τ2 Hydrae (tau2 Hydrae)

Above the horizon. Rise: 4:50 | Tran: 10:42 | Set: 16:33

Alt: 32.91° Az: 148.88° Direction: South-South-East

τ2 Hydrae is a main-sequence star of spectral class A3 in the constellation of Hydra.

τ2 Hydrae visual magnitude is 4.57. Because of its moderate brightness, τ2 Hydrae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of τ2 Hydrae. The red arrow shows the motion of τ2 Hydrae during the next 10000 years (-2.00 arcmin in Right Ascension and -1.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 33m 14s

Declination -01° 17’ 42”

Hour Angle 22h 17m 06s

Sideral Time 07h 50m 21s

J2000

Right Ascension 09h 31m 58s

Declination -01° 11’ 06”

Galactic Coordinates

Galactic Longitude 235.15°

Galactic Latitude 34.34°

Finder Chart

Simplified finder chart for τ2 Hydrae (tau2 Hydrae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.57

Class Main-sequence

Absolute magnitude -1.17

Spectral Type A3V

Color Index (B-V) 0.1

Temperature 9028K

The red dot in the diagram below shows where τ2 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of τ2 Hydrae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

τ2 Hydrae is distant 458.51 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 140.65

Distance (light year) 458.51

Radial Speed 6 km/s

Proper Motion RA -0.012 arcsec/y

Proper Motion Dec -0.011"/y

Alternative Designations

Bayer designation τ2 Hydrae
(tau2 Hydrae)

Flamsteed designation 32 Hydrae

Henry Draper Catalogue HD82446

SAO Catalogue SAO136932

Hipparcos Catalogue HIP46776

Durchmusterung Catalogue BD-00 2211

Visibility from Your Location

Today's τ2 Hydrae (tau2 Hydrae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 91.3° RISE 4:50

Max altitude: 37.2° TRANSIT 10:42

Azimuth: 268.7° SET 16:33

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Hydra