List of semiregular variable stars

Short description: none

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.

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 (mV)  | Minimum (mV)  | Range  | Period (days)  | Spectral Type  | Type | Comment

|
|
|
|
|
|
|
|
|

θ Aps | Apus |  | 4m.65  | 6m.20  | 1.55 | 119 | M7III  | SRb  |
β And (Mirach)  | Andromeda |  | 2m.01  | 2m.10  | 0.09 | 119 | M0IIIa  | SRb  | suspected
Z Aqr  | Aquarius |  | 7m.4  | 10m.2  | 2.8 | 136.6 | M1e-M7III  | SRa  |
V Aql | Aquila |  | 6m.6  | 8m.4  | 1.8 | 353 | C5,4-C6,4(N6)  | SRb  |
W Boö  | Boötes |  | 4m.49  | 5m.40  | 0.67 | 450 | M2-M4III  | SRb:  |
VZ Cam | Camelopardalis |  | 4m.80  | 4m.96  | 0.16 | 23.7 | M4IIIa  |  | Lb in GCVS
Y CVn (La Superba)  | Canes Venatici |  | 4m.8  | 6m.3  | 1.5 | 160 | C5,4J(N3)  | SRb  | one of the reddest stars visible to the unaided eye
ρ Cas | Cassiopeia | L.D.Wells (1901)  | 4m.1  | 6m.2  | 2.1 | 320 | F8pIa-K0pIa-0  | SRd  |
WZ Cas | Cassiopeia |  | 6m.3  | 8m.5  | 2.2 |  | C9,2JLi(N1p)  | SRb  | Visual double star, visible through binoculars
V806 Cen | Centaurus |  | 4m.16  | 4m.26  | 0.1 | 12 | M5III  | SRb  |
T Cen | Centaurus |  | 5m.5  | 9m.0  | 3.5 | 90.44 | K0:e-M4II:e  | SRa  | classified as RV Tauri variable by some
V810 Cen | Centaurus |  | 4m.95  | 5m.12  | 0.17 | 130 | F5-G0Ia-0  | SRd  | B1 Iab companion
μ Cep (Herschel's Garnet Star)  | Cepheus | William Herschel (1782)  | 3m.43  | 5m.10  | 1.67 | 730 | M2eIa  | SRc  |
SS Cep | Cepheus |  | 6m.5  | 7m.7  | 1.2 | 90 | M5III  | SRb  |
AR Cep | Cepheus |  | 7m.0  | 7m.9  | 0.9 | ~364  | M4III  | SRb  |
T Cet | Cetus  |  | 4m.96  | 6m.90  | 1.94 | 159 | M5-6SIIe  | SRc  |
T Cnc  | Cancer | Hind (1850)  | 7m.6  | 10m.5  | 2.9 | 482 | C3,8-C5,5(R6-N6)  | SRb  |
X Cnc | Cancer |  | 5m.69  | 6m.94  | 1.25 | 180 | C5,4(N3)  | SRb  |
RR CrB | Corona Borealis |  | 7m.3  | 8m.2  | 0.9 | 60.8 | M3-M6  | SRb  |
W Cyg | Cygnus |  | 5m.10  | 6m.83  | 1.73 | 131 | M4e-M6e(Tc:)III  | SRb  |
AF Cyg  | Cygnus |  | 6m.4  | 7m.7  | 1.3 | 92.5 | M5e-M7  | SRb  |
U Del  | Delphinus |  | 6m.14  | 7m.61  | 1.47 | 110 | M5II-III  | SRb  |
EU Del  | Delphinus |  | 5m.79  | 6m.9  | 1.11 | 59.7 | M6.4III  | SRb  |
η Gem (Propus)  | Gemini | Schmidt (1865)  | 3m.15  | 3m.90  | 0.75 | 233 | M3IIIab  | SRa  | also Algol eclipsing binary?
α Her (Rasalgethi)  | Hercules | William Herschel (1759)  | 2m.74  | 4m.00  | 1.26 |  | M5Ib-II  | SRc  |
30 Her | Hercules |  | 4m.3  | 6m.3  | 2.0 | 89.2 | M6III  | SRb  |
X Her | Hercules |  | 5m.8  | 7m.0  | 1.1 | 95.0 | M6e  | SRb  |
U Hya | Hydra |  | 4m.56  | 5m.40  | 2.4 | ~450  | C6.5,3(N2)(Tc)  | SRb  |
RX Lep | Lepus |  | 5m.0  | 7m.4  | 2.4 | ~60  | M6.2III  | SRb  |
σ Lib (Brachium)  | Libra |  | 3m.20  | 3m.46  | 0.26 | 20 | M5III  | SRb  |
R Lyr | Lyra |  | 3m.88  | 5m.00  | 1.12 | ~46  | M5III  | SRb  |
α Ori (Betelgeuse)  | Orion | John Herschel (1840)  | 0m.0  | 1m.3  | 1.3 | 2,335 | M1-M2Ia-Ibe  | SRc  |
W Ori | Orion |  | 5m.5  | 6m.9  | 4.2 | 212 | C5,4(N5)  | SRb  |
CK Ori  | Orion |  | 5m.9  | 7m.1  | 1.2 | ~120  | K2IIIe:  |  | probably not variable
S Pav  | Pavo |  | 6m.6  | 10m.4  | 3.8 | 381 | M7IIe-M8III  | SRa  |
GZ Peg  | Pegasus |  | 4m.95  | 5m.23  | 0.28 | 92.66 | M4SIII  | SRa  |
ρ Per | Perseus |  | 3m.30  | 4m.00  | 0.70 | ~50  | M4IIb-IIIa  | SRb  |
R Pic | Pictor |  | 6m.35  | 10m.10  | 3.75 | 171 | M1IIe-M4IIe  |  |
L2 Puppis | Puppis |  | 2m.6  | 6m.2  | 3.6 | 141 | M5IIIe-M6IIIe  | SRb  |
VX Sgr | Sagittarius |  | 6m.52  | 14m.00  | 7.08 | 732 | M4eIa-M10eIa  | SRc  | one of the largest stars known
η Scl | Sculptor | Cousins/Stoy (1962)  | 4m.8  | 4m.9  | 0.1 |  | M4IIIa  | SRb  |
τ4 Ser | Serpens |  | 5m.89  | 7m.07  | 1.18 | 100 | M5IIb-IIIa  | SRb  |
CE Tau  | Taurus |  | 4m.23  | 4m.54  | 0.31 | 165 | M2Iab-Ib  | SRc  |
SS Vir | Virgo |  | 6m.0  | 9m.6  | 3.6 | 364.14 | C6,3e(Ne)  | SRa  |
SV UMa  | Ursa Major |  | 9m.1  | 10m.6  | 3.2 | 76 | G1Ibe-K3Iap  | SRd  |
Z UMa  | Ursa Major |  | 6m.2  | 9m.4  | 3.2 | 196 | M5IIIe  | SRb  |
RR UMi | Ursa Minor |  | 4m.44  | 4m.85  | 0.41 | 43.3 | M5III  | SRb  |

## See also

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

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/List of semiregular variable stars. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:List_of_semiregular_variable_stars&oldid=4387764"