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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
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Monoceros » 

17 Monocerotis

Altitude: -20.7°   Azimuth: 315.6°   Direction: North-West

17 Monocerotis is a giant star in the constellation of Monoceros.

17 Monocerotis visual magnitude is 4.77. Because of its moderate brightness, 17 Monocerotis 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 17 Monocerotis:


17 Monocerotis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -20.7°
Azimuth: 315.6°
Direction: North-West

Celestial coordinates and finder chart of 17 Monocerotis

17 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 17 Monocerotis are provided in the following table:

06h 47m 19s
+08° 02’ 13”

The simplified sky map below shows the position of 17 Monocerotis in the sky:

Finder chart 17 Monocerotis star
Simplified finder chart for 17 Monocerotis.

Visibility of 17 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 17 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: 82.0°
Max altitude: 46.6°
Azimuth: 278.0°

Digitized Sky Survey image of 17 Monocerotis

The image below is a photograph of 17 Monocerotis 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 17 Monocerotis is -0.026 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 17 Monocerotis star
DSS2 image of 17 Monocerotis. The red arrow shows the motion of 17 Monocerotis during the next 10000 years (-4.33 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of 17 Monocerotis from the Sun and relative movement

17 Monocerotis is distant 484.40 light years from the Sun and it is moving far from the Sun at the speed of 47 kilometers per second.

148.59 pc
484.40 ly
47 km/s
-0.026 arcsec/year
-0.013 arcsec/year

Spectral properties of 17 Monocerotis

17 Monocerotis belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 17 Monocerotis is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 17 Monocerotis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 17 Monocerotis

17 Monocerotis