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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:52  
clear_day Transit: 12:11  
SunsetSet: 17:31
sleep NighttimeWhat's Visible Now?
All Constellations » Monoceros » 

β Monocerotis (beta Monocerotis)

Altitude: -17.7°   Azimuth: 281.2°   Direction: West

β Monocerotis is a variable and multiple star in the constellation of Monoceros.

β Monocerotis visual magnitude is 5.6. Because of its reltive faintness, β Monocerotis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of β Monocerotis is -0.016 arcsec per year in Right Ascension and 0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of β Monocerotis (beta Monocerotis) star
DSS2 image of β Monocerotis. The red arrow shows the motion of β Monocerotis during the next 10000 years (-2.67 arcmin in Right Ascension and 0.83 arcmin in declination);

Key facts about β Monocerotis


β Monocerotis (beta Monocerotis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.7°
Azimuth: 281.2°
Direction: West

Celestial coordinates and finder chart of β Monocerotis

β Monocerotis 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 β Monocerotis are provided in the following table:

06h 28m 49s
-07° 02’ 03”

The simplified sky map below shows the position of β Monocerotis in the sky:

Finder chart β Monocerotis (beta Monocerotis) star
Simplified finder chart for β Monocerotis (beta Monocerotis).

Visibility of β Monocerotis 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 β Monocerotis (beta Monocerotis) 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: 97.0°
Max altitude: 31.5°
Azimuth: 263.0°

Spectral properties of β Monocerotis

β Monocerotis belongs to spectral class B3


β Monocerotis star system properties

β Monocerotis 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 β Monocerotis double sysyem:

7.1 arcsec

Alternative designations of β Monocerotis

β Monocerotis
(beta Monocerotis)
11 Monocerotis