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WASP-43

WASP-43 / Gnomon
Observation data
Epoch J2000      Equinox J2000
Constellation Sextans[1]
Right ascension 10h 19m 38.00889s[2]
Declination −09° 48′ 22.6058″[2]
Apparent magnitude (V) 12.46[3]
Characteristics
Evolutionary stage main sequence[2]
Spectral type K7V[4]
Astrometry
Radial velocity (Rv)−3.42±0.55[2] km/s
Proper motion (μ) RA: −41.992(18) mas/yr[2]
Dec.: −38.004(18) mas/yr[2]
Parallax (π)11.4740±0.0163 mas[2]
Distance284.3 ± 0.4 ly
(87.2 ± 0.1 pc)
Details[3]
Mass0.723+0.028
−0.031[5] M☉
Radius0.6506±0.0054 R☉
Surface gravity (log g)4.639±0.01[5] cgs
Temperature4286+34
−40[5] K
Metallicity [Fe/H]−0.01±0.15 dex
Rotation15.6±0.4 d
Rotational velocity (v sin i)2.26±0.54 km/s
Age7±7[6] Gyr
Other designations
Gnomon, TOI-656, TIC 36734222, WASP-43, GSC 05490-00141, 2MASS J10193800-0948225[7]
Database references
SIMBADdata
Exoplanet Archivedata

WASP-43, also named Gnomon, is a K-type star about 284 light-years (87 parsecs) away in the Sextans constellation. It is about half the size of the Sun, and has approximately half the mass. WASP-43 has one known planet in orbit, a hot Jupiter called WASP-43b. At the time of publishing of WASP-43b's discovery on April 15, 2011, the planet was the most closely orbiting hot Jupiter discovered. The small orbit of WASP-43b is thought to be caused by WASP-43's unusually low mass. WASP-43 was first observed between January and May 2009 by the SuperWASP project, and was found to be cooler and slightly richer in metals than the Sun. WASP-43 has also been found to be an active star that rotates at a high velocity.

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Esposito2017 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Hellier2011 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Wang2021 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

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