CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

(332446) 2008 AF4

asteroid

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 6, 2026
Entity authorityQ4610383 ↗
Source-derived summary

(332446) 2008 AF4 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, which was listed on the Sentry Risk Table in January 2008 with a Torino Scale rating of 1. The asteroid showed a 1 in 71,000 chance of impact on 9 January 2089. It was briefly downgraded to Torino Scale 0 in February 2008, but still showed a cumulative 1 in 53,000 chance of an impact. In March it was back at Torino Scale 1 with a 1 in 28,000 chance of impact on 9 January 2089. By mid April 2008, it was back to Torino Scale 0. It was removed from the Sentry Risk Table on 19 December 2009.

2183 passage

2008 AF4 may pass as close as 0.002 AU (300,000 km; 190,000 mi) from Earth on 12 January 2183. But the nominal solution shows the asteroid passing 0.009 AU (1,300,000 km; 840,000 mi) from Earth.

Editorial summary

This brief starts where responsible research should: with the source description of “(332446) 2008 AF4” as asteroid. 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—2008, 2089, 2009—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where asteroid can be independently traced.
Editorial analysis

Why this record matters

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

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 Sep 6, 2026. The linked authority identifier is Q4610383. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2008, 2089 and 2009.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. 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 “(332446) 2008 AF4”, its source revision and the description used here.
  2. Expand the search: follow (332446) 2008 AF4 primary sources, (332446) 2008 AF4 archive and asteroid 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 “(332446) 2008 AF4”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “(332446) 2008 AF4” 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.