18 Andromedae

Altitude: 21.1° Azimuth: 32.6° Direction: North-North-East

18 Andromedae is a main-sequence star in the constellation of Andromeda.

18 Andromedae visual magnitude is 5.3. Because of its reltive faintness, 18 Andromedae 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 18 Andromedae:

Color of 18 Andromedae ⬤

Magnitude of 18 Andromedae 5.3

Class Main-sequence

VISIBILITY RIGHT NOW

18 Andromedae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 21.1°
Azimuth: 32.6°
Direction: North-North-East

Celestial coordinates and finder chart of 18 Andromedae

18 Andromedae is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 18 Andromedae are provided in the following table:

Right Ascension J2000 23h 39m 08s

Declination J2000 +50° 28’ 18”

Galactic Longitude 111.34°

Galactic Latitude -10.77°

Constellation Andromeda

The simplified sky map below shows the position of 18 Andromedae in the sky:

Simplified finder chart for 18 Andromedae.

Visibility of 18 Andromedae from your location

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

18 Andromedae is circumpolar and transits at 18:34 UTC (altitude: 89.0°)

Digitized Sky Survey image of 18 Andromedae

The image below is a photograph of 18 Andromedae 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 18 Andromedae is -0.017 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 18 Andromedae. The red arrow shows the motion of 18 Andromedae during the next 10000 years (-2.83 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of 18 Andromedae from the Sun and relative movement

18 Andromedae is distant 389.95 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 119.62 pc

Distance (light year) 389.95 ly

Heliocentric radial velocity 9 km/s

Proper Motion RA -0.017 arcsec/year

Proper Motion Dec -0.002 arcsec/year

Spectral properties of 18 Andromedae

18 Andromedae belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.09

Spectral Type B9V

Color Index (B-V) -0.06

Temperature of 18 Andromedae 10941K

The red dot in the diagram below shows where 18 Andromedae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 18 Andromedae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 18 Andromedae

Flamsteed designation 18 Andromedae

Henry Draper Catalogue HD222304

SAO Catalogue SAO35642

Hipparcos Catalogue HIP116709

Durchmusterung Catalogue BD+49 4180

FK5 Catalogue 3897

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Other stars in Andromeda