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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:45  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Ophiuchus » 

36 Ophiuchi

Altitude: -9.5°   Azimuth: 238.8°   Direction: West-South-West

36 Ophiuchi is a multiple main-sequence star in the constellation of Ophiuchus.

36 Ophiuchi visual magnitude is 5.11. Because of its reltive faintness, 36 Ophiuchi should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 36 Ophiuchi:


36 Ophiuchi is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -9.5°
Azimuth: 238.8°
Direction: West-South-West

Celestial coordinates and finder chart of 36 Ophiuchi

36 Ophiuchi is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 36 Ophiuchi are provided in the following table:

17h 15m 20s
-26° 36’ 10”

The simplified sky map below shows the position of 36 Ophiuchi in the sky:

Finder chart 36 Ophiuchi star
Simplified finder chart for 36 Ophiuchi.

Visibility of 36 Ophiuchi from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 36 Ophiuchi rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 116.6°
Max altitude: 11.9°
Azimuth: 243.4°

Digitized Sky Survey image of 36 Ophiuchi

The image below is a photograph of 36 Ophiuchi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 36 Ophiuchi is -0.458 arcsec per year in Right Ascension and -1.142 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.

Image of 36 Ophiuchi star
DSS2 image of 36 Ophiuchi. The red arrow shows the motion of 36 Ophiuchi during the next 100 years (-0.76 arcmin in Right Ascension and -1.90 arcmin in declination);

Distance of 36 Ophiuchi from the Sun and relative movement

36 Ophiuchi is distant 19.51 light years from the Sun

5.99 pc
19.51 ly
-0.458 arcsec/year
-1.142 arcsec/year

Spectral properties of 36 Ophiuchi

36 Ophiuchi belongs to spectral class K1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 36 Ophiuchi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 36 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Alternative designations of 36 Ophiuchi

36 Ophiuchi
Gl 663 B