11 Orionis

Altitude: 24.4° Azimuth: 95.8° Direction: East

11 Orionis is a variable hypergiant star in the constellation of Orion.

11 Orionis visual magnitude is 4.68. Because of its moderate brightness, 11 Orionis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 11 Orionis:

Color of 11 Orionis ⬤

Magnitude of 11 Orionis 4.68

Class Hypergiant

VISIBILITY RIGHT NOW

11 Orionis is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 24.4°
Azimuth: 95.8°
Direction: East

Celestial coordinates and finder chart of 11 Orionis

11 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 11 Orionis are provided in the following table:

Right Ascension J2000 05h 04m 34s

Declination J2000 +15° 24’ 15”

Galactic Longitude 186.18°

Galactic Latitude -15.35°

Constellation Orion

The simplified sky map below shows the position of 11 Orionis in the sky:

Simplified finder chart for 11 Orionis.

Visibility of 11 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 11 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: 74.6° RISE 16:32

Max altitude: 53.9° TRANSIT 23:50

Azimuth: 285.4° SET 7:13

Digitized Sky Survey image of 11 Orionis

The image below is a photograph of 11 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 11 Orionis is 0.016 arcsec per year in Right Ascension and -0.034 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 11 Orionis. The red arrow shows the motion of 11 Orionis during the next 10000 years (2.67 arcmin in Right Ascension and -5.67 arcmin in declination);

Distance of 11 Orionis from the Sun and relative movement

11 Orionis is distant 400.00 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

Distance (parsec) 122.70 pc

Distance (light year) 400.00 ly

Heliocentric radial velocity 17 km/s

Proper Motion RA 0.016 arcsec/year

Proper Motion Dec -0.034 arcsec/year

Spectral properties of 11 Orionis

11 Orionis belongs to spectral class A0 11 Orionis is also a Si chemically peculiar star.

Absolute magnitude -0.76

Spectral Type A0

Color Index (B-V) -0.06

Temperature of 11 Orionis 10941K

The red dot in the diagram below shows where 11 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 11 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 11 Orionis

Flamsteed designation 11 Orionis

Henry Draper Catalogue HD32549

SAO Catalogue SAO94290

Hipparcos Catalogue HIP23607

Durchmusterung Catalogue BD+15 732

FK5 Catalogue 1140

General Catalogue of Variable Stars V1032 Ori

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