We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations »  Sagitta »  Deep Sky Objects » 

H20 - Open Cluster in Sagitta

Altitude: -0.2°   Azimuth: 59.4°   Direction: East-North-East

H20 is a Open Cluster in the Sagitta constellation. H20 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.

The image below is a photograph of H20 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).

Image of H20 - Open Cluster in Sagitta star
DSS2 image of H20 in the Red band. The green region on the image is a representation of the major (5.1 arcmin) and minor (5.1 arcmin) axes of the object's apparent size.

Key facts about H20

Open Cluster

H20 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -0.2°
Azimuth: 59.4°
Direction: East-North-East

See also H20 rise and set times.

Given its visual magnitude of 7.7, H20 is visible with the help of a binocular with a 40-50mm aperture or a small telescope.

Available Resources for H20 - Open Cluster in Sagitta

Photometric information of H20

The following table lists the magnitude of H20 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).


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

Apparent size of H20

The following table reports H20 apparent angular size. The green area displayed on top of the DSS2 image of H20 is a visual representation of it.
5.1 arcmin
5.1 arcmin

Celestial coordinates and finder chart of H20

Celestial coordinates for the J2000 equinox of H20 are provided in the following table:

19h 53m 06s
+18° 19’ 59”

The simplified sky charts below show the position of H20 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 H20 - Open Cluster in Sagitta star
Simplified finder chart for H20 - Open Cluster in Sagitta.

Finder chart H20 - Open Cluster in Sagitta star
Simplified finder chart for H20 - Open Cluster in Sagitta.

Rise and set times of H20 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 H20 - Open Cluster in Sagitta 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: 71.7°
Max altitude: 56.9°
Azimuth: 288.3°