Astronomy:WASP-61
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Short description: Star in the constellation Lepus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h 01m 11.9187s[1] |
| Declination | −26° 03′ 14.9668″[1] |
| Apparent magnitude (V) | 12.49 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | F7V |
| Astrometry | |
| Radial velocity (Rv) | 18.66[1] km/s |
| Proper motion (μ) | RA: 0.495[1] mas/yr Dec.: 3.169[1] mas/yr |
| Parallax (π) | 2.0176 ± 0.0228[1] mas |
| Distance | 1,620 ± 20 ly (496 ± 6 pc) |
| Details[2] | |
| Mass | 1.22±0.07 M☉ |
| Radius | 1.36±0.03 R☉ |
| Surface gravity (log g) | 4.21±0.21[3] cgs |
| Temperature | 6265±168[3] K |
| Metallicity [Fe/H] | -0.38±0.11[3] dex |
| Rotational velocity (v sin i) | 10.3±0.5 km/s |
| Age | 3.8+1.8−0.9 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
WASP-61 is a single F-type main-sequence star about 1560 light-years away. The star age is much likely younger than the Sun's at approximately 3.8+1.8−0.9 billion years. WASP-61 is depleted in heavy elements, having just 40% of the solar abundance of iron.[3]
Planetary system
In 2012 a transiting superjovian planet b was detected on a tight, circular orbit.[5] Its equilibrium temperature is 1565±35 K.[5]
The planetary orbit is well aligned with the equatorial plane of the star, misalignment equal to 4.0+17.1−18.4°[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 2.05+0.18−0.17 MJ | 0.05146+0.00097−0.00099 | 3.8559000±0.000003 | <0.074 | 89.35+0.45−0.66[5]° | 1.41±0.22[7] RJ |
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 Bonomo, A. S. et al. (2017), "The GAPS Programme with HARPS-N at TNG", Astronomy & Astrophysics 602: A107, doi:10.1051/0004-6361/201629882, Bibcode: 2017A&A...602A.107B
- ↑ 3.0 3.1 3.2 3.3 Andreasen, D. T.; Sousa, S. G.; Tsantaki, M.; Teixeira, G. D. C.; Mortier, A.; Santos, N. C.; Suárez-Andrés, L.; Delgado-Mena, E. et al. (2017), "SWEET-Cat update and FASMA", Astronomy & Astrophysics 600: A69, doi:10.1051/0004-6361/201629967
- ↑ "WASP-61". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-61.
- ↑ 5.0 5.1 5.2 Hellier, Coel; Anderson, D. R.; Collier Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Jehin, E.; Lendl, M. et al. (2012), "Seven transiting hot-Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b & WASP-67b", Monthly Notices of the Royal Astronomical Society 426 (1): 739–750, doi:10.1111/j.1365-2966.2012.21780.x, Bibcode: 2012MNRAS.426..739H
- ↑ Brown, D. J. A.; Triaud, A. H. M. J.; Doyle, A. P.; Gillon, M.; Lendl, M.; Anderson, D. R.; Collier Cameron, A.; Hébrard, G. et al. (2016), "Rossiter–Mc Laughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems", Monthly Notices of the Royal Astronomical Society 464: 810–839, doi:10.1093/mnras/stw2316
- ↑ Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2016), "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes", The Astronomical Journal 153 (3): 136, doi:10.3847/1538-3881/aa5df3, Bibcode: 2017AJ....153..136S
Coordinates: 
05h 01m 11.9187s, −26° 03′ 14.9668″
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