NGC 664
galaxy
NGC 664 is a spiral galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 5137 ± 21 km/s, which corresponds to a Hubble distance of 247.1 ± 17.3 Mly (75.77 ± 5.31 Mpc). In addition, six non redshift measurements give a closer distance of 218.91 ± 3.66 Mly (67.117 ± 1.123 Mpc). It was discovered by British astronomer John Herschel on 24 September 1830.
Supernovae
Three supernovae have been observed in NGC 664:
SN 1996bw (Type II, mag. 17.5) was discovered by the BAO Supernova Survey on 30 November 1996.
SN 1997W (Type II, mag. 18) was discovered by the Harvard–Smithsonian Center for Astrophysics on 1 February 1997.
SN 1999eb (Type IIn, mag. 16.2) was discovered by the Lick Observatory Supernova Search (LOSS) on 2 October 1999.
“NGC 664” enters the record as galaxy. Crown Archives preserves that source wording while asking what galaxy can confirm, complicate or overturn.
Why this record matters
“NGC 664” is worth following because a concise public description often conceals a longer documentary argument. Here, galaxy provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 3, 2026. The linked authority identifier is Q1038064. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1830, 1996, 1997 and 1999.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “NGC 664”, its source revision and the description used here.
- Expand the search: follow NGC 664 primary sources, NGC 664 archive and galaxy research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “NGC 664”?
- Which institution is responsible for the underlying evidence?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “NGC 664” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.