28 Andromedae

28 Andromedae is a variable and multiple giant star in the constellation of Andromeda.

28 Andromedae visual magnitude is 5.23. Because of its reltive faintness, 28 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 28 Andromedae:

Color of 28 Andromedae ⬤

Magnitude of 28 Andromedae 5.23

Class Giant

VISIBILITY RIGHT NOW 28 Andromedae is above the horizon from Greenwich, United Kingdom [change]. Altitude: 59°.

Celestial coordinates and finder chart of 28 Andromedae

28 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 28 Andromedae are provided in the following table:

Right Ascension J2000 00h 30m 07s

Declination J2000 +29° 45’ 06”

Galactic Longitude 117.42°

Galactic Latitude -32.89°

Constellation Andromeda

The simplified sky map below shows the position of 28 Andromedae in the sky:

Simplified finder chart for 28 Andromedae.

Visibility of 28 Andromedae from your location

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

Today's 28 Andromedae rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.2° RISE 3:55

Max altitude: 68.3° TRANSIT 12:55

Azimuth: 299.8° SET 21:56

RIGHT NOW 28 Andromedae is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 28 Andromedae

The image below is a photograph of 28 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 28 Andromedae is 0.041 arcsec per year in Right Ascension and -0.054 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 28 Andromedae. The red arrow shows the motion of 28 Andromedae during the next 10000 years (6.83 arcmin in Right Ascension and -9.00 arcmin in declination);

Distance of 28 Andromedae from the Sun and relative movement

28 Andromedae is distant 185.02 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 56.75 pc

Distance (light year) 185.02 ly

Heliocentric radial velocity -10 km/s

Proper Motion RA 0.041 arcsec/year

Proper Motion Dec -0.054 arcsec/year

Spectral properties of 28 Andromedae

28 Andromedae belongs to spectral class A7 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.46

Spectral Type A7III

Color Index (B-V) 0.24

Temperature of 28 Andromedae 7866K

The red dot in the diagram below shows where 28 Andromedae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 28 Andromedae. Attribution: Richard Powell / CC BY-SA

28 Andromedae star system properties

28 Andromedae 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 28 Andromedae double sysyem:

Main star magnitude 5.23

Secondary star magnitude 12.33

Magnitude difference 7.1

Separation 139.3 arcsec

Alternative designations of 28 Andromedae

Flamsteed designation 28 Andromedae

Henry Draper Catalogue HD2628

SAO Catalogue SAO74041

Hipparcos Catalogue HIP2355

Durchmusterung Catalogue BD+28 75

General Catalogue of Variable Stars GN And

Aitken Double Star Catalogue ADS409

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Other stars in Andromeda