19 Cephei

19 Cephei is a multiple supergiant star in the constellation of Cepheus.

19 Cephei visual magnitude is 5.11. Because of its reltive faintness, 19 Cephei should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 19 Cephei:

Color of 19 Cephei ⬤

Magnitude of 19 Cephei 5.11

Class Supergiant

VISIBILITY RIGHT NOW 19 Cephei is above the horizon from Greenwich, United Kingdom [change]. Altitude: 67°.

Celestial coordinates and finder chart of 19 Cephei

19 Cephei is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 19 Cephei are provided in the following table:

Right Ascension J2000 22h 05m 08s

Declination J2000 +62° 16’ 48”

Galactic Longitude 104.87°

Galactic Latitude 5.39°

Constellation Cepheus

The simplified sky map below shows the position of 19 Cephei in the sky:

Simplified finder chart for 19 Cephei.

Visibility of 19 Cephei from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

19 Cephei is circumpolar and transits at 09:27 UTC (altitude: 79.2°)

Digitized Sky Survey image of 19 Cephei

The image below is a photograph of 19 Cephei from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 19 Cephei is 0.003 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 19 Cephei. The red arrow shows the motion of 19 Cephei during the next 100000 years (5.00 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of 19 Cephei from the Sun and relative movement

19 Cephei is distant 5,433.33 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 1,666.67 pc

Distance (light year) 5,433.33 ly

Heliocentric radial velocity -13 km/s

Proper Motion RA 0.003 arcsec/year

Spectral properties of 19 Cephei

19 Cephei belongs to spectral class O9 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -6.00

Spectral Type O9I

Color Index (B-V) 0.08

Temperature of 19 Cephei 9226K

The red dot in the diagram below shows where 19 Cephei is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 19 Cephei. Attribution: Richard Powell / CC BY-SA

19 Cephei star system properties

19 Cephei is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 19 Cephei double sysyem:

Main star magnitude 5.11

Secondary star magnitude 10.71

Magnitude difference 5.6

Separation 60.4 arcsec

Alternative designations of 19 Cephei

Flamsteed designation 19 Cephei

Henry Draper Catalogue HD209975

SAO Catalogue SAO19849

Hipparcos Catalogue HIP109017

Durchmusterung Catalogue BD+61 2246

Aitken Double Star Catalogue ADS15624

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Other stars in Cepheus