HR556

HR556 is a multiple giant star in the constellation of Andromeda.

HR556 visual magnitude is 5.89. Because of its reltive faintness, HR556 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 HR556:

Color of HR556 ⬤

Magnitude of HR556 5.89

Class Giant

VISIBILITY RIGHT NOW HR556 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 4°.

Celestial coordinates and finder chart of HR556

HR556 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 HR556 are provided in the following table:

Right Ascension J2000 01h 55m 54s

Declination J2000 +37° 16’ 40”

Galactic Longitude 136.91°

Galactic Latitude -23.84°

Constellation Andromeda

The simplified sky map below shows the position of HR556 in the sky:

Simplified finder chart for HR556.

Visibility of HR556 from your location

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

Today's HR556 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.7° RISE 3:04

Max altitude: 75.8° TRANSIT 13:52

Azimuth: 307.3° SET 0:45

RIGHT NOW HR556 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR556

The image below is a photograph of HR556 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 HR556 is 0.004 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR556. The red arrow shows the motion of HR556 during the next 100000 years (6.67 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR556 from the Sun and relative movement

HR556 is distant 990.88 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

Distance (parsec) 303.95 pc

Distance (light year) 990.88 ly

Heliocentric radial velocity 7 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec -0.003 arcsec/year

Spectral properties of HR556

HR556 belongs to spectral class M0

Absolute magnitude -1.52

Spectral Type M0

Color Index (B-V) 1.63

Temperature of HR556 3608K

The red dot in the diagram below shows where HR556 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR556. Attribution: Richard Powell / CC BY-SA

HR556 star system properties

HR556 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR556 double sysyem:

Main star magnitude 5.89

Secondary star magnitude 6.09

Magnitude difference 0.2

Separation 190.4 arcsec

Alternative designations of HR556

Henry Draper Catalogue HD11727

SAO Catalogue SAO55102

Hipparcos Catalogue HIP9001

Durchmusterung Catalogue BD+36 354

Aitken Double Star Catalogue ADS1534

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