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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
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Other deep sky objects in Sagittarius
All Constellations »  Sagittarius »  Deep Sky Objects » 

Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius

Altitude: -27.5°   Azimuth: 278.7°   Direction: West

Messier 17 is a Nebula in the Sagittarius constellation. Messier 17 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.

Messier 17
Nebula
Sagittarius

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

Altitude: -27.5°
Azimuth: 278.7°
Direction: West

See also Messier 17 rise and set times.

Given its visual magnitude of 7, Messier 17 is visible with the help of a small binocular.

Available Resources for Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius

Photometric information of Messier 17

The following table lists the magnitude of Messier 17 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).

6
7

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

Apparent size of Messier 17

The following table reports Messier 17 apparent angular size. The green area displayed on top of the DSS2 image of Messier 17 is a visual representation of it.
12.6 arcmin
12.6 arcmin

Digitized Sky Survey image of Messier 17

The image below is a photograph of Messier 17 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 0.42x0.42 degrees (25.2x25.2 arcmins).

Image of Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius star
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DSS2 image of Messier 17 in the Red band. The green region on the image is a representation of the major (12.6 arcmin) and minor (12.6 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of Messier 17

Celestial coordinates for the J2000 equinox of Messier 17 are provided in the following table:

18h 20m 47s
-16° 10’ 18”

The simplified sky charts below show the position of Messier 17 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Finder chart Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius star
Simplified finder chart for Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius.

Finder chart Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius star
Simplified finder chart for Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius.

Rise ans set times of Messier 17 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 Messier 17 (Horseshoe Nebula) - Nebula in Sagittarius 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: 106.2°
Max altitude: 22.3°
Azimuth: 253.8°