Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
sunny DaytimeWhat's Visible Now
All Constellations » Aries » 


HR830 is a variable hypergiant star in the constellation of Aries.

HR830 visual magnitude is 5.86. Because of its reltive faintness, HR830 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 HR830:

HR830 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 25°.

Celestial coordinates and finder chart of HR830

HR830 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR830 are provided in the following table:

02h 48m 45s
+25° 11’ 17”

The simplified sky map below shows the position of HR830 in the sky:

Finder chart HR830 star
Simplified finder chart for HR830.

Visibility of HR830 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 HR830 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: 64.8°
Max altitude: 63.7°
Azimuth: 295.2°
HR830 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR830

The image below is a photograph of HR830 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 HR830 is 0.059 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR830 star
DSS2 image of HR830. The red arrow shows the motion of HR830 during the next 10000 years (9.83 arcmin in Right Ascension and -0.67 arcmin in declination);

Distance of HR830 from the Sun and relative movement

HR830 is distant 460.45 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

141.24 pc
460.45 ly
14 km/s
0.059 arcsec/year
-0.004 arcsec/year

Spectral properties of HR830

HR830 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR830 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR830. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR830