NASA catalog lists KMT-2025-BLG-0975L b as a Neptune-like exoplanet
NASA’s catalog lists KMT-2025-BLG-0975L b as a Neptune-like exoplanet detected through microlensing, with a recorded mass of 29.8 Earth masses and a 2.3-year orbit. The entry leaves key research details, including the discovery paper and measurement uncertainties, unspecified.
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NASA’s Exoplanet Catalog currently records KMT-2025-BLG-0975L b as a Neptune-like planet found through microlensing. The entry lists a mass of 29.8 Earth masses, an orbital radius of 0.81 AU and an orbital period of 2.3 years. [1]
01
What we know now
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[1] NASA Science, “KMT-2025-BLG-0975L b,” Exoplanet Catalog: https://science.nasa.gov/exoplanet-catalog/kmt-2025-blg-0975l-b
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[1] Complete primary evidence retrieved 2026-09-05; the page lists the planet type, microlensing discovery method, 2026 discovery date, mass, radius, orbital radius and orbital period.
02
Planet classification recorded by NASA
NASA lists KMT-2025-BLG-0975L b as Neptune-like.Discovery method
The catalog identifies microlensing as the discovery method.Mass listed in the catalog
NASA records a mass of 29.8 Earth masses.Orbital period listed
NASA records an orbital period of 2.3 years.Values are those currently shown in NASA’s catalog entry; the supplied record does not include measurement uncertainties.
03
What NASA records
NASA’s catalog says KMT-2025-BLG-0975L b orbits an unknown-type star and that its discovery was announced in 2026. The catalog is the primary source for these currently displayed details, but the supplied entry does not include the underlying scientific paper. [1]
- Planet type: Neptune-like.
- Discovery method: microlensing.
- Discovery date recorded: 2026.
- Host-star description: unknown-type star.
04
Listed physical and orbital details
The catalog records the planet’s mass, orbital radius and period as 29.8 Earth masses, 0.81 AU and 2.3 years, respectively. It separately gives a radius of 0.532 times Jupiter’s radius and explicitly labels that figure an estimate. The available page does not state uncertainty ranges for these values. [1]
- Mass: 29.8 Earth masses.
- Orbital radius: 0.81 AU.
- Orbital period: 2.3 years.
- Planet radius: 0.532 Jupiter radii, marked as an estimate.
05
What the record does and does not establish
NASA identifies microlensing as the discovery method. Beyond the basic catalog fields, the supplied material does not establish who made the detection, which facilities contributed, how precise the measurements are, or whether there is independent corroboration. Those questions require a linked research publication or further documentation, neither of which appears in the supplied record. [1]
- Microlensing is the discovery label in this entry.
- The supplied record does not explain the observing campaign or analysis.
- No broader conclusions about the planetary system are established by this page alone.
06
How to read the entry
Treat the catalog as a current reference record rather than a full discovery report.
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Use the listed mass, orbit and discovery method as catalog values.
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Note that the radius is explicitly marked as an estimate.
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Consult a discovery paper or follow-up record before drawing conclusions about the host star, measurement precision or the system’s broader significance.
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Limits of this edition
The supplied NASA page does not identify the host beyond describing it as an unknown-type star. [1]
NASA labels the listed planet radius, 0.532 times Jupiter’s radius, as an estimate. [1]
The supplied record provides no discovery paper, observing-facility details, researchers, measurement uncertainties or independent confirmation source. [1]
The catalog says discovery was announced in 2026, but the supplied page does not give a more specific announcement or entry-publication date. [1]
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