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NGC 4002

spiral galaxy in the constellation Leo

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 3, 2026
Entity authorityQ1108460 ↗
Source-derived summary

NGC 4002 is a lenticular galaxy located 310 million light-years away in the constellation Leo. It was discovered on April 10, 1785, by astronomer William Herschel. NGC 4002 forms a pair with the galaxy NGC 4003 known as [T2015] nest 102886, and is part of the Coma Supercluster.

NGC 4002 is a quasar candidate according to Simbad, and is host to a supermassive black hole with an estimated mass of 9 × 108 M☉.

Editorial summary

The public source identifies “NGC 4002” as spiral galaxy in the constellation Leo. This brief keeps that definition visible, then builds a research path around spiral, galaxy and constellation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1785—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with spiral, galaxy and constellation providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “NGC 4002”, the useful work is to connect “spiral galaxy in the constellation Leo” to the records capable of establishing context and consequence.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 3, 2026. The linked authority identifier is Q1108460. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1785.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “NGC 4002”, its source revision and the description used here.
  2. Expand the search: follow NGC 4002 primary sources, NGC 4002 archive and spiral research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “NGC 4002”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from “NGC 4002” 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.