Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project, thank you!
🌎  Observing from: Greenwich, United Kingdom [change]

27 Hydrae

27 Hydrae is a multiple giant star in the constellation of Hydra.

27 Hydrae visual magnitude is 4.8. Because of its moderate brightness, 27 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 27 Hydrae:

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

Celestial coordinates and finder chart of 27 Hydrae

27 Hydrae 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 27 Hydrae are provided in the following table:

09h 20m 29s
-09° 33’ 20”

The simplified sky map below shows the position of 27 Hydrae in the sky:

Finder chart 27 Hydrae star
Simplified finder chart for 27 Hydrae.

Visibility of 27 Hydrae from your location

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

Today's 27 Hydrae rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.6°
Max altitude: 29.0°
Azimuth: 260.4°
27 Hydrae is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 27 Hydrae

The image below is a photograph of 27 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 27 Hydrae is -0.014 arcsec per year in Right Ascension and -0.029 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 27 Hydrae star
DSS2 image of 27 Hydrae. The red arrow shows the motion of 27 Hydrae during the next 10000 years (-2.33 arcmin in Right Ascension and -4.83 arcmin in declination);

Distance of 27 Hydrae from the Sun and relative movement

27 Hydrae is distant 243.47 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

74.68 pc
243.47 ly
25 km/s
-0.014 arcsec/year
-0.029 arcsec/year

Spectral properties of 27 Hydrae

27 Hydrae belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 27 Hydrae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 27 Hydrae. Attribution: Richard Powell / CC BY-SA

27 Hydrae star system properties

27 Hydrae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 27 Hydrae double sysyem:

231.8 arcsec

Alternative designations of 27 Hydrae