Alnasl - γ2 Sagittarii (gamma2 Sagittarii)

Below the horizon. Rise: 0:10 | Tran: 3:03 | Set: 5:52

Alt: -8.31° Az: 129.65° Direction: South-East

Alnasl, also designated as γ2 Sagittarii (gamma2 Sagittarii), is a variable hypergiant star of spectral class K0 in the constellation of Sagittarius.

Alnasl visual magnitude is 2.99. Because of its brightness, Alnasl 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 Alnasl - γ2 Sagittarii (gamma2 Sagittarii) star

DSS2 image of Alnasl. The red arrow shows the motion of Alnasl during the next 1000 years (-0.88 arcmin in Right Ascension and -3.08 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 07m 26s

Declination -30° 25’ 12”

Hour Angle 19h 51m 43s

Sidereal Time 13h 59m 10s

J2000

Right Ascension 18h 05m 48s

Declination -30° 25’ 27”

Galactic Coordinates

Galactic Longitude 0.92°

Galactic Latitude -4.54°

Finder Chart

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Finder chart for Alnasl - γ2 Sagittarii (gamma2 Sagittarii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 2.99

Class Hypergiant

Absolute magnitude 0.64

Spectral Type K0III

Color Index (B-V) 1

Temperature 4743K

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

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

Distance, Radial Speed, Proper Motion

Alnasl is distant 96.05 light years from the Sun and it is moving far from the Sun at the speed of 22 kilometers per second.

Distance (parsec) 29.46

Distance (light year) 96.05

Radial Speed 22 km/s

Proper Motion RA -0.053 arcsec/y

Proper Motion Dec -0.185"/y

Alternative Designations

Proper Name Alnasl

Bayer designation γ2 Sagittarii
(gamma2 Sagittarii)

Flamsteed designation 10 Sagittarii

Henry Draper Catalogue HD165135

SAO Catalogue SAO209696

Hipparcos Catalogue HIP88635

Durchmusterung Catalogue CD-3015215

FK5 Catalogue 679

General Catalogue of Variable Stars 10173

Visibility from Your Location

Today's Alnasl - γ2 Sagittarii (gamma2 Sagittarii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 120.4° RISE 0:10

Max altitude: 8.1° TRANSIT 3:03

Azimuth: 239.6° SET 5:52

Set Location

Other stars in Sagittarius