44 Hydrae

Altitude: 14.8° Azimuth: 180.6° Direction: South

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

44 Hydrae visual magnitude is 5.08. Because of its reltive faintness, 44 Hydrae 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 44 Hydrae:

Color of 44 Hydrae ⬤

Magnitude of 44 Hydrae 5.08

Class Giant

VISIBILITY RIGHT NOW

44 Hydrae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 14.8°
Azimuth: 180.6°
Direction: South

Celestial coordinates and finder chart of 44 Hydrae

44 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 44 Hydrae are provided in the following table:

Right Ascension J2000 10h 34m 00s

Declination J2000 -23° 44’ 43”

Galactic Longitude 266.62°

Galactic Latitude 29.27°

Constellation Hydra

The simplified sky map below shows the position of 44 Hydrae in the sky:

Simplified finder chart for 44 Hydrae.

Visibility of 44 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 44 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: 113.7° RISE 7:37

Max altitude: 14.8° TRANSIT 11:22

Azimuth: 246.3° SET 15:06

Digitized Sky Survey image of 44 Hydrae

The image below is a photograph of 44 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 44 Hydrae is -0.008 arcsec per year in Right Ascension and 0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 44 Hydrae. The red arrow shows the motion of 44 Hydrae during the next 10000 years (-1.33 arcmin in Right Ascension and 3.50 arcmin in declination);

Distance of 44 Hydrae from the Sun and relative movement

44 Hydrae is distant 633.01 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

Distance (parsec) 194.17 pc

Distance (light year) 633.01 ly

Heliocentric radial velocity -4 km/s

Proper Motion RA -0.008 arcsec/year

Proper Motion Dec 0.021 arcsec/year

Spectral properties of 44 Hydrae

44 Hydrae belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -1.36

Spectral Type K4III

Color Index (B-V) 1.6

Temperature of 44 Hydrae 3649K

The red dot in the diagram below shows where 44 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 44 Hydrae. Attribution: Richard Powell / CC BY-SA

44 Hydrae star system properties

44 Hydrae 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 44 Hydrae double sysyem:

Main star magnitude 5.08

Secondary star magnitude 13.78

Magnitude difference 8.7

Separation 19.1 arcsec

Alternative designations of 44 Hydrae

Flamsteed designation 44 Hydrae

Henry Draper Catalogue HD91550

SAO Catalogue SAO178979

Hipparcos Catalogue HIP51718

Durchmusterung Catalogue BD-22 2946

FK5 Catalogue 399

Aitken Double Star Catalogue ADS7834

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