NGC 643C - Spiral Galaxy in Hydrus
NGC 643C is a Spiral Galaxy in the Hydrus constellation. NGC 643C is situated close to the southern celestial pole and, as such, it is easilty visible for most part of the year from the southern hemisphere.
The image below is a photograph of NGC 643C 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).
Key facts about NGC 643C
NGC 643C is below the horizon from Greenwich, United Kingdom.
Altitude: -41.2°
Azimuth: 164.5°
Direction: South-South-East
See also NGC 643C rise and set times.
Given its B magnitude of 15.7, NGC 643C is visible only through long exposure photography.
Photometric information of NGC 643C
The following table lists the magnitude of NGC 643C 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 643C.
Apparent size of NGC 643C
The following table reports NGC 643C apparent angular size. The green area displayed on top of the DSS2 image of NGC 643C is a visual representation of it.NGC 643C - Spiral Galaxy in Hydrus morphological classification
NGC 643C - Spiral Galaxy in Hydrus is classified as Spiral (SAc) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 643C - Spiral Galaxy in Hydrus in the Hubble de Vaucouleurs sequence.
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY
Celestial coordinates and finder chart of NGC 643C
Celestial coordinates for the J2000 equinox of NGC 643C are provided in the following table:
The simplified sky charts below show the position of NGC 643C 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 and set times of NGC 643C from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
NGC 643C - Spiral Galaxy in Hydrus is currently not visible from Greenwich, United Kingdom