11 Sagittarii

Below the horizon. Rise: 15:55 | Tran: 19:40 | Set: 23:25

Alt: -61.69° Az: 13.73° Direction: North-North-East

11 Sagittarii is a double hypergiant star of spectral class K0 in the constellation of Sagittarius.

11 Sagittarii visual magnitude is 4.98. Because of its moderate brightness, 11 Sagittarii 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 11 Sagittarii. The red arrow shows the motion of 11 Sagittarii during the next 10000 years (2.83 arcmin in Right Ascension and -3.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 13m 13s

Declination -23° 41’ 37”

Hour Angle 12h 28m 14s

Sideral Time 06h 41m 28s

J2000

Right Ascension 18h 11m 43s

Declination -23° 42’ 03”

Galactic Coordinates

Galactic Longitude 7.46°

Galactic Latitude -2.45°

Finder Chart

Simplified finder chart for 11 Sagittarii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.98

Class Hypergiant

Absolute magnitude 0.61

Spectral Type K0III

Color Index (B-V) 1.05

Temperature 4626K

The red dot in the diagram below shows where 11 Sagittarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 11 Sagittarii. Attribution: Richard Powell / CC BY-SA

Star System Properties

11 Sagittarii is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 11 Sagittarii double sysyem:

Main star magnitude 4.98

Secondary star magnitude 10.68

Magnitude difference 5.7

Separation 42.1 arcsec

Distance, Radial Speed, Proper Motion

11 Sagittarii is distant 244.19 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 74.91

Distance (light year) 244.19

Radial Speed 4 km/s

Proper Motion RA 0.017 arcsec/y

Proper Motion Dec -0.019"/y

Alternative Designations

Flamsteed designation 11 Sagittarii

Henry Draper Catalogue HD166464

SAO Catalogue SAO186437

Hipparcos Catalogue HIP89153

Durchmusterung Catalogue CD-2314047

Aitken Double Star Catalogue ADS11133

Visibility from Your Location

Today's 11 Sagittarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.7° RISE 15:55

Max altitude: 14.8° TRANSIT 19:40

Azimuth: 246.3° SET 23:25

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

Location

Other stars in Sagittarius