WASP-34

WASP-34, also named Amansinaya[6], is a sunlike star of spectral type G5V that has 1.01 ± 0.07 times the mass and 0.93 ± 0.12 times the diameter of the Sun. It rotates on its axis every 34 ± 15 days, indicating it is around 6.7 billion years old.[3]

HD 98219
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Crater
Right ascension  11h 01m 35.8979s[1]
Declination –23° 51′ 38.385″[1]
Apparent magnitude (V) +10.28[2]
Characteristics
Spectral type G5[3]
Astrometry
Proper motion (μ) RA: –43.900 ± 0.069[1] mas/yr
Dec.: –65.794 ± 0.069[1] mas/yr
Parallax (π)7.5418 ± 0.0484[1] mas
Distance432 ± 3 ly
(132.6 ± 0.9 pc)
Details
Mass1.01[3] M☉
Radius0.93[3] R☉
Luminosity1.19[4] L☉
Surface gravity (log g)4.5[3] cgs
Temperature5,700[3] K
Metallicity [Fe/H]−0.02[3] dex
Rotational velocity (v sin i)0.5[5] km/s
Age6.80[4] Gyr
Database references
SIMBADdata

It has a planet 0.59 ± 0.01 times as massive as Jupiter that takes 4.317 days to complete an orbit.[3]

There is increasing evidence that there is a massive object orbiting the system further out.

Naming

In 2019 the IAU announced that WASP-34 and its planet WASP-34b would be given official names chosen by school children from The Philippines.[7][8] The star is named Amansinaya, after Aman Sinaya, which is one of the two trinity deities of the Philippine's Tagalog mythology, and is the primordial deity of the ocean and protector of fisherman. The planet WASP-34b is named Haik. Haik is the successor of the primordial Aman Sinaya as the God of the Sea of the Philippine's Tagalog mythology.[6]

References
  1. 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.
  2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H.
  3. Smalley, B.; Anderson, D. R.; Collier Cameron, A.; Hellier, C.; Lendl, M.; Maxted, P. F. L.; Queloz, D.; Triaud, A. H. M. J.; West, R. G.; Bentley, S. J.; Enoch, B.; Gillon, M.; Lister, T. A.; Pepe, F.; Pollacco, D.; Segransan, D.; Smith, A. M. S.; Southworth, J.; Udry, S.; Wheatley, P. J.; Wood, P. L.; Bento, J. (2011). "WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system". Astronomy and Astrophysics. 526: 5. arXiv:1012.2278. Bibcode:2011A&A...526A.130S. doi:10.1051/0004-6361/201015992. A130.
  4. Bonfanti, A.; Ortolani, S.; Nascimbeni, V. (2016). "Age consistency between exoplanet hosts and field stars". Astronomy and Astrophysics. 585: A5. arXiv:1511.01744. Bibcode:2016A&A...585A...5B. doi:10.1051/0004-6361/201527297.
  5. Brewer, John M.; Fischer, Debra A.; Valenti, Jeff A.; Piskunov, Nikolai (2016). "Spectral Properties of Cool Stars: Extended Abundance Analysis of 1,617 Planet-search Stars". The Astrophysical Journal Supplement Series. 225 (2): 32. arXiv:1606.07929. Bibcode:2016ApJS..225...32B. doi:10.3847/0067-0049/225/2/32.
  6. "Approved names". NameExoworlds. Retrieved 2020-01-02.
  7. "NameExoWorlds". 2019. Retrieved 6 September 2019.
  8. "Naming". 2019. Retrieved 6 September 2019.



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