16 Ophiuchi

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

16 Ophiuchi visual magnitude is 6.03. Because of its reltive faintness, 16 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 16 Ophiuchi:

Color of 16 Ophiuchi ⬤

Magnitude of 16 Ophiuchi 6.03

Class Giant

VISIBILITY RIGHT NOW 16 Ophiuchi is above the horizon from Greenwich, United Kingdom [change]. Altitude: 0°.

Celestial coordinates and finder chart of 16 Ophiuchi

16 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 16 Ophiuchi are provided in the following table:

Right Ascension J2000 16h 45m 29s

Declination J2000 +01° 01’ 13”

Galactic Longitude 18.32°

Galactic Latitude 28.22°

Constellation Ophiuchus

The simplified sky map below shows the position of 16 Ophiuchi in the sky:

Simplified finder chart for 16 Ophiuchi.

Visibility of 16 Ophiuchi from your location

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

Today's 16 Ophiuchi rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.0° RISE 23:05

Max altitude: 39.5° TRANSIT 5:12

Azimuth: 271.0° SET 11:15

RIGHT NOW 16 Ophiuchi is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 16 Ophiuchi

The image below is a photograph of 16 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 16 Ophiuchi is 0.002 arcsec per year in Right Ascension and 0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 16 Ophiuchi. The red arrow shows the motion of 16 Ophiuchi during the next 10000 years (0.33 arcmin in Right Ascension and 2.17 arcmin in declination);

Distance of 16 Ophiuchi from the Sun and relative movement

16 Ophiuchi is distant 476.61 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 146.20 pc

Distance (light year) 476.61 ly

Heliocentric radial velocity -13 km/s

Proper Motion RA 0.002 arcsec/year

Proper Motion Dec 0.013 arcsec/year

Spectral properties of 16 Ophiuchi

16 Ophiuchi belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.21

Spectral Type B9III

Color Index (B-V) -0.02

Temperature of 16 Ophiuchi 10382K

The red dot in the diagram below shows where 16 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 16 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Alternative designations of 16 Ophiuchi

Flamsteed designation 16 Ophiuchi

Henry Draper Catalogue HD151133

SAO Catalogue SAO121834

Hipparcos Catalogue HIP82037

Durchmusterung Catalogue BD+01 3298

How to support us

In Evidence

Other stars in Ophiuchus