9 Sagittarii
E479070
9 Sagittarii is a massive, luminous O-type star system in the constellation Sagittarius that plays a key role in energizing and illuminating the surrounding interstellar gas.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
O-type star
ⓘ
massive star ⓘ spectroscopic binary ⓘ stellar system ⓘ |
| age | a few million years ⓘ |
| apparentMagnitudeV | 5.97 ⓘ |
| belongsToClusterOrAssociation | NGC 6530 region NERFINISHED ⓘ |
| binaryStatus | double-lined spectroscopic binary ⓘ |
| catalogDesignation |
CD−24 13810
NERFINISHED
ⓘ
HD 164794 NERFINISHED ⓘ HIP 88333 NERFINISHED ⓘ HR 6727 NERFINISHED ⓘ SAO 186149 NERFINISHED ⓘ |
| colorIndexBminusV | +0.19 ⓘ |
| componentCount | 2 ⓘ |
| constellation | Sagittarius NERFINISHED ⓘ |
| declination | −24°21′38″ ⓘ |
| distance |
approximately 1,500 parsecs
ⓘ
approximately 5,000 light-years ⓘ |
| drivesIonization | Lagoon Nebula H II region NERFINISHED ⓘ |
| drivesStellarWindBubble | yes ⓘ |
| effectiveTemperature | about 40,000 K ⓘ |
| energizes | surrounding interstellar gas ⓘ |
| equatorialCoordinateSystem | ICRS NERFINISHED ⓘ |
| evolutionaryStatus | main-sequence ⓘ |
| galacticEnvironment | Lagoon Nebula NERFINISHED ⓘ |
| galacticLatitude | −1.2 degrees ⓘ |
| galacticLongitude | 6.0 degrees ⓘ |
| hasStellarWind | yes ⓘ |
| ionizingPhotonSourceFor | M8 (Lagoon Nebula) NERFINISHED ⓘ |
| locatedIn |
Milky Way
ⓘ
Sagittarius OB1 association NERFINISHED ⓘ |
| luminosity | several hundred thousand times solar luminosity ⓘ |
| mass | greater than 40 solar masses ⓘ |
| notableFor |
high-mass O-type binary in Lagoon Nebula
ⓘ
strong ionizing radiation field ⓘ |
| orbitalPeriod | approximately 9.1 days ⓘ |
| parallax | 0.66 mas ⓘ |
| primaryComponentType | O-type main-sequence star ⓘ |
| properMotionDec | −2.27 mas/yr ⓘ |
| properMotionRA | −0.88 mas/yr ⓘ |
| radialVelocity | +11 km/s ⓘ |
| rightAscension | 18h03m52s ⓘ |
| secondaryComponentType | O-type main-sequence star ⓘ |
| spectralType | O4 V((f)) ⓘ |
| variableType | eclipsing binary candidate ⓘ |
| visibleToNakedEye | yes ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.