HR687

HR687 is a multiple hypergiant star in the constellation of Andromeda.

HR687 visual magnitude is 5.82. Because of its reltive faintness, HR687 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 HR687:

Color of HR687 ⬤

Magnitude of HR687 5.82

Class Hypergiant

VISIBILITY RIGHT NOW HR687 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 11°.

Celestial coordinates and finder chart of HR687

HR687 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 HR687 are provided in the following table:

Right Ascension J2000 02h 22m 50s

Declination J2000 +41° 23’ 47”

Galactic Longitude 140.8°

Galactic Latitude -18.28°

Constellation Andromeda

The simplified sky map below shows the position of HR687 in the sky:

Simplified finder chart for HR687.

Visibility of HR687 from your location

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

HR687 is circumpolar and transits at 14:11 UTC (altitude: 79.9°)

Digitized Sky Survey image of HR687

The image below is a photograph of HR687 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 HR687 is -0.077 arcsec per year in Right Ascension and -0.096 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR687. The red arrow shows the motion of HR687 during the next 1000 years (-1.28 arcmin in Right Ascension and -1.60 arcmin in declination);

Distance of HR687 from the Sun and relative movement

HR687 is distant 154.06 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.

Distance (parsec) 47.26 pc

Distance (light year) 154.06 ly

Heliocentric radial velocity -35 km/s

Proper Motion RA -0.077 arcsec/year

Proper Motion Dec -0.096 arcsec/year

Spectral properties of HR687

HR687 belongs to spectral class F0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 2.45

Spectral Type F0III

Color Index (B-V) 0.27

Temperature of HR687 7658K

The red dot in the diagram below shows where HR687 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR687. Attribution: Richard Powell / CC BY-SA

HR687 star system properties

HR687 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR687 double sysyem:

Main star magnitude 5.82

Secondary star magnitude 7.62

Magnitude difference 1.8

Separation 295.5 arcsec

Alternative designations of HR687

Henry Draper Catalogue HD14622

SAO Catalogue SAO37986

Hipparcos Catalogue HIP11090

Durchmusterung Catalogue BD+40 500

FK5 Catalogue 2161

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Other stars in Andromeda