23 Orionis

Below the horizon. Rise: 5:21 | Tran: 11:37 | Set: 17:53

Alt: -25.97° Az: 43.71° Direction: North-East

23 Orionis is a double main-sequence star of spectral class B1 in the constellation of Orion.

23 Orionis visual magnitude is 5. Because of its moderate brightness, 23 Orionis 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 23 Orionis. The red arrow shows the motion of 23 Orionis during the next 100000 years (-6.67 arcmin in Right Ascension and -3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 24m 10s

Declination +03° 34’ 01”

Hour Angle 14h 33m 58s

Sidereal Time 19h 58m 08s

J2000

Right Ascension 05h 22m 50s

Declination +03° 32’ 39”

Galactic Coordinates

Galactic Longitude 199.16°

Galactic Latitude -17.86°

Finder Chart

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Finder chart for 23 Orionis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5

Class Main-sequence

Absolute magnitude -2.35

Spectral Type B1V

Color Index (B-V) -0.15

Temperature 12489K

The red dot in the diagram below shows where 23 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 23 Orionis. Attribution: Richard Powell / CC BY-SA

Star System Properties

23 Orionis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 23 Orionis double sysyem:

Main star magnitude 5

Secondary star magnitude 7.2

Magnitude difference 2.2

Separation 31.9 arcsec

Distance, Radial Speed, Proper Motion

23 Orionis is distant 961.65 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 294.99

Distance (light year) 961.65

Radial Speed 18 km/s

Proper Motion RA -0.004 arcsec/y

Proper Motion Dec -0.002"/y

Alternative Designations

Flamsteed designation 23 Orionis

Henry Draper Catalogue HD35149

SAO Catalogue SAO112697

Hipparcos Catalogue HIP25142

Durchmusterung Catalogue BD+03 871

Aitken Double Star Catalogue ADS3962

Visibility from Your Location

Today's 23 Orionis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 86.4° RISE 5:21

Max altitude: 42.1° TRANSIT 11:37

Azimuth: 273.6° SET 17:53

Set Location

Other stars in Orion