45 Orionis

Below the horizon. Rise: 8:26 | Tran: 13:59 | Set: 19:33

Alt: -43.09° Az: 8.33° Direction: North

45 Orionis is a multiple hypergiant star of spectral class F0 in the constellation of Orion.

45 Orionis visual magnitude is 5.26. Because of its faintness, 45 Orionis 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 45 Orionis. The red arrow shows the motion of 45 Orionis during the next 10000 years (1.50 arcmin in Right Ascension and 1.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 36m 54s

Declination -04° 50’ 28”

Hour Angle 12h 24m 22s

Sidereal Time 18h 01m 17s

J2000

Right Ascension 05h 35m 39s

Declination -04° 51’ 20”

Galactic Coordinates

Galactic Longitude 208.55°

Galactic Latitude -19.06°

Finder Chart

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Finder chart for 45 Orionis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.26

Class Hypergiant

Absolute magnitude -0.02

Spectral Type F0III

Color Index (B-V) 0.24

Temperature 7866K

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

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

Star System Properties

45 Orionis 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 45 Orionis double sysyem:

Main star magnitude 5.26

Secondary star magnitude 14.26

Magnitude difference 9

Separation 19.1 arcsec

Distance, Radial Speed, Proper Motion

45 Orionis is distant 370.45 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 113.64

Distance (light year) 370.45

Radial Speed -9 km/s

Proper Motion RA 0.009 arcsec/y

Proper Motion Dec 0.011"/y

Alternative Designations

Flamsteed designation 45 Orionis

Henry Draper Catalogue HD37077

SAO Catalogue SAO132336

Hipparcos Catalogue HIP26268

Durchmusterung Catalogue BD-04 1188

Aitken Double Star Catalogue ADS4196

Visibility from Your Location

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

Azimuth: 94.8° RISE 8:26

Max altitude: 33.7° TRANSIT 13:59

Azimuth: 265.2° SET 19:33

Set Location

Other stars in Orion