WASP-62

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WASP-62
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Dorado
Right ascension 05h 48m 33.5938s[1]
Declination −63° 59′ 18.3868″[1]
Apparent magnitude (V) 10.21
Characteristics
Evolutionary stage main-sequence star
Spectral type F
Apparent magnitude (B) 10.73 [1]
Apparent magnitude (G) 10.0721 [1]
Apparent magnitude (R) 9.93 [1]
Astrometry
Radial velocity (Rv)15.47 km/s
Proper motion (μ) RA: -15.641[2] mas/yr
Dec.: 26.046[2] mas/yr
Parallax (π)5.6649 ± 0.0189[2] mas
Distance576 ± 2 ly
(176.5 ± 0.6 pc)
Details[3]
Mass1.250±0.05 M☉
Radius1.280±0.05 R☉
Surface gravity (log g)4.45±0.1 cgs
Temperature6230±80 K
Metallicity [Fe/H]0.04±0.06 dex
Rotational velocity (v sin i)8.7±0.4 km/s
Age0.8±0.6[4] Gyr
Other designations
Naledi, CPD−64 484, Gaia DR2 4756649415309914240, TOI-102, TYC 8900-874-1, GSC 08900-00874, 2MASS J05483359-6359183[1]
Database references
SIMBAD484 data

WASP-62 is a single star about 575 light-years 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. WASP-62 was named "Naledi" in 2019.[5]

Planetary system[]

A transiting hot Jupiter exoplanet orbiting WASP-62 was discovered by WASP in 2012.[6] The planet's equilibrium temperature is 1440±30 K, but the measured average temperature is colder at 1329.6±44.8 K.[3] In 2020, a transmission spectrum indicated the atmosphere of WASP-62b is free of clouds. It contains sodium and possibly silicon hydrides.[7]

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]

WASP-62b was named "Krotoa" in 2019 by amateur astronomers from South Africa as part of the NameExoWorlds contest.[5]

The WASP-62 planetary system[3]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.562±0.042 MJ 0.0567±0.0007[6] 4.4119530±0.000003 <0.21[6] 88.3+0.9
−0.6° 		1.390±0.060 RJ

References[]

  1. ^ a b c d e f "CPD-64 484". SIMBAD. Centre de données astronomiques de Strasbourg.
  2. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  3. ^ a b c 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: 22, arXiv:1611.08708, doi:10.3847/1538-3881/153/1/22, S2CID 12168984
  4. ^ a b c Brown, D. J. A.; Triaud, A. H. M. J.; Doyle, A. P.; Gillon, M.; Lendl, M.; Anderson, D. R.; Collier Cameron, A.; Hébrard, G.; Hellier, C.; Lovis, C.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Smalley, B. (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: 810–839, arXiv:1610.00600, doi:10.1093/mnras/stw2316, S2CID 53497449
  5. ^ a b "International Astronomical Union Approves Names For New Stars And Exoplanets". Space in Africa. 18 December 2019. Retrieved 2020-11-12.
  6. ^ a b c Hellier, Coel; Anderson, D. R.; Collier Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S.; West, R. G. (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: 739–750, arXiv:1204.5095, doi:10.1111/j.1365-2966.2012.21780.x, S2CID 54713354
  7. ^ Alam, Munazza K.; Lopez-Morales, Mercedes; MacDonald, Ryan J.; Nikolov, Nikolay; Kirk, James; Goyal, Jayesh M.; Sing, David K.; Wakeford, Hannah R.; Rathcke, Alexander D.; Deming, Drake L.; Sanz-Forcada, Jorge; Lewis, Nikole K.; Barstow, Joanna K.; Mikal-Evans, Thomas; Buchhave, Lars A. (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, arXiv:2011.06424, doi:10.3847/2041-8213/abd18e, S2CID 226306572

Coordinates: Sky map 05h 48m 33.5938s, −63° 59′ 18.3868″

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