17 Hydrae

Altitude: 20.7° Azimuth: 224.5° Direction: South-West

17 Hydrae is a double star in the constellation of Hydra.

17 Hydrae visual magnitude is 6.67. Because of its reltive faintness, 17 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 17 Hydrae:

Color of 17 Hydrae ⬤

Magnitude of 17 Hydrae 6.67

Class

VISIBILITY RIGHT NOW

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

Altitude: 20.7°
Azimuth: 224.5°
Direction: South-West

Celestial coordinates and finder chart of 17 Hydrae

17 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 17 Hydrae are provided in the following table:

Right Ascension J2000 08h 55m 29s

Declination J2000 -07° 58’ 15”

Galactic Longitude 235.69°

Galactic Latitude 23.01°

Constellation Hydra

The simplified sky map below shows the position of 17 Hydrae in the sky:

Simplified finder chart for 17 Hydrae.

Visibility of 17 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 17 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: 98.0° RISE 4:26

Max altitude: 30.5° TRANSIT 9:43

Azimuth: 262.0° SET 15:01

Digitized Sky Survey image of 17 Hydrae

The image below is a photograph of 17 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 17 Hydrae is 0.002 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 17 Hydrae. The red arrow shows the motion of 17 Hydrae during the next 10000 years (0.33 arcmin in Right Ascension and -4.00 arcmin in declination);

Spectral properties of 17 Hydrae

17 Hydrae belongs to spectral class A2

Spectral Type A2

Color Index (B-V) 0.22

Temperature of 17 Hydrae 8011K

17 Hydrae star system properties

17 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 17 Hydrae double sysyem:

Main star magnitude 6.67

Secondary star magnitude 6.97

Magnitude difference 0.3

Separation 4.1 arcsec

Alternative designations of 17 Hydrae

Flamsteed designation 17 Hydrae

Henry Draper Catalogue HD76370

SAO Catalogue SAO136409

Durchmusterung Catalogue BD-07 2661

Aitken Double Star Catalogue ADS7093

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