ψ Hydrae (psi Hydrae)

Altitude: -2.7° Azimuth: 124.9° Direction: South-East

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

ψ Hydrae visual magnitude is 4.95. Because of its moderate brightness, ψ 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 ψ Hydrae:

Color of ψ Hydrae ⬤

Magnitude of ψ Hydrae 4.95

Class Giant

VISIBILITY RIGHT NOW

ψ Hydrae (psi Hydrae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -2.7°
Azimuth: 124.9°
Direction: South-East

Celestial coordinates and finder chart of ψ Hydrae

ψ 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 ψ Hydrae are provided in the following table:

Right Ascension J2000 13h 09m 03s

Declination J2000 -23° 07’ 05”

Galactic Longitude 308.19°

Galactic Latitude 39.57°

Constellation Hydra

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

Simplified finder chart for ψ Hydrae (psi Hydrae).

Visibility of ψ 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 ψ Hydrae (psi 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: 113.1° RISE 17:04

Max altitude: 15.4° TRANSIT 20:53

Azimuth: 246.9° SET 0:42

RIGHT NOW ψ Hydrae (psi Hydrae) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ψ Hydrae

The image below is a photograph of ψ 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 ψ Hydrae is -0.024 arcsec per year in Right Ascension and -0.036 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of ψ Hydrae. The red arrow shows the motion of ψ Hydrae during the next 10000 years (-4.00 arcmin in Right Ascension and -6.00 arcmin in declination);

Distance of ψ Hydrae from the Sun and relative movement

ψ Hydrae is distant 230.55 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

Distance (parsec) 70.72 pc

Distance (light year) 230.55 ly

Heliocentric radial velocity -19 km/s

Proper Motion RA -0.024 arcsec/year

Proper Motion Dec -0.036 arcsec/year

Spectral properties of ψ Hydrae

ψ Hydrae belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.70

Spectral Type K1III

Color Index (B-V) 1.05

Temperature of ψ Hydrae 4626K

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

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

Alternative designations of ψ Hydrae

Bayer designation ψ Hydrae
(psi Hydrae)

Flamsteed designation 45 Hydrae

Henry Draper Catalogue HD114149

SAO Catalogue SAO181410

Hipparcos Catalogue HIP64166

Durchmusterung Catalogue BD-22 3515

FK5 Catalogue 3048

In Evidence

Other stars in Hydra