δ Orionis (delta Orionis)

Altitude: -26.9° Azimuth: 51.1° Direction: North-East

δ Orionis is a multiple main-sequence star in the constellation of Orion.

δ Orionis visual magnitude is 6.85. Because of its reltive faintness, δ Orionis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about δ Orionis:

Color of δ Orionis ⬤

Magnitude of δ Orionis 6.85

Class Main-sequence

VISIBILITY RIGHT NOW

δ Orionis (delta Orionis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -26.9°
Azimuth: 51.1°
Direction: North-East

Celestial coordinates and finder chart of δ Orionis

δ Orionis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of δ Orionis are provided in the following table:

Right Ascension J2000 05h 32m 00s

Declination J2000 -00° 17’ 03”

Galactic Longitude 203.84°

Galactic Latitude -17.73°

Constellation Orion

The simplified sky map below shows the position of δ Orionis in the sky:

Finder chart δ Orionis (delta Orionis) star

Simplified finder chart for δ Orionis (delta Orionis).

Visibility of δ Orionis from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's δ Orionis (delta Orionis) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 90.3° RISE 0:16

Max altitude: 38.2° TRANSIT 6:16

Azimuth: 269.7° SET 12:13

Digitized Sky Survey image of δ Orionis

The image below is a photograph of δ Orionis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of δ Orionis is 0.009 arcsec per year in Right Ascension and -0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of δ Orionis. The red arrow shows the motion of δ Orionis during the next 100000 years (15.00 arcmin in Right Ascension and -6.67 arcmin in declination);

Spectral properties of δ Orionis

δ Orionis belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.

Spectral Type B2V

Color Index (B-V) -0.16

Temperature of δ Orionis 12692K

δ Orionis star system properties

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

Main star magnitude 6.85

Secondary star magnitude 11.45

Magnitude difference 4.6

Separation 51.7 arcsec

Alternative designations of δ Orionis

Bayer designation δ Orionis
(delta Orionis)

Flamsteed designation 34 Orionis

Henry Draper Catalogue HD36485

SAO Catalogue SAO132221

Durchmusterung Catalogue BD-00 982

Aitken Double Star Catalogue ADS4134

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