Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]


HR3808 is a hypergiant star in the constellation of Hydra.

HR3808 visual magnitude is 5.01. Because of its reltive faintness, HR3808 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 HR3808:

HR3808 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR3808

HR3808 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 HR3808 are provided in the following table:

09h 33m 12s
-21° 06’ 56”

The simplified sky map below shows the position of HR3808 in the sky:

Finder chart HR3808 star
Simplified finder chart for HR3808.

Visibility of HR3808 from your location

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

Today's HR3808 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 111.1°
Max altitude: 17.4°
Azimuth: 248.9°
HR3808 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3808

The image below is a photograph of HR3808 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 HR3808 is -0.02 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3808 star
DSS2 image of HR3808. The red arrow shows the motion of HR3808 during the next 10000 years (-3.33 arcmin in Right Ascension and 2.50 arcmin in declination);

Distance of HR3808 from the Sun and relative movement

HR3808 is distant 334.02 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

102.46 pc
334.02 ly
13 km/s
-0.02 arcsec/year
0.015 arcsec/year

Spectral properties of HR3808

HR3808 belongs to spectral class K0 and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3808 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3808. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3808

Gl 355.2