British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Peter Goodhew FRAS
Image search

NGC 660


Expand image

About this observation
Peter Goodhew
Time of observation
07/10/2018 - 13:05
NGC 660
Observing location
Alcalali, Spain
10 Micron GM2000HPS
QSI6120ws8 camera
R,G,B 12x600s each bin 1x1 L 30x900s each bin 1x1
Like This Image

A very faint galaxy, magnitude 12.

40 million light years from Earth in the constellation of Pisces, NGC 660's peculiar appearance marks it as a polar ring galaxy. A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings strongly tilted from the plane of the galactic disk. The bizarre-looking configuration could have been caused by the chance capture of material from a passing galaxy by a disk galaxy, with the captured debris eventually strung out in a rotating ring. The polar ring component can also be used to explore the shape of the galaxy's otherwise unseen dark matter halo by calculating the dark matter's gravitational influence on the rotation of the ring and disk. Broader than the disk, NGC 660's ring spans over 50,000 light-years.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.