Location of HAT-P-36 (circled) within
Canes Venatici | |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Canes Venatici [1] |
Right ascension | 12h 33m 03.9061s [2] |
Declination | +44° 54′ 55.196″ [2] |
Apparent magnitude (V) | 12.26 |
Characteristics | |
Spectral type | G |
Astrometry | |
Radial velocity (Rv) | −16.434 km/s |
Proper motion (μ) |
RA: −11.622(8)
mas/
yr
[2] Dec.: 8.138(10) mas/ yr [2] |
Parallax (π) | 3.4055 ± 0.0110 mas [2] |
Distance | 958 ± 3
ly (293.6 ± 0.9 pc) |
Details | |
Mass | 1.022 ± 0.049 M☉ |
Radius | 1.096 ± 0.056 R☉ |
Temperature | 5580 ± 100.0 K |
Metallicity [Fe/H] | 0.26 ± 0.08 dex |
Age | 6.6 ± 1.8 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HAT-P-36, also referred to as Tuiren [4] is a 12th magnitude G-type main-sequence star estimated to be approximately 958 light-years away from Earth [2] in the constellation Canes Venatici. HAT-P-36 is too faint to be seen with the naked eye, but it is possible to view it with binoculars or a small telescope. In 2012 a hot Jupiter-type exoplanet was discovered orbiting HAT-P-36 with an orbital period of about 1.3 Earth days. [5] In December 2019, HAT-P-36 was named Tuiren and its planetary companion, HAT-P-36b, was named Bran as a result of Ireland's contribution to the 2019 NameExoWorlds campaign. [6] Bran has a mass approximately 1.8 times that of Jupiter and a radius 1.2 times larger.
HAT-P-36 and its planet are named after characters from The Birth of Bran, a story in the book Irish Fairy Tales by James Stephens. The book is a re-telling of various stories from Irish folklore. Tuiren was the aunt of the mythical hero Fionn mac Cumhaill and was turned into a hound by the fairy Uchtdealbh after Tuiren married her husband. Bran and Sceólan were the two puppies mothered by Tuiren while she was a dog. They were cousins of Fionn mac Cumhaill. The names were proposed by John Murphy, a teacher at Regina Mundi College, Cork. [8]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b (Bran) | ≥1.832±0.099 MJ | 0.0238±0.0004 | 1.327347±0.000003 | 0.063±0.032 | 86±1.3 ° | 1.264±0.071 RJ |
HAT-P-36b (Bran) was discovered in 2012 by the HATNet Project using the transit method. [5] A search for transit timing variation did not result in detection of additional planets in the system as at 2021. [10] Surprisingly, a planetary orbital period increase by 0.014 seconds per year was detected by 2021. [11]
Jupiter | HAT-P-36b (Bran) |
---|---|
Location of HAT-P-36 (circled) within
Canes Venatici | |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Canes Venatici [1] |
Right ascension | 12h 33m 03.9061s [2] |
Declination | +44° 54′ 55.196″ [2] |
Apparent magnitude (V) | 12.26 |
Characteristics | |
Spectral type | G |
Astrometry | |
Radial velocity (Rv) | −16.434 km/s |
Proper motion (μ) |
RA: −11.622(8)
mas/
yr
[2] Dec.: 8.138(10) mas/ yr [2] |
Parallax (π) | 3.4055 ± 0.0110 mas [2] |
Distance | 958 ± 3
ly (293.6 ± 0.9 pc) |
Details | |
Mass | 1.022 ± 0.049 M☉ |
Radius | 1.096 ± 0.056 R☉ |
Temperature | 5580 ± 100.0 K |
Metallicity [Fe/H] | 0.26 ± 0.08 dex |
Age | 6.6 ± 1.8 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HAT-P-36, also referred to as Tuiren [4] is a 12th magnitude G-type main-sequence star estimated to be approximately 958 light-years away from Earth [2] in the constellation Canes Venatici. HAT-P-36 is too faint to be seen with the naked eye, but it is possible to view it with binoculars or a small telescope. In 2012 a hot Jupiter-type exoplanet was discovered orbiting HAT-P-36 with an orbital period of about 1.3 Earth days. [5] In December 2019, HAT-P-36 was named Tuiren and its planetary companion, HAT-P-36b, was named Bran as a result of Ireland's contribution to the 2019 NameExoWorlds campaign. [6] Bran has a mass approximately 1.8 times that of Jupiter and a radius 1.2 times larger.
HAT-P-36 and its planet are named after characters from The Birth of Bran, a story in the book Irish Fairy Tales by James Stephens. The book is a re-telling of various stories from Irish folklore. Tuiren was the aunt of the mythical hero Fionn mac Cumhaill and was turned into a hound by the fairy Uchtdealbh after Tuiren married her husband. Bran and Sceólan were the two puppies mothered by Tuiren while she was a dog. They were cousins of Fionn mac Cumhaill. The names were proposed by John Murphy, a teacher at Regina Mundi College, Cork. [8]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b (Bran) | ≥1.832±0.099 MJ | 0.0238±0.0004 | 1.327347±0.000003 | 0.063±0.032 | 86±1.3 ° | 1.264±0.071 RJ |
HAT-P-36b (Bran) was discovered in 2012 by the HATNet Project using the transit method. [5] A search for transit timing variation did not result in detection of additional planets in the system as at 2021. [10] Surprisingly, a planetary orbital period increase by 0.014 seconds per year was detected by 2021. [11]
Jupiter | HAT-P-36b (Bran) |
---|---|