We use cookies to deliver essential features and to measure their performance. Learn more.
We're free & ads-free thanks to your support
public LocationGreenwich, UK
Sunrise: 4:57 
Transit: 13:04 
Sunset: 21:10
sunny   (Daytime)   What's Visible Now?
All Constellations » Monoceros » 


Above the horizon.  Rise: 7:09 | Tran: 12:38 | Set: 18:07
Altitude: 13.6°   Azimuth: 242.0°   Direction: West-South-West

HR2639 is a variable giant star of spectral class M2 in the constellation of Monoceros.

HR2639 visual magnitude is 5.2. Because of its faintness, HR2639 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR2639

Finder chart HR2639 star
Simplified finder chart for HR2639.

HR2639 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 HR2639 are provided in the following table:

07h 01m 56s
-05° 43’ 19”
Image of HR2639 star
DSS2 image of HR2639. The red arrow shows the motion of HR2639 during the next 10000 years (-2.67 arcmin in Right Ascension and 0.17 arcmin in declination);

Key facts about HR2639


and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR2639 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2639. Attribution: Richard Powell / CC BY-SA

Distance of HR2639 from the Sun and relative movement

HR2639 is distant 682.01 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

209.21 pc
682.01 ly
3 km/s
-0.016 arcsec/year
0.001 arcsec/year

Alternative designations of HR2639


Visibility of HR2639 from your location

Today's HR2639 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.7°
Max altitude: 32.8°
Azimuth: 264.3°