9 Vulpeculae

Above the horizon. Rise: 21:06 | Tran: 4:55 | Set: 12:40

Alt: 47.24° Az: 236.20° Direction: South-West

9 Vulpeculae is a variable and multiple giant star of spectral class B8 in the constellation of Vulpecula.

9 Vulpeculae visual magnitude is 5. Because of its moderate brightness, 9 Vulpeculae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 9 Vulpeculae. The red arrow shows the motion of 9 Vulpeculae during the next 100000 years (13.33 arcmin in Right Ascension and 3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 35m 41s

Declination +19° 49’ 49”

Hour Angle 02h 27m 23s

Sidereal Time 22h 03m 05s

J2000

Right Ascension 19h 34m 34s

Declination +19° 46’ 23”

Galactic Coordinates

Galactic Longitude 55.35°

Galactic Latitude -0.14°

Finder Chart

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Finder chart for 9 Vulpeculae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5

Class Giant

Absolute magnitude -1.35

Spectral Type B8III

Color Index (B-V) -0.09

Temperature 11407K

The red dot in the diagram below shows where 9 Vulpeculae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 9 Vulpeculae. Attribution: Richard Powell / CC BY-SA

Star System Properties

9 Vulpeculae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 9 Vulpeculae double sysyem:

Main star magnitude 5

Secondary star magnitude 12.8

Magnitude difference 7.8

Separation 108.3 arcsec

Distance, Radial Speed, Proper Motion

9 Vulpeculae is distant 608.21 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

Distance (parsec) 186.57

Distance (light year) 608.21

Radial Speed 5 km/s

Proper Motion RA 0.008 arcsec/y

Proper Motion Dec 0.002"/y

Alternative Designations

Flamsteed designation 9 Vulpeculae

Henry Draper Catalogue HD184606

SAO Catalogue SAO104990

Hipparcos Catalogue HIP96275

Durchmusterung Catalogue BD+19 4063

General Catalogue of Variable Stars 12173

Aitken Double Star Catalogue ADS12622

Visibility from Your Location

Today's 9 Vulpeculae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.2° RISE 21:06

Max altitude: 58.4° TRANSIT 4:55

Azimuth: 289.8° SET 12:40

Set Location

Other stars in Vulpecula