Paikauhale - τ Scorpii (tau Scorpii)

Below the horizon. Rise: 14:39 | Tran: 17:48 | Set: 20:57

Alt: -8.66° Az: 125.29° Direction: South-East

Paikauhale, also designated as τ Scorpii (tau Scorpii), is a hypergiant star of spectral class B0 in the constellation of Scorpius.

Paikauhale visual magnitude is 2.82. Because of its brightness, Paikauhale is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of Paikauhale - τ Scorpii (tau Scorpii) star

DSS2 image of Paikauhale. The red arrow shows the motion of Paikauhale during the next 10000 years (-1.33 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 37m 25s

Declination -28° 15’ 54”

Hour Angle 19h 34m 31s

Sideral Time 12h 11m 57s

J2000

Right Ascension 16h 35m 53s

Declination -28° 12’ 57”

Galactic Coordinates

Galactic Longitude 351.54°

Galactic Latitude 12.81°

Finder Chart

Simplified finder chart for Paikauhale - τ Scorpii (tau Scorpii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 2.82

Class Hypergiant

Absolute magnitude -2.78

Spectral Type B0V

Color Index (B-V) -0.25

Temperature 14924K

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

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

Distance, Radial Speed, Proper Motion

Paikauhale is distant 429.51 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

Distance (parsec) 131.75

Distance (light year) 429.51

Radial Speed 2 km/s

Proper Motion RA -0.008 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Proper Name Paikauhale

Bayer designation τ Scorpii
(tau Scorpii)

Flamsteed designation 23 Scorpii

Henry Draper Catalogue HD149438

SAO Catalogue SAO184481

Hipparcos Catalogue HIP81266

Durchmusterung Catalogue CD-2711015

FK5 Catalogue 620

Visibility from Your Location

Today's Paikauhale - τ Scorpii (tau Scorpii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 118.3° RISE 14:39

Max altitude: 10.3° TRANSIT 17:48

Azimuth: 241.7° SET 20:57

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

Location

Other stars in Scorpius