Planet HD 221420 b
| Name | HD 221420 b | ||
| Planet Status | Confirmed | ||
| Discovered in | 2019 | ||
| Mass | — | ||
| Mass*sin(i) | 9.7 (± 1.1) MJ |  |
|
| Semi-Major Axis | — | |
|
| Orbital Period | 22482.0 (± 4200.0) day | |
|
| Eccentricity | 0.42 (± 0.07) | |
|
| ω | 164.4 ( -6.3 +6.9 ) deg | |
|
| Tperi | — | ||
| Radius | — | ||
| Inclination | — | ||
| Update | 2019-05-02 | ||
| Detection Method | Radial Velocity | ||
| Mass Detection Method | Radial Velocity | ||
| Radius Detection Method | — | ||
| Primary transit | — | ||
| Secondary transit | — | ||
| λ | — | ||
| Impact Parameter b | — | ||
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | 54.7 ( -3.6 +4.2 ) m/s | |
|
| Calculated temperature | — | ||
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | — |
Star
HD 221420| Name | HD 221420 | ||
| Distance | 31.8 pc | |
|
| Spectral type | G2IV-V | ||
| Apparent magnitude V | 5.8 | ||
| Mass | 1.67 (± 0.11) MSun | |
|
| Age | — | ||
| Effective temperature | 5830.0 K | |
|
| Radius | — | ||
| Metallicity [Fe/H] | 0.29 | |
|
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 23:33:20.0 | ||
| Dec2000 | -77:23:07 | ||
| Alternate Names | |||
| Planetary system | 1 planet |
Related publications
True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
2021
VENNER A., VANDERBURG A. & PEARCE L.
Astron. J., 162, 12
paper arxiv
Precise Masses and Orbits for Nine Radial Velocity Exoplanets
2021
LI Y., BRANDT T., BRANDT M., DUPUY T., MICHALIK D. et al.
Astron. J., 162, 266
paper arxiv
Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques
2019
KANE S., DALBA P., LI Zh., HORCH E., HIRSCH L. et al.
Astron. J., 157, 252
paper arxiv
