We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Sextans » 

HR3959

Altitude: 12.0°   Azimuth: 237.4°   Direction: West-South-West

HR3959 is a hypergiant star in the constellation of Sextans.

HR3959 visual magnitude is 6.12. Because of its reltive faintness, HR3959 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 HR3959:

6.12
Hypergiant

HR3959 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 12.0°
Azimuth: 237.4°
Direction: West-South-West

Celestial coordinates and finder chart of HR3959

HR3959 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 HR3959 are provided in the following table:

10h 03m 41s
-09° 34’ 26”
249.14°
35.24°
Sextans

The simplified sky map below shows the position of HR3959 in the sky:

Finder chart HR3959 star
Simplified finder chart for HR3959.

Visibility of HR3959 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 HR3959 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: 99.6°
Max altitude: 28.9°
Azimuth: 260.4°

Digitized Sky Survey image of HR3959

The image below is a photograph of HR3959 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 HR3959 is 0.005 arcsec per year in Right Ascension and -0.011 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3959 star
DSS2 image of HR3959. The red arrow shows the motion of HR3959 during the next 10000 years (0.83 arcmin in Right Ascension and -1.83 arcmin in declination);

Distance of HR3959 from the Sun and relative movement

HR3959 is distant 1,258.69 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

386.10 pc
1,258.69 ly
9 km/s
0.005 arcsec/year
-0.011 arcsec/year

Spectral properties of HR3959

HR3959 belongs to spectral class K0

-1.81
K0
3568K

The red dot in the diagram below shows where HR3959 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3959. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3959

SAO137326
SAO137326