ξ1 Sagittarii (xi1 Sagittarii)

Below the horizon. Rise: 16:39 | Tran: 20:45 | Set: 0:51

Alt: -58.89° Az: 350.75° Direction: North

ξ1 Sagittarii is a hypergiant star of spectral class A0 in the constellation of Sagittarius.

ξ1 Sagittarii visual magnitude is 5.08. Because of its faintness, ξ1 Sagittarii 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 ξ1 Sagittarii (xi1 Sagittarii) star

DSS2 image of ξ1 Sagittarii. The red arrow shows the motion of ξ1 Sagittarii during the next 100000 years (-1.67 arcmin in Right Ascension and -11.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 58m 48s

Declination -20° 37’ 18”

Hour Angle 11h 39m 37s

Sideral Time 06h 38m 26s

J2000

Right Ascension 18h 57m 20s

Declination -20° 39’ 23”

Galactic Coordinates

Galactic Longitude 14.99°

Galactic Latitude -10.5°

Finder Chart

Simplified finder chart for ξ1 Sagittarii (xi1 Sagittarii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.08

Class Hypergiant

Absolute magnitude -5.86

Spectral Type A0II

Color Index (B-V) 0.13

Temperature 8748K

The red dot in the diagram below shows where ξ1 Sagittarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ξ1 Sagittarii. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

ξ1 Sagittarii is distant 5,015.38 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

Distance (parsec) 1,538.46

Distance (light year) 5,015.38

Radial Speed 2 km/s

Proper Motion RA -0.001 arcsec/y

Proper Motion Dec -0.007"/y

Alternative Designations

Bayer designation ξ1 Sagittarii
(xi1 Sagittarii)

Flamsteed designation 36 Sagittarii

Henry Draper Catalogue HD175687

SAO Catalogue SAO187498

Hipparcos Catalogue HIP93057

Durchmusterung Catalogue BD-20 5339

Visibility from Your Location

Today's ξ1 Sagittarii (xi1 Sagittarii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.6° RISE 16:39

Max altitude: 17.9° TRANSIT 20:45

Azimuth: 249.4° SET 0:51

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 Sagittarius