NGC 7691
Galaxy in the constellation Pegasus
NGC 7691 is an intermediate spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 3,676±26 km/s, which corresponds to a Hubble distance of 176.8 ± 12.4 Mly (54.21 ± 3.81 Mpc). However, four non-redshift measurements give a farther mean distance of 199.44 ± 9.12 Mly (61.150 ± 2.796 Mpc). It was discovered by German-British astronomer William Herschel on 16 October 1784.
01NGC 7711 group
02Supernova
One supernova has been observed in NGC 7691:
- SN 2014az (Type II-P, mag. 16.3) was discovered by Stuart Parker and the Backyard Observatory Supernova Search (BOSS) on 30 April 2014.
Sources and credits
This article is adapted from the Wikipedia article “NGC 7691”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- NGC 7691 SDSS2.jpg by Donald Pelletier, CC0
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