Shortest Orbits of Exoplanets Discovered in 2025
Key Findings
🏆
ZTF J1828+2308 b records the lowest in Orbital period (hours) at 2.69 in 2025.
📊
Average Orbital period (hours) in 2025: 25.83 · median: 30.52.
About This Dataset
Shortest Orbits of Exoplanets Discovered in 2025
What this chart shows
The 15 exoplanets discovered in 2025 with the shortest orbital periods, meaning the least time to complete one orbit of their star. Periods are shown in hours, converted from the archive's values in days, and the shortest is ranked first.
How the data is collected
The Orbital Period values come from the NASA Exoplanet Archive's composite table. Of the 245 planets with a 2025 discovery year, 217 have an orbital period listed. For every planet in this chart the period is taken from a published paper, and none is a value calculated by the archive.
Background
The archive describes its composite table as a more filled-in version of its per-reference table, and as more complete though not necessarily self-consistent. The planets in this chart were found by the Zwicky Transient Facility, TESS, SuperWASP and the Calar Alto Observatory, according to the archive's discovery facility field.
Limits
The 28 planets from 2025 with no listed period, 21 found by microlensing and 7 by imaging, cannot appear in this ranking. A short period says nothing on its own about temperature or size. Periods are rounded here to two decimal places in hours, while the source gives them to several more decimal places in days.
The 15 exoplanets discovered in 2025 with the shortest orbital periods, meaning the least time to complete one orbit of their star. Periods are shown in hours, converted from the archive's values in days, and the shortest is ranked first.
How the data is collected
The Orbital Period values come from the NASA Exoplanet Archive's composite table. Of the 245 planets with a 2025 discovery year, 217 have an orbital period listed. For every planet in this chart the period is taken from a published paper, and none is a value calculated by the archive.
Background
The archive describes its composite table as a more filled-in version of its per-reference table, and as more complete though not necessarily self-consistent. The planets in this chart were found by the Zwicky Transient Facility, TESS, SuperWASP and the Calar Alto Observatory, according to the archive's discovery facility field.
Limits
The 28 planets from 2025 with no listed period, 21 found by microlensing and 7 by imaging, cannot appear in this ranking. A short period says nothing on its own about temperature or size. Periods are rounded here to two decimal places in hours, while the source gives them to several more decimal places in days.
Analysis
ZTF J1828+2308 b has the shortest orbit of any planet discovered in 2025, circling its star in 2.69 hours. ZTF J1230-2655 b is second at 5.66 hours, and both came from the Zwicky Transient Facility. TOI-6324 b completes an orbit in 6.70 hours. Five of the 2025 discoveries orbit in less than a day, and the fifth, TOI-5736 b, takes 15.58 hours. Eleven of the 15 were found by TESS. G 268-110 b, at 34.38 hours, is the only radial velocity planet in the list.
Data Insights
Numbers, trends & sources behind this chart
Methodology & source
- Data source
- NASA Exoplanet Archive (Planetary Systems Composite Parameters table)
- Coverage
- 15 entities · 2025 · 15 observations
- Measure
- Orbital period (hours)
- Last updated
- 16 September 2026
- Compiled by
- The ANYSTAT team, from the source above
How the figures are calculated
- Values use the measure and unit named on this page. Consult the dataset description and cited source for coverage, definitions and any unit conversions. Displayed values may be rounded for readability.
- Entities are ranked lowest-first, because on this measure a lower number is the better result.
An article using this data
NASA Lists 245 Exoplanets Discovered in 2025. The Nearest Is 4.2 Light-Years Away.
The NASA Exoplanet Archive credits 245 confirmed planets to 2025. TESS found 129 of them, Proxima Centauri d is the closest at 4.2 light-years, and one planet o...
Data Sources & References
All external sources cited in this dataset
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