ρ Orionis (rho Orionis)
ρ Orionis is a variable and multiple hypergiant star in the constellation of Orion.
ρ Orionis visual magnitude is 4.46. Because of its moderate brightness, ρ Orionis should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
The proper motion of ρ Orionis is 0.001 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Key facts about ρ Orionis
ρ Orionis (rho Orionis) is above the horizon from Greenwich, United Kingdom .
Altitude: 14.4°
Azimuth: 103.9°
Direction: East-South-East
Celestial coordinates and finder chart of ρ Orionis
ρ 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 ρ Orionis are provided in the following table:
The simplified sky map below shows the position of ρ Orionis in the sky:
Visibility of ρ Orionis from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's ρ Orionis (rho Orionis) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Distance of ρ Orionis from the Sun and relative movement
ρ Orionis is distant 343.52 light years from the Sun and it is moving far from the Sun at the speed of 41 kilometers per second.
Spectral properties of ρ Orionis
ρ Orionis belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where ρ Orionis is situated in the Hertzsprung–Russell diagram.
ρ Orionis star system properties
ρ 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 ρ Orionis double sysyem: