74 Ophiuchi

Below the horizon. Rise: 21:34 | Tran: 3:53 | Set: 10:08

Alt: -16.47° Az: 61.94° Direction: East-North-East

74 Ophiuchi is a multiple giant star of spectral class G8 in the constellation of Ophiuchus.

74 Ophiuchi visual magnitude is 4.86. Because of its moderate brightness, 74 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 74 Ophiuchi. The red arrow shows the motion of 74 Ophiuchi during the next 10000 years (0.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 22m 08s

Declination +03° 23’ 25”

Hour Angle 15h 51m 53s

Sidereal Time 10h 14m 01s

J2000

Right Ascension 18h 20m 52s

Declination +03° 22’ 37”

Galactic Coordinates

Galactic Longitude 32.46°

Galactic Latitude 8.34°

Finder Chart

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Finder chart for 74 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.86

Class Giant

Absolute magnitude 0.28

Spectral Type G8III

Color Index (B-V) 0.91

Temperature 4970K

The red dot in the diagram below shows where 74 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 74 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Star System Properties

74 Ophiuchi is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 74 Ophiuchi double sysyem:

Main star magnitude 4.86

Secondary star magnitude 12.16

Magnitude difference 7.3

Separation 28.1 arcsec

Distance, Radial Speed, Proper Motion

74 Ophiuchi is distant 269.20 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

Distance (parsec) 82.58

Distance (light year) 269.20

Radial Speed 5 km/s

Proper Motion Dec 0.01"/y

Alternative Designations

Flamsteed designation 74 Ophiuchi

Henry Draper Catalogue HD168656

SAO Catalogue SAO123377

Hipparcos Catalogue HIP89918

Durchmusterung Catalogue BD+03 3680

FK5 Catalogue 1476

Aitken Double Star Catalogue ADS11271

Visibility from Your Location

Today's 74 Ophiuchi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 86.6° RISE 21:34

Max altitude: 41.9° TRANSIT 3:53

Azimuth: 273.4° SET 10:08

Set Location

Other stars in Ophiuchus