HD 163607 is a star located in the constellation Dragon at a distance of about 225 light years from us. At least two planets revolve around the stars.
| HD 163607 | |||
|---|---|---|---|
| Star | |||
| Observational data ( Age J2000.0 ) | |||
| Type of | Single star | ||
| Right ascension | |||
| Declination | |||
| Distance | 225 St. years (69 pc ) [1] | ||
| Visible magnitude ( V ) | 8.15 [1] | ||
| Constellation | The Dragon | ||
| Astrometry | |||
| Radial velocity ( R v ) | |||
| Own movement (μ) | RA: -75.74 [3] Dec: 120.05 [3] | ||
| Parallax (π) | 14.53 ± 0.46 [3] mas | ||
| Absolute magnitude (V) | 3.96 [1] | ||
| Characteristics | |||
| Spectral class | G5IV [1] | ||
| Color Index ( B - V ) | 0.78 [1] | ||
| physical characteristics | |||
| Weight | 1.09 [1] M ☉ | ||
| Radius | 1.63 [1] R ☉ | ||
| Age | 8.6 billion [1] years | ||
| Temperature | 5543 [1] K | ||
| Luminosity | 2.3 [1] L ☉ | ||
| Metallicity | [Fe / H] = 0.21 [1] | ||
| Rotation | 1.49 km / s -1 [1] | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [3] | |||
Content
- 1 Features
- 2 Planetary system
- 3 notes
- 4 See also
- 5 Links
Features
HD 163607 - 8.15 magnitude star for the first time in astronomical literature is mentioned in the catalog of Henry Draper , published at the beginning of the XX century . It represents a yellow dwarf with a mass and radius equal to 1.09 and 1.63 solar, respectively. [1] The surface temperature of HD 163607 is approximately 5543 Kelvin . The luminosity of a star exceeds solar luminosity by 2.3 times. The age of the star is estimated by astronomers at 8.6 billion years.
Planet System
In 2011, a group of astronomers working with data obtained at the Keck Observatory announced the discovery [1] of two planets in the system - HD 163607 b and HD 163607 c . Both of them are gas giants . Planet b turns very close to the parent star at a distance of 0.36 AU Therefore, it belongs to the class of hot Jupiters . Its mass is about 77% of the mass of Jupiter . A year on it lasts approximately 75 days.
The orbit of the second planet, HD 163607 c , is much further, at a distance of 2.42 AU from the star (at about this distance from the Sun, the dwarf planet Ceres in our solar system is drawn). The mass of the planet exceeds the mass of Jupiter by more than two times. The discovery of both planets was accomplished by the Doppler method .
| Planet | Weight ( M J ) | Radius ( R J ) | Circulation period ( days ) | Semimajor axis orbits ( a.u. ) | Eccentricity orbits |
|---|---|---|---|---|---|
| b | 0.77 ± 0.04 | ? | 75.229 ± 0.02 | 0.36 ± 0.01 | 0.73 ± 0.02 |
| c | 2.29 ± 0.16 | ? | 1314 ± 8 | 2.42 ± 0.01 | 0.12 ± 0.06 |
Notes
- ↑ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Matthew J. Giguere, Debra A. Fischer, Andrew W. Howard, John A. Johnson, Gregory W. Henry, Jason T. Wright, Geoffrey W. Marcy, Howard T. Isaacson, Fengji Hou, Julien Spronck. A High Eccentricity Component in the Double Planet System Around HD 163607 and a Planet Around HD 164509 . Arxiv.org (Sep 14, 2011). Date of treatment December 28, 2011. Archived on September 6, 2012.
- ↑ 1 2 3 4 5 6 Collaboration G. Gaia DR2 - 2018 .-- Vol. 1345.
- ↑ 1 2 3 4 SIMBAD - HD 163607 in the SIMBAD database . Date of treatment December 28, 2011.
See also
- Dragon constellation star list