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HD 180902 b

extrasolar planet

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionDec 26, 2025
Entity authorityQ2067799 ↗
Source-derived summary

HD 180902 b is an extrasolar planet orbiting the K-type star HD 180902 approximately 342 light years away in the constellation Sagittarius.

Discovery

HD 180902 b, along with other planets, was discovered in 2010 by scientists at the Keck Observatory. These planets were discovered via doppler spectroscopy, which is detecting exoplanets using the star's wobble.

Properties

Orbit

HD 180902 b takes 510 days to orbit its parent star, which is longer than Earth's orbital period, which is 365 days. It orbits at a distance similar to Earth from the sun. HD 180902 orbits with mild eccentricity.

Characteristics

HD 180902 b has a minimum mass of 1.685 times the mass of Jupiter, but since its inclination is not known, the true mass of the planet cannot be detected. According to a theoretical search by the observatory, it may have a radius that is 22.1% larger than Jupiter.

See also

HD 4313 b

HD 181342 b

HD 206610 b

HD 136418 b

HD 212771 b

References

External links

"HD 180902 b". Extrasolar Planets Encyclopaedia.

Editorial summary

This brief starts where responsible research should: with the source description of “HD 180902 b” as extrasolar planet. Everything that follows is an evidence route, not borrowed authority.

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—2010—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where extrasolar and planet can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as extrasolar planet. 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 Dec 26, 2025. The linked authority identifier is Q2067799. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2010.

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.

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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 “HD 180902 b”, its source revision and the description used here.
  2. Expand the search: follow HD 180902 b primary sources, HD 180902 b archive and extrasolar 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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Source & attribution

This entry incorporates text from “HD 180902 b” 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.