List of semiregular variable stars

Template:Short description This is a list of semiregular variable stars. Variability ranges are taken from the General Catalogue of Variable Stars (GCVS) where these are visual magnitudes, otherwise from the International Variable Star Index (VSX). Spectral types are taken from the GCVS, which may differ from more recent MK spectral types but often defines a range.

Star	Constellation	Discovery	Maximum (mV)	Minimum (mV)	Range	Period (days)	Spectral Type	Type	Comment
θ Aps	Apus		Template:Ntsh4m.65	Template:Ntsh6m.20	Template:Nts	Template:Nts	M7III	SRb
β And (Mirach)	Andromeda		Template:Ntsh2m.01	Template:Ntsh2m.10	Template:Nts	Template:Nts	M0IIIa	SRb	suspected
Z Aqr	Aquarius		Template:Ntsh7m.4	Template:Ntsh10m.2	Template:Nts	Template:Nts	M1e-M7III	SRa
V Aql	Aquila		Template:Ntsh6m.6	Template:Ntsh8m.4	Template:Nts	Template:Nts	C5,4-C6,4(N6)	SRb
W Boö	Boötes		Template:Ntsh4m.49	Template:Ntsh5m.40	Template:Nts	Template:Nts	M2-M4III	SRb:
VZ Cam	Camelopardalis		Template:Ntsh4m.80	Template:Ntsh4m.96	Template:Nts	Template:Nts	M4IIIa		Lb in GCVS
Y CVn (La Superba)	Canes Venatici		Template:Ntsh4m.8	Template:Ntsh6m.3	Template:Nts	Template:Nts	C5,4J(N3)	SRb	one of the reddest stars visible to the unaided eye
ρ Cas	Cassiopeia	L.D.Wells (1901)	Template:Ntsh4m.1	Template:Ntsh6m.2	Template:Nts	Template:Nts	F8pIa-K0pIa-0	SRd
WZ Cas	Cassiopeia		Template:Ntsh6m.3	Template:Ntsh8m.5	Template:Nts		C9,2JLi(N1p)	SRb	Visual double star, visible through binoculars
V806 Cen	Centaurus		Template:Ntsh4m.16	Template:Ntsh4m.26	Template:Nts	Template:Nts	M5III	SRb
T Cen	Centaurus		Template:Ntsh5m.5	Template:Ntsh9m.0	Template:Nts	Template:Nts	K0:e-M4II:e	SRa	classified as RV Tauri variable by some
V810 Cen	Centaurus		Template:Ntsh4m.95	Template:Ntsh5m.12	Template:Nts	Template:Nts	F5-G0Ia-0	SRd	B1 Iab companion
μ Cep (Herschel's Garnet Star)	Cepheus	William Herschel (1782)	Template:Ntsh3m.43	Template:Ntsh5m.10	Template:Nts	Template:Nts	M2eIa	SRc
SS Cep	Cepheus		Template:Ntsh6m.5	Template:Ntsh7m.7	Template:Nts	Template:Nts	M5III	SRb
AR Cep	Cepheus		Template:Ntsh7m.0	Template:Ntsh7m.9	Template:Nts	Template:Ntsh~364	M4III	SRb
T Cet	Cetus		Template:Ntsh4m.96	Template:Ntsh6m.90	Template:Nts	Template:Nts	M5-6SIIe	SRc
T Cnc	Cancer	Hind (1850)	Template:Ntsh7m.6	Template:Ntsh10m.5	Template:Nts	Template:Nts	C3,8-C5,5(R6-N6)	SRb
X Cnc	Cancer		Template:Ntsh5m.69	Template:Ntsh6m.94	Template:Nts	Template:Nts	C5,4(N3)	SRb
RR CrB	Corona Borealis		Template:Ntsh7m.3	Template:Ntsh8m.2	Template:Nts	Template:Nts	M3-M6	SRb
W Cyg	Cygnus		Template:Ntsh5m.10	Template:Ntsh6m.83	Template:Nts	Template:Nts	M4e-M6e(Tc:)III	SRb
AF Cyg	Cygnus		Template:Ntsh6m.4	Template:Ntsh7m.7	Template:Nts	Template:Nts	M5e-M7	SRb
U Del	Delphinus		Template:Ntsh6m.14	Template:Ntsh7m.61	Template:Nts	Template:Nts	M5II-III	SRb
EU Del	Delphinus		Template:Ntsh5m.79	Template:Ntsh6m.9	Template:Nts	Template:Nts	M6.4III	SRb
η Gem (Propus)	Gemini	Schmidt (1865)	Template:Ntsh3m.15	Template:Ntsh3m.90	Template:Nts	Template:Nts	M3IIIab	SRa	also Algol eclipsing binary?
α Her (Rasalgethi)	Hercules	William Herschel (1759)	Template:Ntsh2m.74	Template:Ntsh4m.00	Template:Nts		M5Ib-II	SRc
30 Her	Hercules		Template:Ntsh4m.3	Template:Ntsh6m.3	Template:Nts	Template:Nts	M6III	SRb
X Her	Hercules		Template:Ntsh5m.8	Template:Ntsh7m.0	Template:Nts	Template:Nts	M6e	SRb
U Hya	Hydra		Template:Ntsh4m.56	Template:Ntsh5m.40	Template:Nts	Template:Ntsh~450	C6.5,3(N2)(Tc)	SRb
RX Lep	Lepus		Template:Ntsh5m.0	Template:Ntsh7m.4	Template:Nts	Template:Ntsh~60	M6.2III	SRb
σ Lib (Brachium)	Libra		Template:Ntsh3m.20	Template:Ntsh3m.46	Template:Nts	Template:Nts	M5III	SRb
R Lyr	Lyra		Template:Ntsh3m.88	Template:Ntsh5m.00	Template:Nts	Template:Ntsh~46	M5III	SRb
α Ori (Betelgeuse)	Orion	John Herschel (1840)	Template:Ntsh0m.0	Template:Ntsh1m.3	Template:Nts	Template:Nts	M1-M2Ia-Ibe	SRc
W Ori	Orion		Template:Ntsh5m.5	Template:Ntsh6m.9	Template:Nts	Template:Nts	C5,4(N5)	SRb
CK Ori	Orion		Template:Ntsh5m.9	Template:Ntsh7m.1	Template:Nts	Template:Ntsh~120	K2IIIe:		probably not variable
S Pav	Pavo		Template:Ntsh6m.6	Template:Ntsh10m.4	Template:Nts	Template:Nts	M7IIe-M8III	SRa
GZ Peg	Pegasus		Template:Ntsh4m.95	Template:Ntsh5m.23	Template:Nts	Template:Nts	M4SIII	SRa
ρ Per	Perseus		Template:Ntsh3m.30	Template:Ntsh4m.00	Template:Nts	Template:Ntsh~50	M4IIb-IIIa	SRb
R Pic	Pictor		Template:Ntsh6m.35	Template:Ntsh10m.10	Template:Nts	Template:Nts	M1IIe-M4IIe
L2 Puppis	Puppis		Template:Ntsh2m.6	Template:Ntsh6m.2	Template:Nts	Template:Nts	M5IIIe-M6IIIe	SRb
VX Sgr	Sagittarius		Template:Ntsh6m.52	Template:Ntsh14m.00	Template:Nts	Template:Nts	M4eIa-M10eIa	SRc	one of the largest stars known
η Scl	Sculptor	Cousins/Stoy (1962)	Template:Ntsh4m.8	Template:Ntsh4m.9	Template:Nts		M4IIIa	SRb
τ4 Ser	Serpens		Template:Ntsh5m.89	Template:Ntsh7m.07	Template:Nts	Template:Nts	M5IIb-IIIa	SRb
CE Tau	Taurus		Template:Ntsh4m.23	Template:Ntsh4m.54	Template:Nts	Template:Nts	M2Iab-Ib	SRc
SS Vir	Virgo		Template:Ntsh6m.0	Template:Ntsh9m.6	Template:Nts	Template:Nts	C6,3e(Ne)	SRa
SV UMa	Ursa Major		Template:Ntsh9m.1	Template:Ntsh10m.6	Template:Nts	Template:Nts	G1Ibe-K3Iap	SRd
Z UMa	Ursa Major		Template:Ntsh6m.2	Template:Ntsh9m.4	Template:Nts	Template:Nts	M5IIIe	SRb
RR UMi	Ursa Minor		Template:Ntsh4m.44	Template:Ntsh4m.85	Template:Nts	Template:Nts	M5III	SRb

See also

• Lists of astronomical objects
• Lists of stars
• List of stars that have unusual dimming periods
• Variable star designation