Open Access
Table 1
Parameters for Teegarden’s star and its three planets.
Parameter | Value | Ref. |
---|---|---|
Teegarden’s star | ||
Distance d (pc) | 3.831 ± 0.004 | Gaia DR2 |
Spectral type | M7.0V | Alo15 |
Teff (K) | 3034 ± 45 | Marf21 |
logg (cm s−2) | 5.19 ± 0.2 | Marf21 |
[Fe/H] | −0.11 ± 0.28 | Marf21 |
Lbol (10−5 L⊙) | 72.2 ± 0.05 | Marf21 |
R (R⊙) | 0.120 ± 0.012 | Marf21 |
M (M⊙) | 0.097 ± 0.010 | Marf21 |
log (LHα/Lbol) | −5.37 | Zech19 |
Age (Gyr) | >8 | Zech19 |
Prot (d) | 97.56 | Shan24 |
LX (erg s−1) | 2.8…4.2 × 1025 | |
log(LX/Lbol) | −5.0…−4.81 | |
FX (erg s−1 cm−2) | 1.58…2.4 × 10−14 | |
Planet b | ||
Period (d) | 4.91 | Drei24 |
Semi major axis (au) | 0.0259 | Drei24 |
Planet c | ||
Period (d) | 11.416 | Drei24 |
Semi major axis (au) | 0.0455 | Drei24 |
Planet d | ||
Period (d) | 26.13 | Drei24 |
Semi major axis (au) | 0.0791 | Drei24 |
Notes. Alo15: Alonso-Floriano et al. (2015) Drei24: Dreizler et al. (2024); Gaia DR2: Gaia Collaboration (2018); Marf21: Marfil et al. (2021); Shan24: Shan et al. (2024); Tee03: Teegarden et al. (2003); Zech19: Zechmeister et al. (2019).
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