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
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All Constellations » Columba » 


HR1797 is a giant star in the constellation of Columba.

HR1797 visual magnitude is 6.82. Because of its reltive faintness, HR1797 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 HR1797:

HR1797 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR1797

HR1797 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 HR1797 are provided in the following table:

05h 23m 39s
-37° 20’ 12”

The simplified sky map below shows the position of HR1797 in the sky:

Finder chart HR1797 star
Simplified finder chart for HR1797.

Visibility of HR1797 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 HR1797 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: 127.3°
Max altitude: 1.2°
Azimuth: 232.7°
HR1797 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1797

The image below is a photograph of HR1797 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 HR1797 is 0.034 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1797 star
DSS2 image of HR1797. The red arrow shows the motion of HR1797 during the next 10000 years (5.67 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of HR1797 from the Sun and relative movement

HR1797 is distant 547.90 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

168.07 pc
547.90 ly
30 km/s
0.034 arcsec/year
0.008 arcsec/year

Spectral properties of HR1797

HR1797 belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR1797 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1797. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1797