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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: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 

HR1724

Altitude: -26.0°   Azimuth: 312.3°   Direction: North-West

HR1724 is a hypergiant star in the constellation of Orion.

HR1724 visual magnitude is 6.42. Because of its reltive faintness, HR1724 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 HR1724 is -0.011 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1724 star
DSS2 image of HR1724. The red arrow shows the motion of HR1724 during the next 10000 years (-1.83 arcmin in Right Ascension and -1.50 arcmin in declination);

Key facts about HR1724

6.42
Hypergiant

HR1724 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -26.0°
Azimuth: 312.3°
Direction: North-West

Celestial coordinates and finder chart of HR1724

HR1724 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 HR1724 are provided in the following table:

05h 16m 41s
+01° 56’ 49”
199.81°
-19.99°
Orion

The simplified sky map below shows the position of HR1724 in the sky:

Finder chart HR1724 star
Simplified finder chart for HR1724.

Visibility of HR1724 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 HR1724 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: 88.1°
Max altitude: 40.5°
Azimuth: 271.9°

Distance of HR1724 from the Sun and relative movement

HR1724 is distant 608.21 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

186.57 pc
608.21 ly
-8 km/s
-0.011 arcsec/year
-0.009 arcsec/year

Spectral properties of HR1724

HR1724 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

0.07
A0V
10382K

The red dot in the diagram below shows where HR1724 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1724. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1724

SAO112588
SAO112588