Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2601.16357 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866914274976202752 |
|---|---|
| author | Bieryla, Allyson Collins, Karen A. Zhou, George Latham, David W. Carter, Brad Dalba, Paul Gagliano, Robert Jacobs, Thomas L. Kristiansen, Martti Holst Lacourse, Daryll Omohundro, Mark Schwengeler, H. M. Barkaoui, Khalid Brahm, Rafael Caldwell, Douglas A. Crane, Jeffrey D. Daylan, Tansu Deveny, Sarah Gaibor, Yadira S. Gillon, Michael Henning, Thomas Horne, Keith Butler, R. Paul Eastman, Jason D. Howell, Steve B. Jehin, Emmanuel Jensen, Eric L. N. Jordan, Andres Kunimoto, Michelle Littlefield, Colin Parc, Lena Quinn, Samuel N. Rice, Malena Rodriguez, Joseph E. Schwarz, Richard P. Sefako, Ramotholo Shectman, Stephen A. Shporer, Avi Soubkiou, Abderahmane Srdoc, Gregor Steiner, Michal Pinto, Marcelo Tala Teske, Johanna Trifonov, Trifon Ulmer-Moll, Solene Watkins, Cristilyn N. Wang, Sharon X. Galarza, Jhon Yana Yee, Samuel W. |
| author_facet | Bieryla, Allyson Collins, Karen A. Zhou, George Latham, David W. Carter, Brad Dalba, Paul Gagliano, Robert Jacobs, Thomas L. Kristiansen, Martti Holst Lacourse, Daryll Omohundro, Mark Schwengeler, H. M. Barkaoui, Khalid Brahm, Rafael Caldwell, Douglas A. Crane, Jeffrey D. Daylan, Tansu Deveny, Sarah Gaibor, Yadira S. Gillon, Michael Henning, Thomas Horne, Keith Butler, R. Paul Eastman, Jason D. Howell, Steve B. Jehin, Emmanuel Jensen, Eric L. N. Jordan, Andres Kunimoto, Michelle Littlefield, Colin Parc, Lena Quinn, Samuel N. Rice, Malena Rodriguez, Joseph E. Schwarz, Richard P. Sefako, Ramotholo Shectman, Stephen A. Shporer, Avi Soubkiou, Abderahmane Srdoc, Gregor Steiner, Michal Pinto, Marcelo Tala Teske, Johanna Trifonov, Trifon Ulmer-Moll, Solene Watkins, Cristilyn N. Wang, Sharon X. Galarza, Jhon Yana Yee, Samuel W. |
| contents | We report the discovery and characterization of TOI-6692 b, an eccentric (e~0.54) Jupiter on a 130-day orbit. TOI-6692 b was first detected as a community TESS Object of Interest (cTOI) by the Visual Survey Group and the Planet Hunters group as a single transit candidate via TESS observation. The period was subsequently confirmed via radial velocity monitoring from the Planet Finder Spectrograph on the 6.5m Magellan telescope. Additional radial velocities were acquired with the CHIRON, FEROS, and CORALIE spectrographs. LCOGT ground-based photometric follow-up was conducted over 2 weeks to detect another transit and refine the period. Although we did not detect an ingress or egress of the 11.04 hr transit, we did detect a possible in-transit signal in the multi-night data and provide an updated ephemeris for future monitoring. TOI-6692 b is one of few planets with orbital periods longer than 100 days that have a secure mass, radius, and eccentricity detection. As with most giant planets at these orbital periods, the eccentricity of TOI-6692 b is lower than that expected of planets undergoing high-eccentricity tidal migration, but is more consistent with the expectations of planet-planet scattering outcomes. A long-term radial velocity trend was detected and further monitoring is warranted to determine the outer companion period. TOI-6692 b is also one of few TESS single transit targets that have its period eventually confirmed via follow-up photometric campaigns timed to capture transits despite the relatively large ephemeris uncertainties. Such efforts highlight the capabilities of night-to-night stability on ground-based photometric facilities today. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_16357 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | TOI-6692b: An eccentric 130 day period giant planet with a single transit from TESS Bieryla, Allyson Collins, Karen A. Zhou, George Latham, David W. Carter, Brad Dalba, Paul Gagliano, Robert Jacobs, Thomas L. Kristiansen, Martti Holst Lacourse, Daryll Omohundro, Mark Schwengeler, H. M. Barkaoui, Khalid Brahm, Rafael Caldwell, Douglas A. Crane, Jeffrey D. Daylan, Tansu Deveny, Sarah Gaibor, Yadira S. Gillon, Michael Henning, Thomas Horne, Keith Butler, R. Paul Eastman, Jason D. Howell, Steve B. Jehin, Emmanuel Jensen, Eric L. N. Jordan, Andres Kunimoto, Michelle Littlefield, Colin Parc, Lena Quinn, Samuel N. Rice, Malena Rodriguez, Joseph E. Schwarz, Richard P. Sefako, Ramotholo Shectman, Stephen A. Shporer, Avi Soubkiou, Abderahmane Srdoc, Gregor Steiner, Michal Pinto, Marcelo Tala Teske, Johanna Trifonov, Trifon Ulmer-Moll, Solene Watkins, Cristilyn N. Wang, Sharon X. Galarza, Jhon Yana Yee, Samuel W. Earth and Planetary Astrophysics Solar and Stellar Astrophysics We report the discovery and characterization of TOI-6692 b, an eccentric (e~0.54) Jupiter on a 130-day orbit. TOI-6692 b was first detected as a community TESS Object of Interest (cTOI) by the Visual Survey Group and the Planet Hunters group as a single transit candidate via TESS observation. The period was subsequently confirmed via radial velocity monitoring from the Planet Finder Spectrograph on the 6.5m Magellan telescope. Additional radial velocities were acquired with the CHIRON, FEROS, and CORALIE spectrographs. LCOGT ground-based photometric follow-up was conducted over 2 weeks to detect another transit and refine the period. Although we did not detect an ingress or egress of the 11.04 hr transit, we did detect a possible in-transit signal in the multi-night data and provide an updated ephemeris for future monitoring. TOI-6692 b is one of few planets with orbital periods longer than 100 days that have a secure mass, radius, and eccentricity detection. As with most giant planets at these orbital periods, the eccentricity of TOI-6692 b is lower than that expected of planets undergoing high-eccentricity tidal migration, but is more consistent with the expectations of planet-planet scattering outcomes. A long-term radial velocity trend was detected and further monitoring is warranted to determine the outer companion period. TOI-6692 b is also one of few TESS single transit targets that have its period eventually confirmed via follow-up photometric campaigns timed to capture transits despite the relatively large ephemeris uncertainties. Such efforts highlight the capabilities of night-to-night stability on ground-based photometric facilities today. |
| title | TOI-6692b: An eccentric 130 day period giant planet with a single transit from TESS |
| topic | Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2601.16357 |