π Hydrae (pi Hydrae)

π Hydrae is a giant star in the constellation of Hydra.

π Hydrae visual magnitude is 3.27. Because of its moderate brightness, π 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 π Hydrae:

Color of π Hydrae ⬤

Magnitude of π Hydrae 3.27

Class Giant

VISIBILITY RIGHT NOW π Hydrae (pi Hydrae) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of π Hydrae

π Hydrae is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of π Hydrae are provided in the following table:

Right Ascension J2000 14h 06m 22s

Declination J2000 -26° 40’ 57”

Galactic Longitude 323°

Galactic Latitude 33.25°

Constellation Hydra

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

Simplified finder chart for π Hydrae (pi Hydrae).

Visibility of π Hydrae from your location

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

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

Azimuth: 116.7° RISE 23:07

Max altitude: 11.8° TRANSIT 2:33

Azimuth: 243.3° SET 5:55

RIGHT NOW π Hydrae (pi Hydrae) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of π Hydrae

The image below is a photograph of π 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 π Hydrae is 0.044 arcsec per year in Right Ascension and -0.139 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of π Hydrae. The red arrow shows the motion of π Hydrae during the next 1000 years (0.73 arcmin in Right Ascension and -2.32 arcmin in declination);

Distance of π Hydrae from the Sun and relative movement

π Hydrae is distant 101.34 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

Distance (parsec) 31.08 pc

Distance (light year) 101.34 ly

Heliocentric radial velocity 27 km/s

Proper Motion RA 0.044 arcsec/year

Proper Motion Dec -0.139 arcsec/year

Spectral properties of π Hydrae

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

Absolute magnitude 0.81

Spectral Type K2III

Color Index (B-V) 1.12

Temperature of π Hydrae 4472K

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

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

Alternative designations of π Hydrae

Bayer designation π Hydrae
(pi Hydrae)

Flamsteed designation 49 Hydrae

Henry Draper Catalogue HD123123

SAO Catalogue SAO182244

Hipparcos Catalogue HIP68895

Durchmusterung Catalogue CD-2610095

Gliese Catalogue Gl 538.1

FK5 Catalogue 519

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