41 Ophiuchi

Above the horizon. Rise: 12:57 | Tran: 18:52 | Set: 0:48

Alt: 1.76° Az: 92.97° Direction: East

41 Ophiuchi is a double giant star of spectral class K2 in the constellation of Ophiuchus.

41 Ophiuchi visual magnitude is 4.73. Because of its moderate brightness, 41 Ophiuchi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

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);

Celestial Coordinates

Apparent

Right Ascension 17h 17m 52s

Declination -00° 28’ 14”

Hour Angle 18h 13m 40s

Sideral Time 11h 31m 33s

J2000

Right Ascension 17h 16m 36s

Declination -00° 26’ 43”

Galactic Coordinates

Galactic Longitude 21.2°

Galactic Latitude 20.75°

Finder Chart

Simplified finder chart for 41 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.73

Class Giant

Absolute magnitude 0.61

Spectral Type K2III

Color Index (B-V) 1.14

Temperature 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

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

Distance, Radial Speed, Proper Motion

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

Distance (light year) 217.77

Radial Speed -2 km/s

Proper Motion RA -0.023 arcsec/y

Proper Motion Dec -0.066"/y

Alternative Designations

Flamsteed designation 41 Ophiuchi

Henry Draper Catalogue HD156266

SAO Catalogue SAO141586

Hipparcos Catalogue HIP84514

Durchmusterung Catalogue BD-00 3255

Aitken Double Star Catalogue ADS10429

Visibility from Your Location

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

Azimuth: 90.5° RISE 12:57

Max altitude: 38.0° TRANSIT 18:52

Azimuth: 269.5° SET 0:48

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Ophiuchus