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: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
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All Constellations » Triangulum Australe » 


Altitude: -40.8°   Azimuth: 204.5°   Direction: South-South-West

HR5644 is a variable star in the constellation of Triangulum Australe.

HR5644 visual magnitude is 5.81. Because of its reltive faintness, HR5644 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 HR5644:


HR5644 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -40.8°
Azimuth: 204.5°
Direction: South-South-West

Celestial coordinates and finder chart of HR5644

HR5644 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR5644 are provided in the following table:

15h 14m 19s
-70° 04’ 45”
Triangulum Australe

The simplified sky map below shows the position of HR5644 in the sky:

Finder chart HR5644 star
Simplified finder chart for HR5644.

Visibility of HR5644 from your location

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

HR5644 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR5644

The image below is a photograph of HR5644 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 HR5644 is -0.001 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR5644 star
DSS2 image of HR5644. The red arrow shows the motion of HR5644 during the next 100000 years (-1.67 arcmin in Right Ascension and -10.00 arcmin in declination);

Distance of HR5644 from the Sun and relative movement

HR5644 is distant 1,495.41 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

458.72 pc
1,495.41 ly
-4 km/s
-0.001 arcsec/year
-0.006 arcsec/year

Spectral properties of HR5644

HR5644 belongs to spectral class C5


The red dot in the diagram below shows where HR5644 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR5644. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR5644