HIP 41378
star in the constellation Cancer
HIP 41378 is a star located 346 light-years away in the constellation of Cancer. The star has an apparent magnitude of 8.92. This F-type main sequence dwarf has a mass of 1.245 M☉ and a radius of 1.299 R☉. It has a surface temperature of about 6,371 K.
Planetary system
In 2016, the K2 Kepler mission discovered five planets around HIP 41378, with sizes ranging from 2 times the size of Earth to the size of Jupiter, out to about 1 AU for the outermost planet. The semi-major axes were not known until K2 Haute-Provence Observatory radial velocity data was obtained in 2019. Also, a sixth non-transiting planet, HIP 41378 g, was discovered, along with speculation that additional planets may exist between HIP 41378 g and HIP 41378 d. The planet HIP 41378 f was also found to likely have optically-thick rings or a highly extended atmosphere. In 2026, radial velocity evidence for a seventh planet, named HIP 41378 h, with an orbital period of 2,600 days was found. However, it remains uncertain if the variations are caused by a planet or a magnetic cycle.
The stellar rotation of HIP 41378 appears to be misaligned relative to the orbit of HIP 41378 f, and thus likely the other planets' orbits as well.
Begin with the source’s own compact description: “HIP 41378” is star in the constellation Cancer. The dossier treats that line as a proposition to test through star, constellation and Cancer, not as a finished interpretation.
Why this record matters
The phrase “star in the constellation Cancer” 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.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q25390546. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2016, 2019 and 2026.
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.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “HIP 41378”, its source revision and the description used here.
- Expand the search: follow HIP 41378 primary sources, HIP 41378 archive and star research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “HIP 41378”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “HIP 41378” 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.