NGC 3632
spiral galaxy in the constellation Leo

NGC 3632 (also known as Caldwell 40) and NGC 3626 is an unbarred lenticular galaxy and Caldwell object in the constellation Leo. It was discovered by William Herschel, on 14 March 1784. It shines at magnitude +10.6/+10.9. Its celestial coordinates are RA 11h 20.1m , dec +18° 21′. It is located near the naked-eye-class A4 star Zosma, as well as galaxies NGC 3608, NGC 3607, NGC 3659, NGC 3686, NGC 3684, NGC 3691, NGC 3681, and NGC 3655. Its dimensions are 2′.7 × 1′.9. The galaxy belongs to the NGC 3607 group some 70 million light-years distant, itself one of the many Leo II groups.
Notes
References
Bratton, Mark (2011). The Complete Guide to the Herschel Objects. Cambridge University Press.
“NGC 3632” enters the record as spiral galaxy in the constellation Leo. Crown Archives preserves that source wording while asking what spiral, galaxy and constellation can confirm, complicate or overturn.
Why this record matters
“NGC 3632” is worth following because a concise public description often conceals a longer documentary argument. Here, spiral, galaxy and constellation provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 3, 2026. The linked authority identifier is Q3392676. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1784 and 2011.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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 3632”, its source revision and the description used here.
- Expand the search: follow NGC 3632 primary sources, NGC 3632 archive and spiral 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 3632”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “NGC 3632” 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.