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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: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
sunny DaytimeWhat's Visible Now?
All Constellations » Columba » 


Altitude: -28.9°   Azimuth: 110.9°   Direction: East-South-East

HR1730 is a giant star in the constellation of Columba.

HR1730 visual magnitude is 6.66. Because of its reltive faintness, HR1730 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 HR1730 is -0.018 arcsec per year in Right Ascension and 0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1730 star
DSS2 image of HR1730. The red arrow shows the motion of HR1730 during the next 10000 years (-3.00 arcmin in Right Ascension and 4.33 arcmin in declination);

Key facts about HR1730


HR1730 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.9°
Azimuth: 110.9°
Direction: East-South-East

Celestial coordinates and finder chart of HR1730

HR1730 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 HR1730 are provided in the following table:

05h 15m 47s
-34° 55’ 36”

The simplified sky map below shows the position of HR1730 in the sky:

Finder chart HR1730 star
Simplified finder chart for HR1730.

Visibility of HR1730 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 HR1730 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: 124.9°
Max altitude: 3.6°
Azimuth: 235.1°

Distance of HR1730 from the Sun and relative movement

HR1730 is distant 397.08 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

121.80 pc
397.08 ly
20 km/s
-0.018 arcsec/year
0.026 arcsec/year

Spectral properties of HR1730

HR1730 belongs to spectral class A2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR1730 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1730. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1730