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Kepler-440b

extrasolar planet

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 4, 2026
Entity authorityQ18819063 ↗
Source-derived summary

Kepler-440b (also known by its Kepler Object of Interest designation KOI-4087.01) is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-440, about 850 light-years (261 pc) from Earth. The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.

Confirmed exoplanet

Kepler-440b is a

[super-Earth] with a radius 1.86 times that of Earth. The planet orbits Kepler-440 once every 101.1 days.

Habitability

The planet was announced as being located within the habitable zone of Kepler-440, a region where liquid water could exist on the surface of the planet.

See also

Habitability of K-type main-sequence star systems

List of potentially habitable exoplanets

References

External links

NASA – Mission overview.

NASA – Kepler Discoveries – Summary Table.

NASA – Kepler-440b at The NASA Exoplanet Archive.

NASA – Kepler-440b at The Extrasolar Planets Encyclopaedia.

Editorial summary

Begin with the source’s own compact description: “Kepler-440b” is extrasolar planet. The dossier treats that line as a proposition to test through Kepler-440b, extrasolar and planet, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2015—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Kepler-440b, extrasolar and planet is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “extrasolar planet” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

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 May 4, 2026. The linked authority identifier is Q18819063. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2015.

Critical limits

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.

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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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Source & attribution

This entry incorporates text from “Kepler-440b” 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.