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C/1913 Y1 (Delavan)

non-periodic comet

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 22, 2026
Entity authorityQ4229540 ↗
Source-derived summary

Comet Delavan, formally designated as C/1913 Y1, is a non-periodic comet discovered by astronomer Pablo T. Delavan on from the La Plata Observatory in Argentina on 18 December 1913.

The comet was last seen on 19 September 1915. It is one of 19 comets used in the original sample by Jan Oort for his hypothesis regarding the origin of long-period comets in 1950.

Editorial summary

This brief starts where responsible research should: with the source description of “C/1913 Y1 (Delavan)” as non-periodic comet. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1913, 1915, 1950—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Delavan, non-periodic and comet can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as non-periodic comet. Its deeper value depends on whether names, dates, institutions and citations support that framing.

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 Jul 22, 2026. The linked authority identifier is Q4229540. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1913, 1915 and 1950.

Critical limits

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.

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 “C/1913 Y1 (Delavan)”, its source revision and the description used here.
  2. Expand the search: follow C/1913 Y1 (Delavan) primary sources, C/1913 Y1 (Delavan) archive and Delavan 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 “C/1913 Y1 (Delavan)”?
  2. Which cited source is closest to the event, object or claim?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from “C/1913 Y1 (Delavan)” 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.