We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
Help keep this site free and ads-free: donate now!
public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 5:26 
Transit: 12:55 
Sunset: 20:25
sleep   (Nighttime)   What's Visible Now?

HR4139

Altitude: -15.8°   Azimuth: 215.2°   Direction: South-West

HR4139 is a giant star in the constellation of Vela.

HR4139 visual magnitude is 5.91. Because of its reltive faintness, HR4139 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4139 is -0.011 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4139 star
DSS2 image of HR4139. The red arrow shows the motion of HR4139 during the next 10000 years (-1.83 arcmin in Right Ascension and -5.33 arcmin in declination);

Key facts about HR4139

5.91
Giant

HR4139 is below the horizon from Greenwich, United Kingdom.

Altitude: -15.8°
Azimuth: 215.2°
Direction: South-West

Celestial coordinates and finder chart of HR4139

HR4139 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4139 are provided in the following table:

10h 32m 33s
-44° 37’ 08”
278.49°
11.56°
Vela

The simplified sky map below shows the position of HR4139 in the sky:

Finder chart HR4139 star
Simplified finder chart for HR4139.

Visibility of HR4139 from your location

Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4139 is currently not visible from Greenwich, United Kingdom

Distance of HR4139 from the Sun and relative movement

HR4139 is distant 397.08 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

121.80 pc
397.08 ly
-10 km/s
-0.011 arcsec/year
-0.032 arcsec/year

Spectral properties of HR4139

HR4139 belongs to spectral class G6 and has a luminosity class of III corresponding to a giant star.

0.48
G6III
4943K

The red dot in the diagram below shows where HR4139 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR4139. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4139

SAO222129
SAO222129