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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: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sleep NighttimeWhat's Visible Now?
All Constellations » Aries » 


Altitude: 16.4°   Azimuth: 296.3°   Direction: West-North-West

HR999 is a bright giant star in the constellation of Aries.

HR999 visual magnitude is 4.47. Because of its moderate brightness, HR999 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR999 is -0.008 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR999 star
DSS2 image of HR999. The red arrow shows the motion of HR999 during the next 10000 years (-1.33 arcmin in Right Ascension and -2.67 arcmin in declination);

Key facts about HR999

Bright giant

HR999 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 16.4°
Azimuth: 296.3°
Direction: West-North-West

Celestial coordinates and finder chart of HR999

HR999 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 HR999 are provided in the following table:

03h 20m 20s
+29° 02’ 53”

The simplified sky map below shows the position of HR999 in the sky:

Finder chart HR999 star
Simplified finder chart for HR999.

Visibility of HR999 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 HR999 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: 61.0°
Max altitude: 67.6°
Azimuth: 299.0°

Distance of HR999 from the Sun and relative movement

HR999 is distant 640.47 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

196.46 pc
640.47 ly
-2 km/s
-0.008 arcsec/year
-0.016 arcsec/year

Spectral properties of HR999

HR999 belongs to spectral class K2 and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where HR999 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR999. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR999