37 Ophiuchi

Above the horizon. Rise: 19:14 | Tran: 2:10 | Set: 9:01

Alt: 48.86° Az: 187.73° Direction: South

37 Ophiuchi is a double giant star of spectral class M2 in the constellation of Ophiuchus.

37 Ophiuchi visual magnitude is 5.33. Because of its faintness, 37 Ophiuchi is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 37 Ophiuchi. The red arrow shows the motion of 37 Ophiuchi during the next 10000 years (0.17 arcmin in Right Ascension and -4.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 13m 39s

Declination +10° 33’ 23”

Hour Angle 00h 20m 38s

Sidereal Time 17h 34m 18s

J2000

Right Ascension 17h 12m 27s

Declination +10° 35’ 07”

Galactic Coordinates

Galactic Longitude 31.38°

Galactic Latitude 26.74°

Finder Chart

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Finder chart for 37 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.33

Class Giant

Absolute magnitude -1.55

Spectral Type M2III

Color Index (B-V) 1.59

Temperature 3663K

The red dot in the diagram below shows where 37 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 37 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Star System Properties

37 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 37 Ophiuchi double sysyem:

Main star magnitude 5.33

Secondary star magnitude 14.03

Magnitude difference 8.7

Separation 30.3 arcsec

Distance, Radial Speed, Proper Motion

37 Ophiuchi is distant 776.19 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

Distance (parsec) 238.10

Distance (light year) 776.19

Radial Speed 26 km/s

Proper Motion RA 0.001 arcsec/y

Proper Motion Dec -0.026"/y

Alternative Designations

Flamsteed designation 37 Ophiuchi

Henry Draper Catalogue HD155644

SAO Catalogue SAO102646

Hipparcos Catalogue HIP84177

Durchmusterung Catalogue BD+10 3165

FK5 Catalogue 3369

Visibility from Your Location

Today's 37 Ophiuchi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 79.4° RISE 19:14

Max altitude: 49.1° TRANSIT 2:10

Azimuth: 280.6° SET 9:01

Set Location

Other stars in Ophiuchus