Table 5
Known sub-Neptune and Neptune planets in the hot Neptune desert (Teq > 1800 K) with a precision in radius of 10% or better. In addition to TOI-2196 b, three of the planets have RV measurements with a precision of 30% or better.
| Planet | Radius | Mass | Bulk density | Porb | Teq | Teff | [Fe/H] | Λ (a) | Age | Ref. |
|---|---|---|---|---|---|---|---|---|---|---|
| (R⊕) | (M⊕) | (g cm−3) | (days) | (K) | (K) | (Gyr) | ||||
| TOI-2196b | 3.51 ± 0.15 | 26.0 ± 1.3 |  |
1.20 | 1860 | 5634 | 0.14 ± 0.05 | 29.6 | 4.5 ± 2.0 | (b) |
| K2-278 b | 2.98 ± 0.23 | … | … | 3.33 | 1867 | 6747 | 0.00 ± 0.17 | … | … | (c) |
| K2-100b | 3.88 ± 0.16 | 21.8 ± 6.2 | 2.05 ± 0.64 | 1.67 | 1878 | 5945 | 0.22 ± 0.09 | 22.8 |  |
(d) |
| TOI-849 b |  |
39.1 ± 2.6 | 5.26 ± 0.71 | 0.77 | 1966 | 5374 | 0.19 ± 0.03 | 43.9 |  |
(e) |
| Kepler-644 b |  |
… | … | 3.17 | 1912 | 6540 | 0.08 ± 0.15 | … |  |
(f) |
| LTT 9779 b | 4.72 ± 0.23 | 29.3 ± 0.8 | 1.53 ± 0.23 | 0.79 | 2064 | 5443 | 0.27 ± 0.03 | 22.9 |  |
(g) |
References. (a)Fossati et al. (2017). (b)This work. (c)Livingston et al. (2018). (d)Barragân et al. (2019a).(e) Armstrong et al. (2020).(f)Berger et al. (2018).(g)Jenkins et al. (2020b).
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