WASP-88

WASP-88
Observation data
Epoch J2000      Equinox J2000
Constellation Indus
Right ascension 20h 38m 02.6870s[1]
Declination −48° 27′ 43.4255″[1]
Apparent magnitude (V) 11.39[2]
Characteristics
Evolutionary stage main-sequence star or subgiant star[3]
Spectral type F6[3]
Astrometry
Radial velocity (Rv)−5.1±0.6[4] km/s
Proper motion (μ) RA: 5.890[4] mas/yr
Dec.: −4.892[4] mas/yr
Parallax (π)1.7844 ± 0.0185 mas[4]
Distance1,830 ± 20 ly
(560 ± 6 pc)
Position (relative to WASP-88)[2]
ComponentWASP-88B
Epoch of observation2017
Angular distance3.350±0.015″
Position angle355.5±0.5°
Projected separation1877±8 AU
Details[5]
WASP-88
Mass1.450±0.050[6] M☉
Radius2.08+0.12
−0.06[6] R☉
Surface gravity (log g)4.24±0.06 cgs
Temperature6450±61 K
Metallicity [Fe/H]0.03±0.04 dex
Rotational velocity (v sin i)8.4±0.8[6] km/s
Age3.0±1.3 Gyr
WASP-88B
Mass0.11+0.03
−0.02[2] M☉
Temperature2844+155
−209[2] K
Other designations
Gaia DR2 6482103014085857024, 2MASS J20380268-4827434[1]
Database references
SIMBADdata

WASP-88 is a F-type main-sequence star. Its surface temperature is 6450±61 K. WASP-88 is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.03±0.04,[5] and is younger at an age of 3.0±1.3 billion years.

A multiplicity survey did detect a candidate red dwarf companion to WASP-88 in 2020, with a 1.65% probability of it being an unrelated background star.[2]

  1. ^ a b c "WASP-88". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-25.
  2. ^ a b c d e Bohn, A. J.; Southworth, J.; Ginski, C.; Kenworthy, M. A.; Maxted, P. F. L.; Evans, D. F. (2020), "A multiplicity study of transiting exoplanet host stars. I. High-contrast imaging with VLT/SPHERE", Astronomy & Astrophysics, 635: A73, arXiv:2001.08224, Bibcode:2020A&A...635A..73B, doi:10.1051/0004-6361/201937127, S2CID 210861118
  3. ^ a b Cite error: The named reference Delrez2013 was invoked but never defined (see the help page).
  4. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  5. ^ a b Andreasen, D. T.; Sousa, S. G.; Tsantaki, M.; Teixeira, G. D. C.; Mortier, A.; Santos, N. C.; Suarez-Andres, L.; Delgado-Mena, E.; Ferreira, A. C. S. (2017), "SWEET-Cat update and FASMA A new minimization procedure for stellar parameters using high-quality spectra", Astronomy & Astrophysics, A69: 600, arXiv:1703.06671, Bibcode:2017A&A...600A..69A, doi:10.1051/0004-6361/201629967, S2CID 119534579
  6. ^ a b c Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).