Gliese 784
Gliese 784 is a red dwarf star of spectral type M0V, located in constellation Telescopium, 20.2 light-years from Earth.[1]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 20h 13m 53.39765 s[1] |
| Declination | −45° 09′ 50.4723″[1] |
| Apparent magnitude (V) | 7.966 |
| Characteristics | |
| Spectral type | M0V |
| Astrometry | |
| Radial velocity (Rv) | -35.10 ± 0.2 km/s |
| Parallax (π) | 161.34 ± 1.00[1] mas |
| Distance | 20.2 ± 0.1 ly (6.20 ± 0.04 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
History of observations
Gliese 784 is known at least from 1900, when it was included in Cordoba Durchmusterung (CD) catalogue by John M. Thome. The corresponding designation is CD -45 13677.[2][3]
Planetary System
In June 2019 one planet candidate were reported in orbit around Gliese 784. [13]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (unconfirmed) | 9.4+4.6 −4.1 M⊕ |
0.059±0.006 | 6.6592+0.0033 −0.0038 |
0.05+0.23 −0.05 |
— | — |
References
- Perryman; et al. (1997). "HIP 99701". The Hipparcos and Tycho Catalogues.
- Thome, J. M. (1900). "Cordoba Durchmusterung declination -42 to -52". Resultados del Observatorio Nacional Argentino. 18: 1–502. Bibcode:1900RNAO...18....1T. (See also 1900RNAO...18....1., 1900RNAO...18.....T). Page 206 (CD-45 13677)
- Thome, John Macon (1892–1932). "CD -45 13677". Cordoba Durchmusterung.
- Gliese, W.; Jahreiß, H. (1991). "Gl 784". Preliminary Version of the Third Catalogue of Nearby Stars.
- Cannon, Annie Jump; et al. (1918–1924). "HD 191849". Henry Draper Catalogue and Extension.
- SAO Staff (1966). "SAO 230110". SAO Star Catalog J2000.
- Porter, J. G.; Yowell, E. J.; Smith, E. S. (1930). "A catalogue of 1474 stars with proper motion exceeding four-tenths year". Publications of the Cincinnati Observatory. 20: 1–32. Bibcode:1930PCinO..20....1P. Page 26 (Ci 20 1196).
- Luyten, Willem Jacob (1979). "LHS 3531". LHS Catalogue, 2nd Edition.
- Luyten, Willem Jacob (1979). "NLTT 48880". NLTT Catalogue.
- Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 4794". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.).
- Perryman; et al. (1997). "HIP 99701". The Hipparcos and Tycho Catalogues.
- Hog; et al. (2000). "TYC 8392-2673-1". The Tycho-2 Catalogue.
- Barnes, J. R.; et al. (2019-06-11). "Frequency of planets orbiting M dwarfs in the Solar neighbourhood". arXiv:1906.04644v1 [astro-ph.EP].
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