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: 7:02  
clear_day Transit: 12:47  
SunsetSet: 18:32 south
sunny DaytimeWhat's Visible Now
All Constellations » Hydra » 

54 Hydrae

Altitude: -20.5°   Azimuth: 105.5°   Direction: East-South-East

54 Hydrae is a double giant star in the constellation of Hydra.

54 Hydrae visual magnitude is 4.94. Because of its moderate brightness, 54 Hydrae 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 54 Hydrae:


54 Hydrae is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -20.5°
Azimuth: 105.5°
Direction: East-South-East

Celestial coordinates and finder chart of 54 Hydrae

54 Hydrae 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 54 Hydrae are provided in the following table:

14h 46m 00s
-25° 26’ 35”

The simplified sky map below shows the position of 54 Hydrae in the sky:

Finder chart 54 Hydrae star
Simplified finder chart for 54 Hydrae.

Visibility of 54 Hydrae 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 54 Hydrae 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: 115.4°
Max altitude: 13.1°
Azimuth: 244.6°

Digitized Sky Survey image of 54 Hydrae

The image below is a photograph of 54 Hydrae 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 54 Hydrae is -0.15 arcsec per year in Right Ascension and -0.104 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 54 Hydrae star
DSS2 image of 54 Hydrae. The red arrow shows the motion of 54 Hydrae during the next 1000 years (-2.50 arcmin in Right Ascension and -1.73 arcmin in declination);

Distance of 54 Hydrae from the Sun and relative movement

54 Hydrae is distant 99.21 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

30.43 pc
99.21 ly
-13 km/s
-0.15 arcsec/year
-0.104 arcsec/year

Spectral properties of 54 Hydrae

54 Hydrae belongs to spectral class F2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 54 Hydrae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 54 Hydrae. Attribution: Richard Powell / CC BY-SA

54 Hydrae star system properties

54 Hydrae is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 54 Hydrae double sysyem:

8.5 arcsec

Alternative designations of 54 Hydrae

Gl 561.1A