Astronomy:TOI-763
TOI-763 is a single high proper motion G-type star in the constellation of Centaurus, near the galaxy NGC 4832 in the sky.[1] It is approximately 0.9 times the mass and radius of the Sun, with a surface temperature of 5,450±60 K and a spectral type of G7.[2] TOI-763 is too faint to be visible to the naked eye. Based upon parallax measurements, it is located 312 light-years (95.6 parsecs) in distance from the Sun. The object is drifting towards the Sun with a radial velocity of −13.8 km/s.[3]
Planetary system
In August of 2020, two exoplanets were identified via the transit method of exoplanet detection by the Transiting Exoplanet Survey Satellite (TESS), a space telescope for NASA's Explorer program, designed to search for exoplanets. A third candidate planet is suspected based on radial velocity observations.[4]
Neither of these two planets orbit in the habitable zone and are both believed to be sub-Neptune planets.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 9.79±0.78 M⊕ | 0.0600±0.0006 | 5.6057±0.0013 | 0.04+0.04 −0.03 |
— | 2.28±0.11 R⊕ |
| c | 9.32±1.02 M⊕ | 0.1011±0.0010 | 12.2737+0.0053 −0.0077 |
0.04+0.04 −0.03 |
— | 2.63±0.12 R⊕ |
| d (unconfirmed) | ≥9.54±1.59 M⊕ | 0.2504+0.0093 −0.0105 |
47.7991±2.7399 | ~0 | — | — |
See also
References
- ↑ "CD-39 7945". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CD-39+7945.
- ↑ "TOI-763". https://www.exoplanetkyoto.org/exohtml/TOI-763.html.
- ↑ Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 4.0 4.1 Fridlund, M; Livingston, J; Gandolfi, D; Persson, C M; Lam, K W F; Stassun, K G; Hellier, C; Korth, J et al. (2020-10-01). "The TOI-763 system: sub-Neptunes orbiting a Sun-like star". Monthly Notices of the Royal Astronomical Society 498 (3): 4503–4517. doi:10.1093/mnras/staa2502. ISSN 0035-8711. Bibcode: 2020MNRAS.498.4503F.
- ↑ "TOI-763 c - NASA Science" (in en-US). 2020-09-24. https://science.nasa.gov/exoplanet-catalog/toi-763-c/.
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12h 26m 17.8916s, −51° 21′ 46.2141″
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