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C/2021 J1 (Maury–Attard)

comet

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 30, 2026
Entity authorityQ107649961 ↗
Source-derived summary

C/2021 J1 (Maury–Attard) is a Halley-type comet discovered on 9 May 2021, by French amateur astronomers Alain Maury and Georges Attard with the MAP (Maury/Attard/Parrott) observation program. It is the first comet discovered with the synthetic tracking technique, made possible with the Tycho Tracker commercial software developed by Daniel Parrott. When it was discovered, it had a magnitude of 19.

It has a 124-day observation arc. It came to perihelion on 19 February 2021. The next perihelion will be in early 2154.

Editorial summary

“C/2021 J1 (Maury–Attard)” enters the record as comet. Crown Archives preserves that source wording while asking what Maury, Attard and comet can confirm, complicate or overturn.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2021—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Maury, Attard and comet.
Editorial analysis

Why this record matters

“C/2021 J1 (Maury–Attard)” is worth following because a concise public description often conceals a longer documentary argument. Here, Maury, Attard and comet provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 30, 2026. The linked authority identifier is Q107649961. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2021.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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.

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

Three-step research path

  1. Establish the record: confirm the title “C/2021 J1 (Maury–Attard)”, its source revision and the description used here.
  2. Expand the search: follow C/2021 J1 (Maury–Attard) primary sources, C/2021 J1 (Maury–Attard) archive and Maury 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

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  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from “C/2021 J1 (Maury–Attard)” 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.