S Monocerotis

E554485

S Monocerotis is a variable star system located in the constellation Monoceros, known for its brightness changes over time.

All labels observed (2)

Label Occurrences
S Monocerotis canonical 1
V640 Monocerotis 1

How this entity was disambiguated

Statements (39)

Predicate Object
instanceOf stellar system
variable star system
hasAlternativeName BD−02 1609
GCVS S Mon
HD 49331
HIP 32617
HR 2505
SAO 132020
hasAngularSeparationFromOrion near the border with Orion
hasApparentMagnitudeV approximately 4.0 to 4.7
hasBrightnessVariation changes brightness over time
hasColorIndexBMinusV approximately +1.6
hasDeclination −02° (approximate)
hasDiscoveryStatus known variable star
hasDistanceFromEarth approximately 1200 light-years
hasDistanceFromEarthParsec approximately 370 parsecs
hasEffectiveTemperature approximately 3500 K
hasEquatorialCoordinateSystem J2000
hasLuminosityClass giant
hasMinimumBrightness about magnitude 4.7
hasObservationMethod photometry
spectroscopy
hasParallax approximately 2.7 milliarcseconds
hasPeakBrightness about magnitude 4.0
hasPhotometricBand V band
hasRadialVelocity approximately +22 km/s
hasRightAscension 06h 53m (approximate)
hasSpectralType M-type giant
hasStellarClassification M-type semiregular variable
hasStellarPopulation late-type giant star
hasVariabilityPeriod approximately 270 days
approximately 570 days
hasVariableType semiregular variable star
isCataloguedIn Bright Star Catalogue
General Catalogue of Variable Stars
Henry Draper Catalogue
isInMilkyWayGalaxy true
isVisibleToNakedEye true
locatedInConstellation Monoceros

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Monoceros contains S Monocerotis
Plaskett’s Star hasAlternativeName V640 Monocerotis
linked to: S Monocerotis