List of semiregular variable stars

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 (VXS). Spectral types are taken from the GCVS, which may differ from more recent MK spectral types but often defines a range.

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

Star	Constellation	Discovery	Maximum (m_V)	Minimum (m_V)	Range	Period (days)	Spectral Type	Type	Comment
θ Aps	Apus		7000465000000000000♠4^m.65	7000620000000000000♠6^m.20	7000155000000000000♠1.55	7002119000000000000♠119	M7III	SRb
β And	Andromeda		7000200999999999999♠2^m.01	7000210000000000000♠2^m.10	6998900000000000000♠0.09	7002119000000000000♠119	M0IIIa	SRb	suspected
Z Aqr	Aquarius		7000740000000000000♠7^m.4	7001102009999900000♠10^m.2	7000280000000099999♠2.8	7002136600000000000♠136.6	M1e-M7III	SRa
V Aql	Aquila		7000660000000000000♠6^m.6	7000840000000000000♠8^m.4	7000180000000000000♠1.8	7002353000000000000♠353	C5,4-C6,4(N6)	SRb
W Boö	Boötes		7000449000000000000♠4^m.49	7000540000000000000♠5^m.40	6999670000000000000♠0.67	7002450000000000000♠450	M2-M4III	SRb:
VZ Cam	Camelopardalis		7000480000000000000♠4^m.80	7000496000000000000♠4^m.96	6999160000000000000♠0.16	7001237000000000000♠23.7	M4IIIa		Lb in GCVS
Y CVn La Superba	Canes Venatici		7000480000000000000♠4^m.8	7000630000000000000♠6^m.3	7000150000000000000♠1.5	7002160000000000000♠160	C5,4J(N3)	SRb	one of the reddest stars visible to the unaided eye
ρ Cas	Cassiopeia	L.D.Wells (1901)	7000410009999999999♠4^m.1	7000620000000000000♠6^m.2	7000210000000000000♠2.1	7002320000000000000♠320	F8pIa-K0pIa-0	SRd
WZ Cas	Cassiopeia		7000630000000000000♠6^m.3	7000850000000000000♠8^m.5	7000220000000000000♠2.2		C9,2JLi(N1p)	SRb	Visual double star, visible through binoculars
V806 Cen	Centaurus		7000416000000000000♠4^m.16	7000426000000000000♠4^m.26	6999100000000000000♠0.1	7001120000000000000♠12	M5III	SRb
T Cen	Centaurus		7000550000000000000♠5^m.5	7000900000000000000♠9^m.0	7000350000000000000♠3.5	7001904400000000000♠90.44	K0:e-M4II:e	SRa	classified as RV Tauri variable by some
V810 Cen	Centaurus		7000495000000000000♠4^m.95	7000512000000000000♠5^m.12	6999170000000000000♠0.17	7002130000000000000♠130	F5-G0Ia-0	SRd	B1 Iab companion
μ Cep	Cepheus	William Herschel (1782)	7000343000000000000♠3^m.43	7000510000000099999♠5^m.10	7000167000000000000♠1.67	7002730000000000000♠730	M2eIa	SRc
SS Cep	Cepheus		7000650000000000000♠6^m.5	7000770000000000000♠7^m.7	7000120000000000000♠1.2	7001900000000000000♠90	M5III	SRb
AR Cep	Cepheus		7000700000000000000♠7^m.0	7000790000000000000♠7^m.9	6999900000000000000♠0.9	7002364000000000000♠~364	M4III	SRb
T Cet	Cetus		7000496000000000000♠4^m.96	7000690000000000000♠6^m.90	7000194000000000000♠1.94	7002159000000000000♠159	M5-6SIIe	SRc
T Cnc	Cancer	Hind (1850)	7000760000000000000♠7^m.6	7001105000000000000♠10^m.5	7000290000000000000♠2.9	7002482000000000000♠482	C3,8-C5,5(R6-N6)	SRb
X Cnc	Cancer		7000569000000000000♠5^m.69	7000694000000000000♠6^m.94	7000125000000000000♠1.25	7002180000000000000♠180	C5,4(N3)	SRb
RR CrB	Corona Borealis		7000730000000000000♠7^m.3	7000820009999999999♠8^m.2	6999900000000000000♠0.9	7001608000000000000♠60.8	M3-M6	SRb
W Cyg	Cygnus		7000510000000099999♠5^m.10	7000683000000000000♠6^m.83	7000173000000000000♠1.73	7002131000000000000♠131	M4e-M6e(Tc:)III	SRb
AF Cyg	Cygnus		7000640000000000000♠6^m.4	7000770000000000000♠7^m.7	7000130000000000000♠1.3	7001925000000000000♠92.5	M5e-M7	SRb
U Del	Delphinus		7000614000000000000♠6^m.14	7000761000000000000♠7^m.61	7000147000000000000♠1.47	7002110000000000000♠110	M5II-III	SRb
EU Del	Delphinus		7000579000000000000♠5^m.79	7000690000000000000♠6^m.9	7000111000000000000♠1.11	7001597000000000000♠59.7	M6.4III	SRb
η Gem	Gemini	Schmidt (1865)	7000315000000000000♠3^m.15	7000390000000000000♠3^m.90	6999750000000000000♠0.75	7002233000000000000♠233	M3IIIab	SRa	also Algol eclipsing binary?
α Her Rasalgethi	Hercules	William Herschel (1759)	7000274000000000000♠2^m.74	7000400000000000000♠4^m.00	7000126000000000000♠1.26		M5Ib-II	SRc
30 Her	Hercules		7000430000000000000♠4^m.3	7000630000000000000♠6^m.3	7000200000000000000♠2.0	7001892000000000000♠89.2	M6III	SRb
X Her	Hercules		7000580000000000000♠5^m.8	7000700000000000000♠7^m.0	7000110000000000000♠1.1	7001950000000000000♠95.0	M6e	SRb
U Hya	Hydra		7000455990000099999♠4^m.56	7000540000000000000♠5^m.40	7000240000000000000♠2.4	7002450000000000000♠~450	C6.5,3(N2)(Tc)	SRb
RX Lep	Lepus		7000500000000000000♠5^m.0	7000740000000000000♠7^m.4	7000240000000000000♠2.4	7001600000000000000♠~60	M6.2III	SRb
σ Lib	Libra		7000320000000000000♠3^m.20	7000346000000000000♠3^m.46	6999260000000000000♠0.26	7001200000000000000♠20	M5III	SRb
R Lyr	Lyra		7000388000000000000♠3^m.88	7000500000000000000♠5^m.00	7000112000000000000♠1.12	7001460000000000000♠~46	M5III	SRb
α Ori Betelgeuse	Orion	John Herschel (1840)	5000000000000000000♠0^m.0	7000130000000000000♠1^m.3	7000130000000000000♠1.3	7003233500000000000♠2,335	M1-M2Ia-Ibe	SRc
W Ori	Orion		7000550000000000000♠5^m.5	7000690000000000000♠6^m.9	7000420000000000000♠4.2	7002212000000000000♠212	C5,4(N5)	SRb
CK Ori	Orion		7000590000000000000♠5^m.9	7000710000000000000♠7^m.1	7000120000000000000♠1.2	7002120000000000000♠~120	K2IIIe:		probably not variable
S Pav	Pavo		7000660000000000000♠6^m.6	7001104000000000000♠10^m.4	7000380000000000000♠3.8	7002381000000000000♠381	M7IIe-M8III	SRa
GZ Peg	Pegasus		7000495000000000000♠4^m.95	7000523000000000000♠5^m.23	6999280000000000000♠0.28	7001926600000000000♠92.66	M4SIII	SRa
ρ Per	Perseus		7000330000000000000♠3^m.30	7000400000000000000♠4^m.00	6999700000000000000♠0.70	7001500000000000000♠~50	M4IIb-IIIa	SRb
R Pic	Pictor		7000635000000000000♠6^m.35	7001101000000000000♠10^m.10	7000375000000000000♠3.75	7002171000000000000♠171	M1IIe-M4IIe
L² Puppis	Puppis		7000260000000000000♠2^m.6	7000620000000000000♠6^m.2	7000360000000000000♠3.6	7002141000000000000♠141	M5IIIe-M6IIIe	SRb
VX Sgr	Sagittarius		7000651990000000000♠6^m.52	7001140000000000000♠14^m.00	7000708000000000000♠7.08	7002732000000000000♠732	M4eIa-M10eIa	SRc	one of the largest stars known
η Scl	Sculptor	Cousins/Stoy (1962)	7000480000000000000♠4^m.8	7000490000000000000♠4^m.9	6999100000000000000♠0.1		M4IIIa	SRb
τ⁴ Ser	Serpens		7000589000000000000♠5^m.89	7000707000000000000♠7^m.07	7000118000000000000♠1.18	7002100000000000000♠100	M5IIb-IIIa	SRb
CE Tau	Taurus		7000423000000000000♠4^m.23	7000454000000000000♠4^m.54	6999310000000000000♠0.31	7002165000000000000♠165	M2Iab-Ib	SRc
SS Vir	Virgo		7000600000000000000♠6^m.0	7000960000000000000♠9^m.6	7000360000000000000♠3.6	7002364140000000000♠364.14	C6,3e(Ne)	SRa
SV UMa	Ursa Major		7000910000000000000♠9^m.1	7001106000000000000♠10^m.6	7000320000000000000♠3.2	7001760000000000000♠76	G1Ibe-K3Iap	SRd
Z UMa	Ursa Major		7000620000000000000♠6^m.2	7000940000000000000♠9^m.4	7000320000000000000♠3.2	7002196000000000000♠196	M5IIIe	SRb
RR UMi	Ursa Minor		7000444000000000000♠4^m.44	7000485000000099999♠4^m.85	6999410009999900000♠0.41	7001433000000000000♠43.3	M5III	SRb

References

This article is issued from Wikipedia - version of the 8/13/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.

List of semiregular variable stars

See also

References