Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:45  ☀️ Transit: 13:03  🌅 Sunset: 19:23


HR738 is a hypergiant star in the constellation of Triangulum.

HR738 visual magnitude is 5.83. Because of its reltive faintness, HR738 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 HR738:

HR738 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 54°.

Celestial coordinates and finder chart of HR738

HR738 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 HR738 are provided in the following table:

02h 32m 52s
+34° 32’ 32”

The simplified sky map below shows the position of HR738 in the sky:

Finder chart HR738 star
Simplified finder chart for HR738.

Visibility of HR738 from your location

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

Today's HR738 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 55.5°
Max altitude: 73.1°
Azimuth: 304.5°
HR738 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR738

The image below is a photograph of HR738 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 HR738 is -0.066 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR738 star
DSS2 image of HR738. The red arrow shows the motion of HR738 during the next 10000 years (-11.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of HR738 from the Sun and relative movement

HR738 is distant 259.97 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

79.74 pc
259.97 ly
-2 km/s
-0.066 arcsec/year
-0.012 arcsec/year

Spectral properties of HR738

HR738 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where HR738 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR738. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR738