WASP-19
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Vela[1] |
| Right ascension | 09h 53m 40.076s[2] |
| Declination | −45° 39′ 33.08″[2] |
| Apparent magnitude (V) | 12.312 ± 0.017[3] |
| Characteristics | |
| Spectral type | G8V |
| Apparent magnitude (B) | 13.58 |
| Apparent magnitude (R) | 12.17 |
| Apparent magnitude (I) | 11.35 |
| Apparent magnitude (J) | 10.911 ± 0.026[4] |
| Apparent magnitude (H) | 10.602 ± 0.022[4] |
| Apparent magnitude (K) | 10.481 ± 0.023[4] |
| B−V color index | 1.3 |
| V−R color index | 0.1 |
| R−I color index | 0.82 |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: −35.4 ± 2.0[2] mas/yr Dec.: 16.7 ± 1.6[2] mas/yr |
| Distance | 815 ly (250[5] pc) |
| Absolute magnitude (MV) | 5.3 |
| Details | |
| Mass | 0.95 M☉ |
| Radius | 0.93 R☉ |
| Luminosity | 0.71 L☉ |
| Surface gravity (log g) | 4.45 ± 0.05[6] cgs |
| Temperature | 5568 ± 71[6] K |
| Metallicity [Fe/H] | 0.15 ± 0.07[6] dex |
| Rotation | 10.5 ± 0.2 days[5] |
| Rotational velocity (v sin i) | 4.0 ± 1.0[6] km/s |
| Age | 600 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
WASP-19 is a magnitude 12.3 star located in the Vela constellation of the southern hemisphere.[5] This star has been found to host a transiting hot Jupiter-type planet in tight orbit.
Planetary system
In December 2009 SuperWASP project announced that a hot Jupiter type extrasolar planet, WASP-19b, was orbiting very close to this star and with the shortest orbital period so far detected.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.139 ± 0.030 MJ | 0.01634 ± 0.00019 | 0.7888396 ± 0.00000010 | 0 | 78.76 ± 0.13° | 1.410 ± 0.017 RJ |
See also
References
- ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
- 1 2 3 4 Zacharias, N.; et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal 145 (2). 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44.Vizier catalog entry
- ↑ Maxted, P. F. L.; et al. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society 418 (2): 1039–1042. arXiv:1108.0349. Bibcode:2011MNRAS.418.1039M. doi:10.1111/j.1365-2966.2011.19554.x.
- 1 2 3 Skrutskie, M. F.; et al. (2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.Vizier catalog entry
- 1 2 3 4 Hebb, L.; et al. (2010). "WASP-19b: The Shortest Period Transiting Exoplanet Yet Discovered". The Astrophysical Journal 708 (1): 224–231. arXiv:1001.0403. Bibcode:2010ApJ...708..224H. doi:10.1088/0004-637X/708/1/224.
- 1 2 3 4 Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161.
- ↑ Mancini, L.; et al. (2013). "Physical properties, transmission and emission spectra of the WASP-19 planetary system from multi-colour photometry". Monthly Notices of the Royal Astronomical Society 436 (1): 2–18. arXiv:1306.6384. Bibcode:2013MNRAS.436....2M. doi:10.1093/mnras/stt1394.
Coordinates: 
09h 53m 40.07s, −45° 39′ 33.06″
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