ExoAtmospheres
IAC community database for exoplanet atmospheric observations
HD 63433 b
| Planet status | Confirmed |
|---|---|
| Planet type | Hot Sub-Neptune |
| Period | 7.1079477 d |
| Mass | 0.0689 MJ 21.89642 M⊕ |
| Radius | 0.1945 RJ 2.1784 R⊕ |
| Semi major axis | 0.0719 AU |
| Star name | HD 63433 |
| Star distance | 22.42 pc |
| Star teff | 5640 K |
| Star radius | 0.912 R☉ |
| Temperature (calculated) | 870 K |
| V | 7 mag |
| J | 5.624 mag |
| K | 5.258 mag |
| Alternate names | TOI-1726 b |
| Exoplanet Encyclopaedia |  |
Molecules
H: Upper limit
|
G-B: High resolution visible | Ever Elusive Exospheres: One Probable Detection and Two Non-Detections of Hα Transits in Young Systems2025, Reilly P. Milburn, Andrew W. Mann et al. |
Tentative Halpha signal likely due to stellar activity |
He: Upper limit
|
G-B:Low resolution IR | Non-Detections of Helium in the Young Sub-Jovian Planets K2-100b, HD 63433b, & V1298 Tau c2024, Munazza K. Alam, James Kirk et al. |
New He upper limit with NIRSPEC/Keck of 0.47% / 2.52 mA |
H: Upper limit
|
G-B: High resolution visible | The MOPYS project: A survey of 70 planets in search of extended He I and H atmospheres. No evidence of enhanced evaporation in young planets2024, J. Orell-Miquel, F. Murgas et al. |
|
He: Upper limit
|
G-B: High resolution IR | The MOPYS project: A survey of 70 planets in search of extended He I and H atmospheres. No evidence of enhanced evaporation in young planets2024, J. Orell-Miquel, F. Murgas et al. |
|
He: Upper limit
|
G-B:Low resolution IR | Detection of Ongoing Mass Loss from HD 63433c, a Young Mini Neptune2021, Michael Zhang, Heather A. Knutson et al. |
Upper limit (0.5%) of He with Keck/NIRSPEC |
H: No detection
|
HST STIS | Detection of Ongoing Mass Loss from HD 63433c, a Young Mini Neptune2021, Michael Zhang, Heather A. Knutson et al. |
Non detection of Lyman-a |