55 Andromedae

55 Andromedae is a double giant star in the constellation of Andromeda.

55 Andromedae visual magnitude is 5.4. Because of its reltive faintness, 55 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 55 Andromedae:

Color of 55 Andromedae ⬤

Magnitude of 55 Andromedae 5.4

Class Giant

VISIBILITY RIGHT NOW 55 Andromedae is above the horizon from Greenwich, United Kingdom [change]. Altitude: 36°.

Celestial coordinates and finder chart of 55 Andromedae

55 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 55 Andromedae are provided in the following table:

Right Ascension J2000 01h 53m 17s

Declination J2000 +40° 43’ 46”

Galactic Longitude 135.4°

Galactic Latitude -20.64°

Constellation Andromeda

The simplified sky map below shows the position of 55 Andromedae in the sky:

Simplified finder chart for 55 Andromedae.

Visibility of 55 Andromedae from your location

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

55 Andromedae is circumpolar and transits at 13:26 UTC (altitude: 79.2°)

Digitized Sky Survey image of 55 Andromedae

The image below is a photograph of 55 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 55 Andromedae is -0.01 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 55 Andromedae. The red arrow shows the motion of 55 Andromedae during the next 10000 years (-1.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Distance of 55 Andromedae from the Sun and relative movement

55 Andromedae is distant 539.74 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 165.56 pc

Distance (light year) 539.74 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA -0.01 arcsec/year

Proper Motion Dec -0.006 arcsec/year

Spectral properties of 55 Andromedae

55 Andromedae belongs to spectral class K1

Absolute magnitude -0.69

Spectral Type K1

Color Index (B-V) 1.32

Temperature of 55 Andromedae 4086K

The red dot in the diagram below shows where 55 Andromedae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 55 Andromedae. Attribution: Richard Powell / CC BY-SA

55 Andromedae star system properties

55 Andromedae 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 55 Andromedae double sysyem:

Main star magnitude 5.4

Secondary star magnitude 10.7

Magnitude difference 5.3

Separation 59.8 arcsec

Alternative designations of 55 Andromedae

Flamsteed designation 55 Andromedae

Henry Draper Catalogue HD11428

SAO Catalogue SAO37587

Hipparcos Catalogue HIP8814

Durchmusterung Catalogue BD+40 394

FK5 Catalogue 2124

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Other stars in Andromeda