri-type variable star that ranges in apparent visual magnitude from 10.59 down to 10.95
V773_Tauri
Herbig Ae/Be star in the constellation Chamaleon
classified as an Orion variable. It was given the variable star designation CU Chamaeleontis in 1981. Its spectrum is also variable. The spectral class
HD_97048
Star in the constellation Canis Major
MWC 137 is a supergiant star in the equatorial constellation of Orion. It has the variable star designation V1308 Ori; MWC 137 is from the Mount Wilson Catalogue
MWC_137
Zodiac constellation in the southern celestial hemisphere
several myths associated with Scorpius attribute it to Orion. According to one version, Orion boasted to the goddess Artemis and her mother, Leto, that
Scorpius
Star in the constellation Orion
also named Tabit /ˈteɪbɪt/, is a star in the equatorial constellation of Orion. At an apparent visual magnitude of 3.16, it is readily visible to the naked
Pi3_Orionis
Type of eruptive variable star
protostar V1647 Orionis, which erupted in January 2004. Orion variable T Tauri star EX Lup variable star (also called an EXor) Clarke, C.; Lodato, G.; Melnikov
FU_Orionis_star
Catalogue of Variable Stars (GCVS4.2)". Retrieved 2012-07-12. Samus, N. N.; Durlevich, O. V.; et al. (2012). "General Catalog of Variable Stars (GCVS database
List_of_stars_in_Cepheus
Variable star in the constellation Orion
HD 43317 is a variable star in the equatorial constellation of Orion, the hunter. It has an apparent visual magnitude of 6.63, which is faint enough to
HD_43317
Red dwarf star in the constellation Orion
apparent magnitude of 8.9. It is 37 light years away in the constellation of Orion. It is an extremely wide binary with 2MASS J0536+1117, an M4 star 2.6 arcminutes
Gliese_208
Uranium-rich oxide mineral
uranium-rich mineral and ore with a chemical composition that is largely UO2 but because of oxidation typically contains variable proportions of U3O8. Radioactive
Uraninite
Infrared emitting object in the constellation Orion
the Orion molecular cloud 1 (OMC1). It was discovered in 1967 by Eric Becklin and Gerry Neugebauer during their near-infrared survey of the Orion Nebula
Becklin–Neugebauer_Object
Star in the constellation Orion
fifth-magnitude star in the constellation Orion. It lies among a dense cluster of low-mass pre-main-sequence stars in the Orion OB1a. 25 Orionis is the dominant
25_Orionis
Spectroscopic binary star system in the constellation Orion
Orionis (π5 Ori, π5 Orionis) is a binary star system in the constellation Orion. It has an apparent visual magnitude of 3.69, which is bright enough to
Pi5_Orionis
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
Young protostar system
young Herbig Ae/Be star in the constellation of Orion about 1250 light years away, within the Orion Nebula. It is the most massive star of the small
BF_Orionis
Young flame star in the constellation of Orion
equatorial constellation of Orion. It has the identifier GJ 182 in the Gliese–Jahreiß catalogue; V1005 Ori is its variable star designation. This star
V1005_Orionis
Catalogue of Variable Stars (GCVS4.2)". Retrieved 2012-04-08. Samus, N. N.; Durlevich, O. V.; et al. (2012). "General Catalog of Variable Stars (GCVS database
List_of_stars_in_Carina
Star in the constellation Orion
11 Orionis is a solitary Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent
11_Orionis
Star in the constellation Orion
π6 Orionis) is a solitary star in the eastern part of the constellation Orion. It is visible to the naked eye with an apparent visual magnitude of 4.469
Pi6_Orionis
Unique identifier given to variable stars
(e.g. Centaurus becomes Centauri, Orion becomes Orionis) to get the star name. In the early 19th century few variable stars were known, so it seemed reasonable
Variable-star_designation
Star in the Taurus constellation
of other variable star classes. These are potentially Maia variables. It is now thought Maia is not a Maia variable, but a rotating variable. Maia is
Maia_(star)
Variable star in the constellation Orion
Omega Orionis (ω Ori) is a single star in the constellation Orion. Its apparent magnitude is 4.57 and is located approximately 1,400 light-years from
Omega_Orionis
Body of interstellar clouds
the Orion Nebula using a telescope. This nebula was also observed by Johann Baptist Cysat in 1618. However, the first detailed study of the Orion Nebula
Nebula
Variable star in the constellation Orion
UX Orionis is a variable star in the constellation of Orion. It is a Herbig Ae star, located about 1,000 light-years from Earth. At its brightest it is
UX_Orionis
Molybdate mineral
brown, although the color can be highly variable. In its yellow form it is sometimes called "yellow lead ore". It crystallizes in the tetragonal system
Wulfenite
Multiple star in the constellation Orion
perhaps photoevaporating) the Orion Nebula. This UV light is also the primary cause of the glow that illuminates the Orion Nebula. The star emits a powerful
Theta1_Orionis_C
Star in the constellation Orion
W Orionis is a carbon star in the constellation Orion, approximately 400 parsecs (1,300 ly) away. It varies regularly in brightness between extremes of
W_Orionis
Average value of a random variable
generalization of the weighted average. The expected value of a random variable with a finite number of outcomes is a weighted average of all possible
Expected_value
Propeller with blades that can be rotated to control their pitch while in use
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch
Variable-pitch propeller (marine)
Variable-pitch_propeller_(marine)
Combustion engine technology
Hiroyasu; Katsumoto, Takehiko; Danno, Yoshiaki (1983). "Mitsubishi Orion-MD — A New Variable Displacement Engine". SAE Transactions. 92, section 3: 362–370
Variable_displacement
Variable star in the constellation Orion
S Orionis is an asymptotic giant branch star in the constellation Orion, approximately 480 parsecs (1,600 ly) away. It varies regularly in brightness
S_Orionis
White dwarf star in the constellation Cancer
Chile and Germany. The system was initially identified as a cataclysmic variable on the basis of weak H-alpha emissions in the spectrum by the Sloan Digital
WD_J0914+1914
Star in the constellation Orion
HD 40657 is a single star in the equatorial constellation of Orion, near the constellation border with Monoceros. It has an orange hue and is faintly
HD_40657
1715 NGC 1788, reflection nebula in Orion NGC 1931 NGC 1973, NGC 1975 and NGC 1977 NGC 1999, reflection nebula in Orion NGC 2014 NGC 2023 NGC 2080, Ghost
List_of_diffuse_nebulae
Star in the constellation Orion
Tau Orionis (τ Ori, τ Orionis) is a binary star in the constellation Orion. If an imaginary line is drawn north-west between the stars Rigel and Mintaka
Tau_Orionis
Binary star system in the constellation Orion
37017 is a binary star system in the equatorial constellation of Orion. It has the variable star designation V1046 Orionis; HD 37017 is the identifier from
HD_37017
Index of articles associated with the same name
B1V variable star θ2 Orionis C (HD 37062), a binary star system The various components are spread over several arc-minutes in and near the Orion Nebula
Theta_Orionis
Copper iron sulfide mineral
than having to process whole ore. Additionally, it can be used as an alternative method to pyrometallurgy for variable ore. Other advantages hydrometallurgical
Chalcopyrite
Class of eclipsing binary stars
Algol variables or Algol-type binaries are a class of eclipsing binary stars that are similar to the prototype member of this class, β Persei (Beta Persei
Algol_variable
Star in the constellation Orion
DN Orionis is an Algol variable located in the constellation of Orion. The primary star is a spectral type A0 star and the secondary is an evolved giant
DN_Orionis
Binary star system in the constellation Orion
(ο1 Ori) is a binary star in the northeastern corner of the constellation Orion. It is visible to the naked eye with an apparent visual magnitude of 4.7
Omicron1_Orionis
ORION VARIABLE
ORION VARIABLE
Boy/Male
Teutonic English
Rich.
Boy/Male
Hindu
Son of fire
Boy/Male
Egyptian
Born of twins.
Surname or Lastname
Welsh
Welsh : variant of Eynon.English : metonymic occupational name for an onion grower or seller, from Old French oignon ‘onion’.
Boy/Male
Greek English
Place name in Greece.
Male
English
Anglicized form of Middle Welsh Urien, ORIAN means "privileged birth."
Boy/Male
Greek American
Rising in the sky; dawning. Mythological Orion was a mighty hunter and son of Poseidon. The...
Male
Irish
Variant spelling of Irish Brian, BRION means "high hill."
Boy/Male
American, Christian, French, Greek, Gujarati, Hindu, Indian, Japanese, Kannada, Malayalam, Marathi, Telugu
Son of Fire; Light of Heaven
Boy/Male
Greek Hebrew Latin
A Greek poet and musician. The mythological magic talking horse born to Poseidon and Demeter.
Boy/Male
Celtic
Brave; Virtuous.
Surname or Lastname
English and Scottish
English and Scottish : habitational name from any of various places called Orton. All those in England share a second element from Old English tÅ«n ‘enclosure’, ‘settlement’, but the first element in each case is more difficult to determine. Examples in Cambridgeshire and Warwickshire are on the banks of rivers, so that there it is probably Old English Åfer ‘riverbank’; in other cases it is impossible to decide between ofer ‘ridge’ and ufera ‘upper’. Orton in Cumbria is probably formed with the Old Norse byname Orri ‘black-cock’ (the male black grouse). Orton near Fochabers, Scotland, is of uncertain etymology.
Boy/Male
American, British, English, Greek
Of the Sea; Descendant of Dorus
Male
Greek
(ΩÏίων) Greek name, probably ORION means "mountain man." But some sources say that the name may actually be of Akkadian origin; if so, it means "light of heaven." In mythology, this is the name of one of the Titan gods, a primordial hunter who was killed by a scorpion. A constellation was named after him. Orion had two dogs; their names were: Arktophonos and Ptoophagos.Â
Boy/Male
English American French Latin
Ormond's son.
Male
Hebrew
Variant spelling of Hebrew Uryon, URION means "flame" or "light."
Girl/Female
Latin
Wife of Orion.
Girl/Female
Latin
Mother of Orion.
Boy/Male
Basque
Happy.
Boy/Male
Scottish Irish
From the craggy hills.' Tor is a name for a craggy hilltop and also may refer to a watchtower.
ORION VARIABLE
ORION VARIABLE
Surname or Lastname
English
English : variant of Humphries.
Female
Welsh
 Welsh form of Greek Eva, EFA means "life." Compare with another form of Efa.
Boy/Male
Sikh
Without price, Priceless, Invaluable
Girl/Female
Tamil
Like Paris, Fairy or like a fairy
Boy/Male
Hindu
Giver of wealth & treasures, Kuber
Boy/Male
Muslim
Medicine
Boy/Male
English
Lives in the forest.
Girl/Female
Hindu
Girl/Female
Tamil
Orpita | ஓரà¯à®ªà®¿à®¤à®¾
Offering
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Great Man; Firm in Battle
ORION VARIABLE
ORION VARIABLE
ORION VARIABLE
ORION VARIABLE
ORION VARIABLE
n.
See Oriel.
n.
A genus of plants, including the onion, garlic, leek, chive, etc.
n.
Any onion which does not "bottom out," but remains with a thick stem like a leek.
n.
A small constellation situated south of and under the foot of Orion; Lepus.
n.
A liliaceous plant of the genus Allium (A. cepa), having a strong-flavored bulb and long hollow leaves; also, its bulbous root, much used as an article of food. The name is often extended to other species of the genus.
n.
A dark variety of smoky quartz.
n.
Onion.
n.
A fixed star of the first magnitude in the left foot of the constellation Orion.
n.
A defensive covering for the head. See Casque, Headpiece, Morion, Sallet, and Illust. of Beaver.
n.
A large and bright constellation on the equator, between the stars Aldebaran and Sirius. It contains a remarkable nebula visible to the naked eye.
n.
A morion. See Morion.
n.
See Orison.
n.
A kind of open helmet, without visor or beaver, and somewhat resembling a hat.
n.
A kind of small onion (Allium Ascalonicum), native of Palestine; the eschalot, or shallot.
n.
A bright star of the first magnitude, near one shoulder of Orion.
n.
A perennial alliaceous plant (Allium fistulosum), sometimes called Welsh onion. Its fistular leaves areused in cookery.
n.
The Unicorn, a constellation situated to the east Orion.
n.
A prayer; a supplication.
n.
A scallion; a leek or small onion.