Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Leo » 


Altitude: 53.5°   Azimuth: 214.4°   Direction: South-West

HR3869 is a double hypergiant star in the constellation of Leo.

HR3869 visual magnitude is 6.5. Because of its reltive faintness, HR3869 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 HR3869:


HR3869 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 53.5°
Azimuth: 214.4°
Direction: South-West

Celestial coordinates and finder chart of HR3869

HR3869 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 HR3869 are provided in the following table:

09h 44m 30s
+18° 51’ 48”

The simplified sky map below shows the position of HR3869 in the sky:

Finder chart HR3869 star
Simplified finder chart for HR3869.

Visibility of HR3869 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 HR3869 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: 71.1°
Max altitude: 57.4°
Azimuth: 288.9°
HR3869 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3869

The image below is a photograph of HR3869 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 HR3869 is -0.007 arcsec per year in Right Ascension and -0.054 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3869 star
DSS2 image of HR3869. The red arrow shows the motion of HR3869 during the next 10000 years (-1.17 arcmin in Right Ascension and -9.00 arcmin in declination);

Distance of HR3869 from the Sun and relative movement

HR3869 is distant 464.39 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

142.45 pc
464.39 ly
-1 km/s
-0.007 arcsec/year
-0.054 arcsec/year

Spectral properties of HR3869

HR3869 belongs to spectral class K0


The red dot in the diagram below shows where HR3869 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3869. Attribution: Richard Powell / CC BY-SA

HR3869 star system properties

HR3869 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR3869 double sysyem:

31.2 arcsec

Alternative designations of HR3869