RS Canum Venaticorum is a binary star system in the northern constellation of Canes Venatici. It serves as the prototype to the class of RS Canum Venaticorum...

An RS Canum Venaticorum variable is a type of variable star. The variable type consists of close binary stars having active chromospheres which can cause...

vary by less than 0.5 magnitudes (70% change in luminosity). Alpha2 Canum Venaticorum (α2 CVn) variables are main-sequence stars of spectral class B8–A7...

be capable of flaring.[citation needed] The more massive RS Canum Venaticorum variables (RS CVn) are also known to flare, but it is understood that these...

Vega, which are also variable. The system has been classified as an RS Canum Venaticorum variable, a class of binary stars with active chromospheres that...

along the constellation border with Andromeda. It is classified as a RS Canum Venaticorum variable and ranges in brightness from magnitude 8.1 down to 8.7...

HR 5110, also known as BH Canum Venaticorum, is a binary star system in the northern constellation of Canes Venatici. It is visible to the naked eye with...

Sun. RS Canum Venaticorum is the prototype of a special class of binary stars of chromospherically active and optically variable components. R Canum Venaticorum...

Gliese 268 (QY Aurigae) is a RS Canum Venaticorum variable (RS CVn) star in the Auriga constellation. RS CVn variables are binary star systems with a...

in 2009. Only slightly farther away is V478 Lyrae, an eclipsing RS Canum Venaticorum variable whose primary star shows active starspot activity. One of...

K7 V U−B color index +0.02/1.03 B−V color index +0.58/1.39 Variable type RS CVn? Astrometry A Radial velocity (Rv) +10.0 ± 0.1 km/s Proper motion (μ)...

It appears to have an active chromosphere and is classified as an RS Canum Venaticorum variable with a variable star designation of BU Cet. The star was...

magnitude 4.22. A yellow giant of spectral type G5III, the primary is a RS Canum Venaticorum variable star. It is a spectroscopic binary, with a companion 0.36 AU...

Star B: LHS 438 -- High proper-motion Star C: V* V2215 Oph -- Variable of RS CVn type Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early...

4 and a distance of 130 light-years. It is a very active RS Canum Venaticorum variable (RS CVn), a close binary system with active starspots. The primary...

Xiao-Min; Xiang, Fu-Yuan; Lu, Ye (2012), "Orbital Period Investigation of the RS CVN-Type Binary CG Cygni", Publications of the Astronomical Society of Japan...

is thought to be its rotation period and it is classified as an RS Canum Venaticorum variable, a dwarf star with an uneven surface brightness that changes...

but the secondary has been detected using interferometry. It is an RS Canum Venaticorum variable system with eclipses. The total amplitude of variation is...

an orbit once every 71.69 days. The system is also known to be an RS Canum Venaticorum variable, due to its binarity. For that reason, it has been given...

star. It is listed in the General Catalog of Variable Stars as an RS Canum Venaticorum variable, varying between visual magnitude 4.38 and 4.41. Stępień...

Donald Penrod, "Doppler Imaging of spotted stars - Application to the RS Canum Venaticorum star HR 1099" in Astronomical Society of the Pacific, Symposium on...

Berdyugina, S. V.; Ilyin, I.; Tuominen, I. (1999). "The long-period RS Canum Venaticorum binary IM Pegasi. I. Orbital and stellar parameters". Astronomy and...

demonstrated that component A is a spectroscopic binary star system of the RS Canum Venaticorum variable class. Given its average magnitude of around 5.9, it is...

uncertainty in the classification.) AF Leporis is classified as a RS Canum Venaticorum variable star, which means it has an active surface with large star...

P.; Ramsey, L. W. (March 1984). "Hydrogen-alpha observations of RS Canum Venaticorum stars. III - the eclipsing systems AR Lacertae and SZ PISCIUM". The...

around each other every 3.2 days. The system is classified as a RS Canum Venaticorum variable, a binary system with prominent starspot activity, and lies...

3.966 days. It is a detached Algol-type eclipsing binary of the RS Canum Venaticorum class with a subgiant component. (This means the pair have a close...

of Tucana. It has an apparent visual magnitude of 8.5, and is a RS Canum Venaticorum variable. The system is notable for being young as a member of the...

physical separation about 4,000 AU. ξ Ursae Majoris is classified as an RS Canum Venaticorum variable and its brightness varies by 0.01 magnitude. Component B...

American Association of Variable Star Observers mention that it is a RS Canum Venaticorum variable with a smaller range of 1.98 to 2.02. In 1959, the star...