Table 1
Relevant system parameters of WASP-12.
| Parameter | Value | Source(a) |
|---|---|---|
| R★ [R⊙] | 1.66 ± 0.05 | T21(b) |
| Rp R★−1 | 0.1166445 ± 0.0000097 | T21 |
| RP [RJup] | 1.884 ± 0.057 | T21 |
| a [au] | 0.02399 ± 0.00072 | T21 |
| Mp [Mjup] | 1.46 ± 0.27 | T21 |
| ρp [g cm−3] | 0.271 ± 0.056 | T21 |
| log gp [cgs] | 3.03 ± 0.04 | TW(c) |
| iorb [deg] | 84.955 ± 0.037 | T21 |
| d★ [pc] | 413.0 ± 3.3 | DR3 |
| Teff [K] | 6250 ± 100 | F10 |
| Teq [K] | 2520 ± 40 | TW(d) |
| v sin i [km s−1] |  |
A12 |
| γ [km s−1] | 19. 46 ± 0.02 | TW |
| K★ [m s−1] | 226 ± 4 | H09 |
 |
–5.5 | K10 |
| Ephemerides (constant period) | ||
| T0 [BJDtdb] | 2456305.455519 ± 0.000026 | T21 |
| Porb [d] | 1.091419426 ± 0.000000022 | T21 |
| Ephemerides (orbital decay) | ||
| T0 [BJDtdb] | 2456305.455795 ± 0.000038 | T21 |
| Porb [d] | 1.091420090 ± 0.000000041 | T21 |
| dPorb dE−1 [d/orbit] | (−9.45 ± 0.47) × 10−10 | T21 |
Notes. (a)T21: Turner et al. (2021), F10: Fossati et al. (2010a), DR3: Gaìa Data Release 3 (Gaia Collaboration 2016, 2023), A12: Albrecht et al. (2012), H09: Hebb et al. (2009), K10: Knutson et al. (2010), TW: This work.(b) Value adopted by T21 (derived from their numbers). The value is consistent with that of 1.59 R⊙ reported by Stassun et al. (2017) and the radii implicit in the model masses and densities given by Bailey & Goodman (2019), and the radius of 1.57 ± 0.07 R⊙ reported by Hebb et al. (2009). (c)Calculated using Eq. (4) by Southworth et al. (2007). (d)Assuming zero Bond albedo (Eq. (C.1)).
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