IC 139 - Association of Stars in Triangulum
IC 139 is a Association of Stars in the Triangulum constellation. IC 139 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere.
See also IC 139 rise and set times.
Given its B magnitude of 13.1, IC 139 is visible with the help of a telescope having an aperture of 10 inches (250mm) or more.
Photometric information of IC 139
The following table lists the magnitude of IC 139 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.
Digitized Sky Survey image of IC 139
The image below is a photograph of IC 139 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).
Celestial coordinates and finder chart of IC 139
Celestial coordinates for the J2000 equinox of IC 139 are provided in the following table:
The simplified sky charts below show the position of IC 139 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.
Rise ans set times of IC 139 from your location
Today's IC 139 - Association of Stars in Triangulum rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):