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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
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sunny DaytimeWhat's Visible Now?
All Constellations » Orion » 


Altitude: -19.2°   Azimuth: 289.5°   Direction: West-North-West

HR1830 is a variable giant star in the constellation of Orion.

HR1830 visual magnitude is 5.79. Because of its reltive faintness, HR1830 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 HR1830:


HR1830 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.2°
Azimuth: 289.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR1830

HR1830 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 HR1830 are provided in the following table:

05h 29m 23s
-03° 26’ 47”

The simplified sky map below shows the position of HR1830 in the sky:

Finder chart HR1830 star
Simplified finder chart for HR1830.

Visibility of HR1830 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 HR1830 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: 93.4°
Max altitude: 35.1°
Azimuth: 266.6°

Digitized Sky Survey image of HR1830

The image below is a photograph of HR1830 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 HR1830 is -0.044 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 HR1830 star
DSS2 image of HR1830. The red arrow shows the motion of HR1830 during the next 10000 years (-7.33 arcmin in Right Ascension and -1.33 arcmin in declination);

Distance of HR1830 from the Sun and relative movement

HR1830 is distant 467.05 light years from the Sun and it is moving far from the Sun at the speed of 23 kilometers per second.

143.27 pc
467.05 ly
23 km/s
-0.044 arcsec/year
-0.008 arcsec/year

Spectral properties of HR1830

HR1830 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 HR1830 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1830. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1830