NGC 684
Spiral galaxy in the constellation Triangulum
NGC 684 is a spiral galaxy approximately 135 million light-years away from Earth in the constellation of Triangulum. It was discovered by William Herschel on October 26, 1786. Edward Swift, Lewis's son, found this galaxy again on 18 Jan 1890 while "searching for Swift's Comet." and it was reported as a new object in list IX-6.
01NGC 684 Group
02Supernovae
Two supernovae have been observed in NGC 684:
- SN 2021ass (Type II, mag. 18.1122) was discovered by the Zwicky Transient Facility on 18 January 2021.
- SN 2025aml (Type II, mag. 18.1168) was discovered by the Zwicky Transient Facility on 31 January 2025.
Sources and credits
This article is adapted from the Wikipedia article “NGC 684”, 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:
- NGC684 - SDSS DR14.jpg by Sloan Digital Sky Survey, CC BY 4.0
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