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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
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Other deep sky objects in Sagittarius
All Constellations »  Sagittarius »  Deep Sky Objects » 

NGC 6902A - Barred Spiral Galaxy in Sagittarius

Altitude: -7.5°   Azimuth: 195.0°   Direction: South-South-West

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.

NGC 6902A
Galaxy
Sagittarius

NGC 6902A is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.5°
Azimuth: 195.0°
Direction: South-South-West

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.

Available Resources for NGC 6902A - Barred Spiral Galaxy in Sagittarius

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).

14.42
11.6
10.89
10.88

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.

23.07 mag/arcsec2

Apparent size of NGC 6902A

The 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.
0.98 arcmin
0.74 arcmin
57°

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).

Image of NGC 6902A - Barred Spiral Galaxy in Sagittarius star
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DSS2 image of NGC 6902A in the Red band. The green region on the image is a representation of the major (0.98 arcmin) and minor (0.74 arcmin) axes of the object's apparent size.

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.

NGC 6902A - Barred Spiral Galaxy in Sagittarius
Visualization of the morphological classification of NGC 6902A - Barred Spiral Galaxy in Sagittarius, Barred Spiral (Bm).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 6902A

Celestial coordinates for the J2000 equinox of NGC 6902A are provided in the following table:

20h 22m 59s
-44° 16’ 18”

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°.

Finder chart NGC 6902A - Barred Spiral Galaxy in Sagittarius star
Simplified finder chart for NGC 6902A - Barred Spiral Galaxy in Sagittarius.

Finder chart NGC 6902A - Barred Spiral Galaxy in Sagittarius star
Simplified finder chart for NGC 6902A - Barred Spiral Galaxy in Sagittarius.

Rise ans set times of NGC 6902A from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

NGC 6902A - Barred Spiral Galaxy in Sagittarius is currently not visible from Greenwich, United Kingdom edit_location_alt