WISPIT 2
star in the constellation Aquila
WISPIT 2 (also called TYC 5709-354-1) is a binary star in the constellation Aquila. It is part of the Scorpius-Centaurus OB association, likely belonging to the subgroup Theia 53. The system has a directly imaged circumstellar disk with multiple rings and two directly imaged protoplanets inside the rings' gaps. One of the protoplanets, WISPIT 2b, was also detected in H-alpha, showing that it is actively accreting gas from a surrounding circumplanetary disk. The star is named after the astronomical survey Wide Separation Planets In Time (WISPIT) in the course of which the protoplanetary system was discovered.
The binary nature of WISPIT 2 was discovered in 2026. It is a single-lined spectroscopic binary with an orbital period of 4.8 days a semi-major axis of 0.072 au. The orbit is thought to be circular, with an eccentricity close to zero, and the inclination is assumed to be the same of the outer disk, based on observational evidence. The primary has an estimated mass of 0.97 M☉, while the estimated mass of the secondary is 0.33 M☉.
Circumstellar disk
The disk was classified as transitional, meaning it has an inner cavity.
“WISPIT 2” enters the record as star in the constellation Aquila. Crown Archives preserves that source wording while asking what WISPIT, star and constellation can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 23, 2026. The linked authority identifier is Q93964698. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2026.
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This entry incorporates text from “WISPIT 2” 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.