Astronomy:WASP-62
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 48m 33.59333s[1] |
| Declination | −63° 59′ 18.3884″[1] |
| Apparent magnitude (V) | 10.21[2] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | F |
| Apparent magnitude (B) | 10.73[2] |
| Apparent magnitude (G) | 10.077±0.003[1] |
| Apparent magnitude (R) | 9.93[2] |
| Astrometry | |
| Radial velocity (Rv) | 15.24±0.25[1] km/s |
| Proper motion (μ) | RA: -15.439[1] mas/yr Dec.: 26.151[1] mas/yr |
| Parallax (π) | 5.6910 ± 0.0113[1] mas |
| Distance | 573 ± 1 ly (175.7 ± 0.3 pc) |
| Details[3] | |
| Mass | 1.250±0.050 M☉ |
| Radius | 1.280±0.050 R☉ |
| Surface gravity (log g) | 4.45±0.1 cgs |
| Temperature | 6230±80 K |
| Metallicity [Fe/H] | 0.040±0.060 dex |
| Rotational velocity (v sin i) | 8.70±0.40 km/s |
| Age | 2.60+0.50 −0.70 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
WASP-62, formally named Naledi, is a single star about 573 light-years (176 parsecs) away. It is an F class main-sequence star, orbited by a planet, WASP-62b. The age of WASP-62 is much younger than the Sun at 0.8±0.6 billion years,[4] and it has a metal abundance similar to the Sun.
Nomenclature
The designation WASP-62 indicates that this was the 62nd star found to have a planet by the Wide Angle Search for Planets.
In December 2019, WASP-62 was named Naledi and its planet was named Krotoa by amateur astronomers from South Africa as part of the second NameExoWorlds campaign.[5][6]
Planetary system
A transiting hot Jupiter exoplanet orbiting WASP-62 was discovered by WASP in 2012.[7] The planet's equilibrium temperature is 1440±30 K, but the measured average temperature is colder at 1329.6±44.8 K.[8] In 2020, a transmission spectrum indicated the atmosphere of WASP-62b is free of clouds. It contains sodium and possibly silicon hydrides.[9]
The planetary orbit is slightly misaligned to the equatorial plane of the star, with the misalignment angle equal to 19.4+5.1−4.9°.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Krotoa | 0.562±0.042 MJ | 0.05672+0.00075 −0.00079[3] |
4.4119530(30) | <0.075[3] | 88.30+0.90 −0.60° |
1.390±0.060 RJ |
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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.
- ↑ 2.0 2.1 2.2 2.3 "CPD-64 484". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CPD-64+484.
- ↑ 3.0 3.1 3.2 Bonomo, A. S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B.
- ↑ 4.0 4.1 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–McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems", Monthly Notices of the Royal Astronomical Society 464 (1): 810–839, doi:10.1093/mnras/stw2316, Bibcode: 2017MNRAS.464..810B
- ↑ "2019 Approved Names". IAU. https://www.nameexoworlds.iau.org/2019approved-names.
- ↑ "International Astronomical Union Approves Names For New Stars And Exoplanets" (in en). 18 December 2019. https://africanews.space/international-astronautical-union-approves-names-for-new-stars-and-exoplanets/.
- ↑ 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
- ↑ 8.0 8.1 Kilpatrick, Brian M.; Lewis, Nikole K.; Kataria, Tiffany; Deming, Drake; Ingalls, James G.; Krick, Jessica E.; Tucker, Gregory S. (2016), "Spitzer secondary eclipse depths with multiple intrapixel sensitivity correction methods observations of WASP-13b, WASP-15b, WASP-16b, WASP-62b, and HAT-P-22b", The Astronomical Journal 153 (1): 22, doi:10.3847/1538-3881/153/1/22, Bibcode: 2017AJ....153...22K
- ↑ Alam, Munazza K.; Lopez-Morales, Mercedes; MacDonald, Ryan J.; Nikolov, Nikolay; Kirk, James; Goyal, Jayesh M.; Sing, David K.; Wakeford, Hannah R. et al. (2021), "Evidence of a Clear Atmosphere for WASP-62b: The Only Known Transiting Gas Giant in the JWST Continuous Viewing Zone", The Astrophysical Journal 906 (2): L10, doi:10.3847/2041-8213/abd18e, Bibcode: 2021ApJ...906L..10A
Coordinates: 
05h 48m 33.5938s, −63° 59′ 18.3868″
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