NGC 6902A - Barred Spiral Galaxy in Sagittarius
NGC 6902A is a Barred Spiral Galaxy in the Sagittarius constellation. NGC 6902A is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere.
See also NGC 6902A rise and set times.
Given its B magnitude of 14.42, NGC 6902A is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.
Photometric information of NGC 6902A
The following table lists the magnitude of NGC 6902A 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.
The surface brightess reported below is an indication of the brightness per unit of angular area of NGC 6902A.
Apparent size of NGC 6902AThe following table reports NGC 6902A apparent angular size. The green area displayed on top of the DSS2 image of NGC 6902A is a visual representation of it.
Digitized Sky Survey image of NGC 6902A
The image below is a photograph of NGC 6902A 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).
NGC 6902A - Barred Spiral Galaxy in Sagittarius morphological classification
NGC 6902A - Barred Spiral Galaxy in Sagittarius is classified as Barred Spiral (Bm) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 6902A - Barred Spiral Galaxy in Sagittarius in the Hubble de Vaucouleurs sequence.
Celestial coordinates and finder chart of NGC 6902A
Celestial coordinates for the J2000 equinox of NGC 6902A are provided in the following table:
The simplified sky charts below show the position of NGC 6902A in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.