τ Capricorni (tau Capricorni)

Above the horizon. Rise: 1:19 | Tran: 6:00 | Set: 10:40

Alt: 23.48° Az: 185.86° Direction: South

τ Capricorni is a multiple giant star of spectral class B6 in the constellation of Capricornus.

τ Capricorni visual magnitude is 5.22. Because of its faintness, τ Capricorni is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of τ Capricorni (tau Capricorni) star

DSS2 image of τ Capricorni. The red arrow shows the motion of τ Capricorni during the next 10000 years (1.17 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 40m 41s

Declination -14° 51’ 50”

Hour Angle 00h 22m 14s

Sidereal Time 21h 02m 55s

J2000

Right Ascension 20h 39m 16s

Declination -14° 57’ 16”

Galactic Coordinates

Galactic Longitude 30.94°

Galactic Latitude -30.5°

Finder Chart

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Finder chart for τ Capricorni (tau Capricorni).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.22

Class Giant

Absolute magnitude -3.43

Spectral Type B6III

Color Index (B-V) -0.12

Temperature 11920K

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

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

Star System Properties

τ Capricorni is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the τ Capricorni double sysyem:

Main star magnitude 5.22

Secondary star magnitude 5.82

Magnitude difference 0.6

Separation 0.3 arcsec

Distance, Radial Speed, Proper Motion

τ Capricorni is distant 1,752.69 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 537.63

Distance (light year) 1,752.69

Radial Speed -5 km/s

Proper Motion RA 0.007 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Bayer designation τ Capricorni
(tau Capricorni)

Flamsteed designation 14 Capricorni

Henry Draper Catalogue HD196662

SAO Catalogue SAO163771

Hipparcos Catalogue HIP101923

Durchmusterung Catalogue BD-15 5743

Aitken Double Star Catalogue ADS14099

Visibility from Your Location

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

Azimuth: 104.9° RISE 1:19

Max altitude: 23.7° TRANSIT 6:00

Azimuth: 255.1° SET 10:40

Set Location

Other stars in Capricornus