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...

of Variable Stars, both Mira variables and semiregular variables, particularly those of type SRa, were often considered as long period variables. At...

This is a list of semiregular variable stars. Variability ranges are taken from the General Catalogue of Variable Stars (GCVS) where these are visual...

second brightest in its constellation. It is a distinctly reddish, semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, with...

is the brightest star in the constellation, and the semiregular variable star Y Lyncis is a target for amateur astronomers. Six star systems have been...

V-band, and distances are from the Gaia DR2 star catalogue. Long period variable Semiregular variable star Mattei, Janet Akyuz (1997). "1997JAVSO..25....

(Pi1 Gruis) is a semiregular variable star in the constellation Grus around 530 light-years from Earth. It forms a close double star with π2 Gru four...

known as its Flamsteed designation 13 Lyrae, is a 4th magnitude semiregular variable star in the constellation Lyra, approximately 350 light years away...

Variable Stars Star portal Lists of astronomical objects Lists of stars List of semiregular variable stars List of stars that have unusual dimming periods...

they are reclassified into other categories such as semiregular variables. Irregular variable stars were first given acronyms based on the letter "I":...

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)...

defined by ISO 217 Satanic ritual abuse SRa or SRA, a type of semiregular variable star Senior Airman (SrA), a US Air Force rank Septic Reserve Area,...

IBM operating systems Solid rocket booster SRb, a subtype of semiregular variable star Swedish Red-and-White or Svensk Röd och Vit Boskap, a breed of...

giant star, BM Scorpii, which contrasts sharply with its blue neighbours in photographs. BM Scorpii, is classed as a semiregular variable star, its brightness...

Cephei is also known as Herschel's Garnet Star due to its deep red colour. It is a semiregular variable star with a minimum magnitude of 5.1 and a maximum...

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...

supergiant star located in the constellation of Perseus. It is within the Double Cluster, 7,250+470 −420 light-years away. It is a semiregular variable star. Ranging...

open 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...

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes systematically with time. This variation may be caused...

supergiant star in the constellation Taurus. It is a magnitude 4 star, visible to the naked eye under good observing conditions. A semiregular variable, its...

Superba) is a semiregular variable star that varies between magnitudes 5.0 and 6.5 over a period of around 158 days. It is a carbon star and is deep red...

is a dust-enshrouded bright red supergiant and is classified as a semiregular variable with an approximate pulsation period of 740 days. Based on an old...

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...

Cen (HD 127233, HIP 70969) is a semiregular variable star in the constellation of Centaurus. The variability in the star was discovered by Williamina Fleming...

AK Pyxidis is a semiregular variable star located in the constellation Pyxis. It varies between magnitudes 6.09 and 6.51, making it very faintly visible...

Mira variable star that ranges in magnitude from a minimum of 15.2 to a maximum of 7.2 with a period of 371.1 days. T Arietis is a semiregular variable star...

V602 Carinae (V602 Car, HD 97671) is a red supergiant and variable star of spectral type M3 in the constellation Carina. It is considered to be one of...

T Microscopii is a semiregular variable star in the constellation Microscopium. It ranges from magnitude 6.74 to 8.11 over a period of 352 days. Located...

red giant star with a stellar classification of M2III. It is a semiregular variable star of subtype SRb with a period of 30.592 days and a maximum brightness...

that the star's brightness varied. It was given its variable star designation, CK Carinae, in 1922. Classified as a semiregular variable star, CK Carinae's...