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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:35 
Transit: 12:55 
Sunset: 19:14
sunny   (Daytime)  
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All Constellations » Ophiuchus » 

Cebalrai - β Ophiuchi (beta Ophiuchi)

Above the horizon.  Rise: 12:46 | Tran: 19:07 | Set: 1:32
Alt: 19.04°   Az: 107.37°   Direction: East-South-East

Cebalrai, also designated as β Ophiuchi (beta Ophiuchi), is a giant star of spectral class K2 in the constellation of Ophiuchus.

Cebalrai visual magnitude is 2.77. Because of its brightness, Cebalrai 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 Cebalrai - β Ophiuchi (beta Ophiuchi) star
DSS2 image of Cebalrai. The red arrow shows the motion of Cebalrai during the next 1000 years (-0.67 arcmin in Right Ascension and 2.65 arcmin in declination);

Celestial Coordinates

Apparent

17h 44m 41s
+04° 33’ 27”
19h 40m 39s
13h 25m 21s

J2000

17h 43m 28s
+04° 34’ 01”

Galactic Coordinates

29.21°
17.19°

Finder Chart

Finder chart Cebalrai - β Ophiuchi (beta Ophiuchi) star
Simplified finder chart for Cebalrai - β Ophiuchi (beta Ophiuchi).

Magnitude, Color, Spectral Class

2.77
Giant

0.77
K2III
4389K

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

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

Distance, Radial Speed, Proper Motion

Cebalrai is distant 81.95 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

25.14
81.95
-12 km/s
-0.04 arcsec/y
0.159"/y

Alternative Designations

Cebalrai
β Ophiuchi
(beta Ophiuchi)
60 Ophiuchi
SAO122671
SAO122671

Visibility from Your Location

Today's Cebalrai - β Ophiuchi (beta Ophiuchi) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.4°
Max altitude: 43.1°
Azimuth: 274.6°