Table · dataset · 2026
TOI-1243, TOI-4529, TOI-5388 RV datasets
Listed in IVOA Registry (Virtual Observatory)
We report the confirmation of three transiting exoplanets orbiting TOI-1243 (LSPM J0902+7138), TOI-4529 (G 2-21) and TOI-5388 (Wolf 346) initially detected by TESS, through ground-based photometry and radial-velocity follow-up measurements with CARMENES.
Description
The planets present short orbital periods of 4.65, 5.88, and 2.59 days, and they orbit early M dwarfs (M2.0 V, M1.5 V, and M3.0 V, respectively). We were able to precisely determine the radius of all three planets with a <7% precision, the mass of TOI-1243b with 19% precision and upper mass limits for TOI-4529b and TOI-5388b.
TOI-1243b has a radius of 2.33+/-0.12R_{Earth}_, a mass of 7.7+/-1.5M_{Earth}_, and a mean density of 0.61+/-0.15{rho}_{Earth}_. TOI-4529b has a radius of 1.77^+0.09^_-0.08_R_{Earth}_, a 3{sigma} upper mass limit of 4.9 M_{Earth} and a 3{sigma} upper density limit of 0.88{rho}_{Earth}_. The third planet, TOI-5388b, is Earth-sized with a radius of 0.99^+0.07^_-0.06_R_{Earth}_, a 3{sigma} upper mass limit of 2.2M_{Earth}_ and a 3{sigma} upper density limit of 2.2{rho}_{Earth}_.
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While TOI-5388 b is most probably rocky, given its Earth-like radius, TOI-1243 b and TOI-4529 b are located in a highly degenerate region in the mass-radius space. TOI-4529 b appears to lean towards a water-world composition. TOI-1243 b has enough mass to host a significant H-He envelope, although a water-world and pure rocky compositions are also consistent with the data.
Our analysis indicates that future atmospheric observations using JWST can aid into determining their real composition. The sample of small planets around M-dwards is widely used to understand planet formation and composition theories, and our study adds 3 more planets to this sample.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A106 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2026A&A...707A.106P ui.adsabs.harvard.edu/abs/2026A%26A...707A.106P ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/707/a106 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 70%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/707/a106 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |