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: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
sunny DaytimeWhat's Visible Now
All Constellations » Hydra » 


Altitude: -32.0°   Azimuth: 267.5°   Direction: West

HR3919 is a giant star in the constellation of Hydra.

HR3919 visual magnitude is 4.88. Because of its moderate brightness, HR3919 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR3919:


HR3919 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -32.0°
Azimuth: 267.5°
Direction: West

Celestial coordinates and finder chart of HR3919

HR3919 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 HR3919 are provided in the following table:

09h 54m 12s
-25° 55’ 57”

The simplified sky map below shows the position of HR3919 in the sky:

Finder chart HR3919 star
Simplified finder chart for HR3919.

Visibility of HR3919 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 HR3919 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: 115.9°
Max altitude: 12.6°
Azimuth: 244.1°

Digitized Sky Survey image of HR3919

The image below is a photograph of HR3919 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 HR3919 is -0.18 arcsec per year in Right Ascension and 0.054 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3919 star
DSS2 image of HR3919. The red arrow shows the motion of HR3919 during the next 1000 years (-3.00 arcmin in Right Ascension and 0.90 arcmin in declination);

Distance of HR3919 from the Sun and relative movement

HR3919 is distant 335.74 light years from the Sun and it is moving far from the Sun at the speed of 51 kilometers per second.

102.99 pc
335.74 ly
51 km/s
-0.18 arcsec/year
0.054 arcsec/year

Spectral properties of HR3919

HR3919 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3919 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3919. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3919