WASP-67

WASP-67
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 19h 42m 58.5217s[1]
Declination −19° 56′ 58.523″[1]
Apparent magnitude (V) 12.54
Characteristics
Evolutionary stage Main sequence
Spectral type K0V[2]
Astrometry
Radial velocity (Rv)0.29[1] km/s
Proper motion (μ) RA: 1.759[1] mas/yr
Dec.: −32.902[1] mas/yr
Parallax (π)5.2496 ± 0.0427 mas[1]
Distance621 ± 5 ly
(190 ± 2 pc)
Details[3]
Mass0.91±0.28 M☉
Radius0.88±0.08 R☉
Surface gravity (log g)4.35±0.15 cgs
Temperature5200±100 K
Metallicity [Fe/H]−0.07 dex
Rotational velocity (v sin i)2.1±0.4[4] km/s
Age8.7+5.5
−8.6[2] Gyr
Other designations
Gaia DR2 6868476691490044672, WASP-67, TYC 6307-1388-1, 2MASS J19425852-1956585[5]
Database references
SIMBADdata

WASP-67 is a K-type main-sequence star about 620 light-years away. The stars age is poorly constrained, but is likely older than the Sun`s at approximately 8.7+5.5
−8.6 billion years (ie. somewhere between 100 million years and the age of the universe).[2] WASP-67 is slightly depleted in heavy elements, having 85% of the solar abundance of iron.[3]

A multiplicity survey in 2016 has found one candidate stellar companion to WASP-67 at a projected separation of 4.422″±0.018″.[6] Nonetheless, follow-up observations in 2017 failed to find any bound stellar companions.[7]

  1. ^ a b c d e f 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. ^ a b c Cite error: The named reference Mancini2014 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Stassun2016 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Hellier2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  6. ^ Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Haugbølle, T.; Hinse, T. C.; Juncher, D.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Schmidt, R. W.; et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere", Astronomy & Astrophysics, 589: A58, arXiv:1603.03274, Bibcode:2016A&A...589A..58E, doi:10.1051/0004-6361/201527970, S2CID 14215845
  7. ^ Evans, D. F.; Southworth, J.; Smalley, B.; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Hinse, T. C.; Henning, Th.; Hundertmark, M.; Kains, N.; Kerins, E.; Korhonen, H.; Kokotanekova, R.; Kuffmeier, M.; Longa-Peña, P.; Mancini, L.; MacKenzie, J.; Popovas, A.; Rabus, M.; Rahvar, S.; Sajadian, S.; Snodgrass, C.; et al. (2018), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016", Astronomy & Astrophysics, 610: A20, arXiv:1709.07476, Bibcode:2018A&A...610A..20E, doi:10.1051/0004-6361/201731855, S2CID 53400492