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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:02 
Transit: 12:56 
Sunset: 20:51
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All Constellations » Scorpius » 

1 Scorpii

Above the horizon.  Rise: 21:27 | Tran: 1:00 | Set: 4:29
Alt: 10.17°   Az: 159.42°   Direction: South-South-East

1 Scorpii is a main-sequence star of spectral class B3 in the constellation of Scorpius.

1 Scorpii visual magnitude is 4.64. Because of its moderate brightness, 1 Scorpii 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.

Image of 1 Scorpii star
DSS2 image of 1 Scorpii. The red arrow shows the motion of 1 Scorpii during the next 10000 years (-3.00 arcmin in Right Ascension and -4.00 arcmin in declination);

Celestial Coordinates

Apparent

15h 52m 30s
-25° 49’ 35”
22h 29m 33s
14h 22m 04s

J2000

15h 50m 58s
-25° 45’ 05”

Galactic Coordinates

346.1°
21.71°

Finder Chart

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Finder chart for 1 Scorpii.

Magnitude, Color, Spectral Class

4.64
Main-sequence

-1.38
B3V
10795K

The red dot in the diagram below shows where 1 Scorpii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 1 Scorpii. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

1 Scorpii is distant 521.60 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

160.00
521.60
3 km/s
-0.018 arcsec/y
-0.024"/y

Alternative Designations

SAO183854
SAO183854

Visibility from Your Location

Today's 1 Scorpii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 115.8°
Max altitude: 12.7°
Azimuth: 244.2°