Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:43  ☀️ Transit: 13:03  🌅 Sunset: 19:24

29 Ophiuchi

29 Ophiuchi is a hypergiant star in the constellation of Ophiuchus.

29 Ophiuchi visual magnitude is 6.26. Because of its reltive faintness, 29 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 29 Ophiuchi:

29 Ophiuchi is above the horizon from Greenwich, United Kingdom [change]. Altitude: 20°.

Celestial coordinates and finder chart of 29 Ophiuchi

29 Ophiuchi is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 29 Ophiuchi are provided in the following table:

17h 01m 51s
-18° 53’ 08”

The simplified sky map below shows the position of 29 Ophiuchi in the sky:

Finder chart 29 Ophiuchi star
Simplified finder chart for 29 Ophiuchi.

Visibility of 29 Ophiuchi from your location

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

Today's 29 Ophiuchi rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.9°
Max altitude: 19.6°
Azimuth: 251.1°
29 Ophiuchi is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 29 Ophiuchi

The image below is a photograph of 29 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 29 Ophiuchi is -0.038 arcsec per year in Right Ascension and -0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 29 Ophiuchi star
DSS2 image of 29 Ophiuchi. The red arrow shows the motion of 29 Ophiuchi during the next 10000 years (-6.33 arcmin in Right Ascension and -3.00 arcmin in declination);

Distance of 29 Ophiuchi from the Sun and relative movement

29 Ophiuchi is distant 450.28 light years from the Sun and it is moving far from the Sun at the speed of 44 kilometers per second.

138.12 pc
450.28 ly
44 km/s
-0.038 arcsec/year
-0.018 arcsec/year

Spectral properties of 29 Ophiuchi

29 Ophiuchi belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where 29 Ophiuchi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 29 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Alternative designations of 29 Ophiuchi

29 Ophiuchi