HR122

HR122 is a double giant star in the constellation of Andromeda.

HR122 visual magnitude is 5.87. Because of its reltive faintness, HR122 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 HR122:

Color of HR122 ⬤

Magnitude of HR122 5.87

Class Giant

VISIBILITY RIGHT NOW HR122 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 14°.

Celestial coordinates and finder chart of HR122

HR122 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 HR122 are provided in the following table:

Right Ascension J2000 00h 31m 25s

Declination J2000 +33° 34’ 54”

Galactic Longitude 118.16°

Galactic Latitude -29.1°

Constellation Andromeda

The simplified sky map below shows the position of HR122 in the sky:

Simplified finder chart for HR122.

Visibility of HR122 from your location

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

Today's HR122 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 56.4° RISE 3:14

Max altitude: 72.1° TRANSIT 12:57

Azimuth: 303.6° SET 22:39

RIGHT NOW HR122 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR122

The image below is a photograph of HR122 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 HR122 is 0.047 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR122. The red arrow shows the motion of HR122 during the next 10000 years (7.83 arcmin in Right Ascension and -3.17 arcmin in declination);

Distance of HR122 from the Sun and relative movement

HR122 is distant 467.05 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 143.27 pc

Distance (light year) 467.05 ly

Heliocentric radial velocity 9 km/s

Proper Motion RA 0.047 arcsec/year

Proper Motion Dec -0.019 arcsec/year

Spectral properties of HR122

HR122 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.09

Spectral Type K1III

Color Index (B-V) 1.14

Temperature of HR122 4430K

The red dot in the diagram below shows where HR122 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR122. Attribution: Richard Powell / CC BY-SA

HR122 star system properties

HR122 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR122 double sysyem:

Main star magnitude 5.87

Secondary star magnitude 8.27

Magnitude difference 2.4

Separation 56.4 arcsec

Alternative designations of HR122

Henry Draper Catalogue HD2767

SAO Catalogue SAO53956

Hipparcos Catalogue HIP2475

Durchmusterung Catalogue BD+32 80

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Other stars in Andromeda