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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 


Altitude: -19.6°   Azimuth: 293.9°   Direction: West-North-West

HR1717 is a hypergiant star in the constellation of Orion.

HR1717 visual magnitude is 6.15. Because of its reltive faintness, HR1717 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR1717 is -0.043 arcsec per year in Right Ascension and 0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1717 star
DSS2 image of HR1717. The red arrow shows the motion of HR1717 during the next 10000 years (-7.17 arcmin in Right Ascension and 6.17 arcmin in declination);

Key facts about HR1717


HR1717 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.6°
Azimuth: 293.9°
Direction: West-North-West

Celestial coordinates and finder chart of HR1717

HR1717 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1717 are provided in the following table:

05h 15m 18s
-01° 24’ 33”

The simplified sky map below shows the position of HR1717 in the sky:

Finder chart HR1717 star
Simplified finder chart for HR1717.

Visibility of HR1717 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 HR1717 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: 91.4°
Max altitude: 37.1°
Azimuth: 268.6°

Distance of HR1717 from the Sun and relative movement

HR1717 is distant 149.75 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

45.93 pc
149.75 ly
14 km/s
-0.043 arcsec/year
0.037 arcsec/year

Spectral properties of HR1717

HR1717 belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where HR1717 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1717. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1717