Mayor & Queloz: a planet around a Sun-like star

What changed

Inferred a close-orbiting planetary companion to 51 Pegasi from periodic changes in the star’s radial velocity.

Scientific scope

Inferred a close-orbiting planetary companion to 51 Pegasi from periodic changes in the star’s radial velocity. Scope limitation: The scope is a planet around a solar-type star, not the first planet detected around any kind of star. Observations used ELODIE in France.

Evidence

Assessment uses the catalogue-linked source evidence for the stated contribution. The scope is a planet around a solar-type star, not the first planet detected around any kind of star. Observations used ELODIE in France.

Contributors

• Michel Mayor · SCIENCE: Named source contributor; exact labor shares are not measured.
• Didier Queloz · SCIENCE: Named source contributor; exact labor shares are not measured.

• A Jupiter-mass companion to a solar-type star
• A Jupiter-mass companion to a solar-type star — deposited bibliography
• Original 51 Pegasi paper, university-hosted reprint

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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