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...

(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...

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

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...

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

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

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...

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

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...

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...

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,...

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)...

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...

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...

Coronae Borealis (RR CrB, HD 140297, HIP 76844) is a M3-type semiregular variable star located in the constellation Corona Borealis with a parallax of...

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...

to a peak of +4.6 and now around +5.3 and is classified as a semiregular variable star of type SRd. It is undergoing strong mass loss as part of its...

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...

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...

Johann Schmidt discovered that Rho Persei is a variable star, in 1854. Rho Persei is a semiregular variable star, whose apparent magnitude varies between 3...

RS Coronae Borealis is a semiregular variable star located in the constellation Corona Borealis with a parallax of 2.93mas being a distance of 341 parsecs...

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...

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...

3639 and HD 78712, is a star about 490 light years from the Earth in the constellation Cancer. It is a semiregular variable star, ranging in brightness...

R Crateris is a star about 700 light years from the Earth in the constellation Crater. It is a semiregular variable star, ranging in brightness from magnitude...

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...

UZ Pyxidis (HD 75021) is a semiregular variable star in the constellation Pyxis. It is located about 3,600 light-years (1,100 parsecs) away from the Earth...

a semiregular variable star in the constellation Cepheus. It is of spectral type M5III, and has an estimated temperature of about 3,700 K. The star is...