45 Ophiuchi

Below the horizon. Rise: 23:46 | Tran: 2:44 | Set: 5:39

Alt: -20.33° Az: 112.82° Direction: East-South-East

45 Ophiuchi is a sub-giant star of spectral class F5 in the constellation of Ophiuchus.

45 Ophiuchi visual magnitude is 4.29. Because of its moderate brightness, 45 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 45 Ophiuchi. The red arrow shows the motion of 45 Ophiuchi during the next 1000 years (0.33 arcmin in Right Ascension and -2.32 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 28m 58s

Declination -29° 53’ 11”

Hour Angle 18h 18m 02s

Sidereal Time 11h 47m 01s

J2000

Right Ascension 17h 27m 21s

Declination -29° 52’ 00”

Galactic Coordinates

Galactic Longitude 357.08°

Galactic Latitude 2.85°

Finder Chart

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Finder chart for 45 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.29

Class Sub-giant

Absolute magnitude 1.62

Spectral Type F5IV

Color Index (B-V) 0.4

Temperature 6880K

The red dot in the diagram below shows where 45 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 45 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

45 Ophiuchi is distant 111.41 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

Distance (parsec) 34.18

Distance (light year) 111.41

Radial Speed 37 km/s

Proper Motion RA 0.02 arcsec/y

Proper Motion Dec -0.139"/y

Alternative Designations

Flamsteed designation 45 Ophiuchi

Henry Draper Catalogue HD157919

SAO Catalogue SAO185412

Hipparcos Catalogue HIP85423

Durchmusterung Catalogue CD-2913557

FK5 Catalogue 646

Visibility from Your Location

Today's 45 Ophiuchi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 119.9° RISE 23:46

Max altitude: 8.6° TRANSIT 2:44

Azimuth: 240.1° SET 5:39

In Evidence

Other stars in Ophiuchus

45 Ophiuchi

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Ophiuchus

45 Ophiuchi

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location