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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: 7:49  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Ophiuchus » 

43 Ophiuchi

Altitude: -15.9°   Azimuth: 244.5°   Direction: West-South-West

43 Ophiuchi is a giant star in the constellation of Ophiuchus.

43 Ophiuchi visual magnitude is 5.35. Because of its reltive faintness, 43 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 43 Ophiuchi:


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

Altitude: -15.9°
Azimuth: 244.5°
Direction: West-South-West

Celestial coordinates and finder chart of 43 Ophiuchi

43 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 43 Ophiuchi are provided in the following table:

17h 23m 21s
-28° 08’ 35”

The simplified sky map below shows the position of 43 Ophiuchi in the sky:

Finder chart 43 Ophiuchi star
Simplified finder chart for 43 Ophiuchi.

Visibility of 43 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 43 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: 118.1°
Max altitude: 10.4°
Azimuth: 241.9°

Digitized Sky Survey image of 43 Ophiuchi

The image below is a photograph of 43 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 43 Ophiuchi is 0.004 arcsec per year in Right Ascension and -0.031 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 43 Ophiuchi star
DSS2 image of 43 Ophiuchi. The red arrow shows the motion of 43 Ophiuchi during the next 10000 years (0.67 arcmin in Right Ascension and -5.17 arcmin in declination);

Distance of 43 Ophiuchi from the Sun and relative movement

43 Ophiuchi is distant 599.26 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

183.82 pc
599.26 ly
-14 km/s
0.004 arcsec/year
-0.031 arcsec/year

Spectral properties of 43 Ophiuchi

43 Ophiuchi belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 43 Ophiuchi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 43 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Alternative designations of 43 Ophiuchi

43 Ophiuchi