41 Ophiuchi

41 Ophiuchi is a double giant star in the constellation of Ophiuchus.

41 Ophiuchi visual magnitude is 4.73. Because of its moderate brightness, 41 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 41 Ophiuchi:

Color of 41 Ophiuchi ⬤

Magnitude of 41 Ophiuchi 4.73

Class Giant

VISIBILITY RIGHT NOW 41 Ophiuchi is above the horizon from Greenwich, United Kingdom [change]. Altitude: 35°.

Celestial coordinates and finder chart of 41 Ophiuchi

41 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 41 Ophiuchi are provided in the following table:

Right Ascension J2000 17h 16m 36s

Declination J2000 -00° 26’ 43”

Galactic Longitude 21.2°

Galactic Latitude 20.75°

Constellation Ophiuchus

The simplified sky map below shows the position of 41 Ophiuchi in the sky:

Simplified finder chart for 41 Ophiuchi.

Visibility of 41 Ophiuchi from your location

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

Today's 41 Ophiuchi rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 90.4° RISE 23:15

Max altitude: 38.1° TRANSIT 5:14

Azimuth: 269.6° SET 11:10

RIGHT NOW 41 Ophiuchi is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 41 Ophiuchi

The image below is a photograph of 41 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 41 Ophiuchi is -0.023 arcsec per year in Right Ascension and -0.066 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 41 Ophiuchi. The red arrow shows the motion of 41 Ophiuchi during the next 10000 years (-3.83 arcmin in Right Ascension and -11.00 arcmin in declination);

Distance of 41 Ophiuchi from the Sun and relative movement

41 Ophiuchi is distant 217.77 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

Distance (parsec) 66.80 pc

Distance (light year) 217.77 ly

Heliocentric radial velocity -2 km/s

Proper Motion RA -0.023 arcsec/year

Proper Motion Dec -0.066 arcsec/year

Spectral properties of 41 Ophiuchi

41 Ophiuchi belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.61

Spectral Type K2III

Color Index (B-V) 1.14

Temperature of 41 Ophiuchi 4430K

The red dot in the diagram below shows where 41 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 41 Ophiuchi. Attribution: Richard Powell / CC BY-SA

41 Ophiuchi star system properties

41 Ophiuchi is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 41 Ophiuchi double sysyem:

Main star magnitude 4.73

Secondary star magnitude 7.73

Magnitude difference 3

Separation 1 arcsec

Alternative designations of 41 Ophiuchi

Flamsteed designation 41 Ophiuchi

Henry Draper Catalogue HD156266

SAO Catalogue SAO141586

Hipparcos Catalogue HIP84514

Durchmusterung Catalogue BD-00 3255

Aitken Double Star Catalogue ADS10429

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Other stars in Ophiuchus