ζ Orionis (zeta Orionis)

Above the horizon. Rise: 23:12 | Tran: 5:05 | Set: 10:53

Alt: 35.15° Az: 161.97° Direction: South-South-East

ζ Orionis is a variable and multiple hypergiant star of spectral class B0 in the constellation of Orion.

ζ Orionis visual magnitude is 4.21. Because of its moderate brightness, ζ 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 ζ Orionis. The red arrow shows the motion of ζ Orionis during the next 100000 years (6.67 arcmin in Right Ascension and -3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 42m 00s

Declination -01° 55’ 53”

Hour Angle 23h 01m 19s

Sidereal Time 04h 43m 20s

J2000

Right Ascension 05h 40m 45s

Declination -01° 56’ 34”

Galactic Coordinates

Galactic Longitude 206.45°

Galactic Latitude -16.59°

Finder Chart

Simplified finder chart for ζ Orionis (zeta Orionis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.21

Class Hypergiant

Spectral Type B0III

Color Index (B-V)

Temperature 10125K

Star System Properties

ζ Orionis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the ζ Orionis double sysyem:

Main star magnitude 4.21

Secondary star magnitude 6.41

Magnitude difference 2.2

Separation 2.4 arcsec

Alternative Designations

Bayer designation ζ Orionis
(zeta Orionis)

Flamsteed designation 50 Orionis

Henry Draper Catalogue HD37743

Durchmusterung Catalogue BD-02 1338

General Catalogue of Variable Stars 2553

Aitken Double Star Catalogue ADS4263

Visibility from Your Location

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

Azimuth: 91.9° RISE 23:12

Max altitude: 36.6° TRANSIT 5:05

Azimuth: 268.1° SET 10:53

Set Location

Other stars in Orion