Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Triangulum » 


HR438 is a giant star in the constellation of Triangulum.

HR438 visual magnitude is 6.39. Because of its reltive faintness, HR438 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 HR438:

HR438 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 4°.

Celestial coordinates and finder chart of HR438

HR438 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 HR438 are provided in the following table:

01h 32m 07s
+34° 47’ 59”

The simplified sky map below shows the position of HR438 in the sky:

Finder chart HR438 star
Simplified finder chart for HR438.

Visibility of HR438 from your location

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

Today's HR438 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 55.2°
Max altitude: 73.3°
Azimuth: 304.8°
HR438 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR438

The image below is a photograph of HR438 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 HR438 is -0.008 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR438 star
DSS2 image of HR438. The red arrow shows the motion of HR438 during the next 100000 years (-13.33 arcmin in Right Ascension and -3.33 arcmin in declination);

Distance of HR438 from the Sun and relative movement

HR438 is distant 936.78 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

287.36 pc
936.78 ly
-1 km/s
-0.008 arcsec/year
-0.002 arcsec/year

Spectral properties of HR438

HR438 belongs to spectral class B7 and has a luminosity class of III corresponding to a giant star. HR438 is also a HgMn chemically peculiar star.


The red dot in the diagram below shows where HR438 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR438. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR438