71 Ophiuchi

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

71 Ophiuchi visual magnitude is 4.64. Because of its moderate brightness, 71 Ophiuchi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 71 Ophiuchi:

Color of 71 Ophiuchi ⬤

Magnitude of 71 Ophiuchi 4.64

Class Giant

VISIBILITY RIGHT NOW 71 Ophiuchi is above the horizon from Greenwich, United Kingdom [change]. Altitude: 1°.

Celestial coordinates and finder chart of 71 Ophiuchi

71 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 71 Ophiuchi are provided in the following table:

Right Ascension J2000 18h 07m 18s

Declination J2000 +08° 44’ 02”

Galactic Longitude 35.82°

Galactic Latitude 13.74°

Constellation Ophiuchus

The simplified sky map below shows the position of 71 Ophiuchi in the sky:

Simplified finder chart for 71 Ophiuchi.

Visibility of 71 Ophiuchi from your location

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

Today's 71 Ophiuchi rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 81.3° RISE 23:47

Max altitude: 47.3° TRANSIT 6:33

Azimuth: 278.7° SET 13:16

RIGHT NOW 71 Ophiuchi is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 71 Ophiuchi

The image below is a photograph of 71 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 71 Ophiuchi is 0.011 arcsec per year in Right Ascension and 0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 71 Ophiuchi. The red arrow shows the motion of 71 Ophiuchi during the next 10000 years (1.83 arcmin in Right Ascension and 5.33 arcmin in declination);

Distance of 71 Ophiuchi from the Sun and relative movement

71 Ophiuchi is distant 237.78 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 72.94 pc

Distance (light year) 237.78 ly

Heliocentric radial velocity -3 km/s

Proper Motion RA 0.011 arcsec/year

Proper Motion Dec 0.032 arcsec/year

Spectral properties of 71 Ophiuchi

71 Ophiuchi belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.33

Spectral Type G8III

Color Index (B-V) 0.96

Temperature of 71 Ophiuchi 4841K

The red dot in the diagram below shows where 71 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 71 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Alternative designations of 71 Ophiuchi

Flamsteed designation 71 Ophiuchi

Henry Draper Catalogue HD165760

SAO Catalogue SAO123140

Hipparcos Catalogue HIP88765

Durchmusterung Catalogue BD+08 3582

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In Evidence

Other stars in Ophiuchus