73 Orionis

Below the horizon. Rise: 8:16 | Tran: 15:19 | Set: 22:21

Alt: -21.85° Az: 28.45° Direction: North-North-East

73 Orionis is a bright giant star of spectral class B9 in the constellation of Orion.

73 Orionis visual magnitude is 5.33. Because of its faintness, 73 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 73 Orionis. The red arrow shows the motion of 73 Orionis during the next 100000 years (-1.67 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 17m 10s

Declination +12° 32’ 27”

Hour Angle 13h 47m 43s

Sidereal Time 20h 04m 54s

J2000

Right Ascension 06h 15m 45s

Declination +12° 33’ 03”

Galactic Coordinates

Galactic Longitude 197.71°

Galactic Latitude -2.04°

Finder Chart

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Finder chart for 73 Orionis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.33

Class Bright giant

Absolute magnitude -2.83

Spectral Type B9II

Color Index (B-V) -0.02

Temperature 10382K

The red dot in the diagram below shows where 73 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 73 Orionis. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

73 Orionis is distant 1,399.14 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

Distance (parsec) 429.18

Distance (light year) 1,399.14

Radial Speed 13 km/s

Proper Motion RA -0.001 arcsec/y

Proper Motion Dec 0.001"/y

Alternative Designations

Flamsteed designation 73 Orionis

Henry Draper Catalogue HD43247

SAO Catalogue SAO95457

Hipparcos Catalogue HIP29736

Durchmusterung Catalogue BD+12 1081

Visibility from Your Location

Today's 73 Orionis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 77.5° RISE 8:16

Max altitude: 51.1° TRANSIT 15:19

Azimuth: 282.5° SET 22:21

Set Location

Other stars in Orion