WASP-26

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WASP-26
Observation data
Epoch J2000      Equinox
Constellation Cetus
Right ascension 00h 18m 24.7008s[1]
Declination −15° 16′ 02.2775″[1]
Apparent magnitude (V) 11.30[2]
Characteristics
Evolutionary stage main sequence star
Spectral type G0V
B−V color index 0.32
J−H color index 0.246
J−K color index 0.411
Distance
824 ± 5 ly
(253 ± 2 pc)
Details
Gyr
Other designations
WASP-26, TYC 5839-876-1, DENIS J001824.6-151601, 2MASS J00182469-1516022, Gaia DR2 2416782701664155008[7]
Database references
SIMBADdata

WASP-26 is a yellow

Cetus
.

Star characteristics

WASP-26 is an old star close to leaving the main sequence and is part of a wide binary. The binary's projected separation is 3800 astronomical units, its companion star being a red dwarf with an effective temperature of 4600K and a visual magnitude of 13.6.[3] WASP-26 produces a large amount of ultraviolet light due to frequent flares, with an average ultraviolet flux close to the F7 class main-sequence star WASP-1.[8]

Planetary system

The "

Rossiter-McLaughlin effect failed to determine the inclination of the planetary orbit to the equatorial plane of the parent star due to high stellar noise,[5] but an initial constraint of -34+36
−26° was published in 2012.[10]

The WASP-26 planetary system[3][6]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 1.02±0.03 MJ 0.0400±0.0003 2.75660±0.00001 0 82.5±0.5° 1.216±0.047 RJ

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. Bibcode:2000A&A...355L..27H
    .
  3. ^
    S2CID 55114421
    .
  4. ^ A. Bonfanti, S. Ortolani, and V. Nascimbeni, "Age consistency between exoplanet hosts and field stars", 2016
  5. ^
    S2CID 31204371
    .
  6. ^
    S2CID 53641330
    .
  7. ^ "WASP-26". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-02-19.
  8. ^ Evgenya L. Shkolnik, "AN ULTRAVIOLET INVESTIGATION OF ACTIVITY ON EXOPLANET HOST STARS", 2013
  9. S2CID 55842630
    .
  10. S2CID 17174530


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