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🌎  Greenwich, United Kingdom [change]

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:

5.82
Hypergiant
HR687 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 3°.

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:

02h 22m 50s
+41° 23’ 47”
140.8°
-18.28°
Andromeda

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

Finder chart HR687 star
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 07:49 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.

Image of HR687 star
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.

47.26 pc
154.06 ly
-35 km/s
-0.077 arcsec/year
-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.

2.45
F0III
7658K

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

HR 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:

5.82
7.62
1.8
295.5 arcsec

Alternative designations of HR687

SAO37986
SAO37986