WASP-78

WASP-78
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 04h 15m 01.5043s[1]
Declination −22° 06′ 59.103″[1]
Apparent magnitude (V) 12.0[2]
Characteristics
Evolutionary stage main-sequence star[citation needed]
Spectral type F8[2]
Astrometry
Radial velocity (Rv)1.26[3] km/s
Proper motion (μ) RA: −0.367(11) mas/yr[1]
Dec.: 6.395(13) mas/yr[1]
Parallax (π)1.3851 ± 0.0136 mas[1]
Distance2,350 ± 20 ly
(722 ± 7 pc)
Details
Mass1.33±0.09[2] M☉
Radius2.20±0.12[2] R☉
Luminosity5.8±0.2[4] L☉
Surface gravity (log g)3.88±0.04[2] cgs
Temperature6100±150[2] K
Metallicity [Fe/H]-0.35±0.14[2] dex
Rotation0.4±0.4[2]
Rotational velocity (v sin i)6.63±0.16[5] km/s
Age3.4+1.5
−0.8[5] Gyr
Other designations
Gaia DR2 5089851638095503616, TYC 5889-271-1, GSC 05889-00271, 2MASS J04150149-2206591[3]
Database references
SIMBADdata

WASP-78, is a single F-type main-sequence star about 2350 light-years away. It is likely to be younger than the Sun at 3.4+1.5
−0.8 billion years.[5] WASP-78 is depleted in heavy elements, having a 45% concentration of iron compared to the Sun.

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Smalley, B.; Anderson, D. R.; Collier-Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Hellier, C.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S.; West, R. G. (2012), "WASP-78b and WASP-79b: Two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus", Astronomy & Astrophysics, 547: A61, arXiv:1206.1177, Bibcode:2012A&A...547A..61S, doi:10.1051/0004-6361/201219731, S2CID 119233646
  3. ^ a b Cite error: The named reference simbad was invoked but never defined (see the help page).
  4. ^ 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.
  5. ^ a b c Cite error: The named reference Brown2016 was invoked but never defined (see the help page).