ζ1 Librae (zeta1 Librae)

Below the horizon. Rise: 12:47 | Tran: 17:16 | Set: 21:46

Alt: -41.85° Az: 59.86° Direction: East-North-East

ζ1 Librae is a giant star of spectral class K5 in the constellation of Libra.

ζ1 Librae visual magnitude is 5.64. Because of its faintness, ζ1 Librae 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.

DSS2 image of ζ1 Librae. The red arrow shows the motion of ζ1 Librae during the next 10000 years (2.83 arcmin in Right Ascension and -5.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 29m 39s

Declination -16° 48’ 01”

Hour Angle 14h 49m 09s

Sideral Time 06h 18m 49s

J2000

Right Ascension 15h 28m 15s

Declination -16° 42’ 59”

Galactic Coordinates

Galactic Longitude 348.46°

Galactic Latitude 31.96°

Finder Chart

Simplified finder chart for ζ1 Librae (zeta1 Librae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.64

Class Giant

Absolute magnitude -1.58

Spectral Type K5III

Color Index (B-V) 1.55

Temperature 3720K

The red dot in the diagram below shows where ζ1 Librae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ζ1 Librae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

ζ1 Librae is distant 908.08 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

Distance (parsec) 278.55

Distance (light year) 908.08

Radial Speed -21 km/s

Proper Motion RA 0.017 arcsec/y

Proper Motion Dec -0.032"/y

Alternative Designations

Bayer designation ζ1 Librae
(zeta1 Librae)

Flamsteed designation 32 Librae

Henry Draper Catalogue HD137744

SAO Catalogue SAO159280

Hipparcos Catalogue HIP75730

Durchmusterung Catalogue BD-16 4089

FK5 Catalogue 1407

Visibility from Your Location

Today's ζ1 Librae (zeta1 Librae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.8° RISE 12:47

Max altitude: 21.7° TRANSIT 17:16

Azimuth: 253.2° SET 21:46

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

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Location

Other stars in Libra