Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Columba |
Right ascension | 06h 17m 20.7485s [1] |
Declination | −38° 19′ 23.754″ [1] |
Apparent magnitude (V) | 11.10±0.08 [2] |
Characteristics | |
Evolutionary stage | subgiant [1] [2] |
Spectral type | G8 [3] |
B−V color index | 0.741±0.022 [4] |
J−K color index | 0.425±0.032 [4] |
Astrometry | |
Radial velocity (Rv) | −23.55±0.25 [1] km/s |
Proper motion (μ) |
RA: −17.469
mas/
yr
[1] Dec.: −27.292 mas/ yr [1] |
Parallax (π) | 3.4609 ± 0.0118 mas [1] |
Distance | 942 ± 3
ly (288.9 ± 1.0 pc) |
Details | |
Mass | 1.10+0.06 −0.04 [5] M☉ |
Radius | 1.76+0.11 −0.08 [5] R☉ |
Luminosity | 2.76 [1] L☉ |
Surface gravity (log g) | 4.01±0.03 [6] cgs |
Temperature | 5715±60 [6] K |
Metallicity [Fe/H] | 0.08±0.07 dex
[5] 0.28±0.05 [6] dex |
Rotational velocity (v sin i) | 2.8±0.5 [5] km/s |
Age | 8.3+1.3 −1.2 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
WASP-63 or Kosjenka, also known as CD-38 2551, is a single star with an exoplanetary companion in the southern constellation of Columba. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 11.1. [2] The distance to this system is approximately 942 light-years (289 parsecs) based on parallax measurements, but it is drifting closer with a radial velocity of −24 km/s.
The designation WASP-63 indicates that this was the 63rd star found to have a planet by the Wide Angle Search for Planets.
In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. [8] The approved names, proposed by a team from Croatia, were announced in June 2023. WASP-63 is named Kosjenka and its planet is named Regoč, after characters from Croatian Tales of Long Ago by Ivana Brlić-Mažuranić. [9]
This is a
G-type star with a
stellar classification of G8;
[3] the
luminosity class is currently unknown. The star is much older than the Sun at approximately 8.3+1.3
−1.2 billion years. WASP-63 is slightly enriched in heavy elements, having 120% of the solar abundance of iron.
[5] The stellar radius is enlarged for a G8 star,
[3] and models suggest it has
evolved into a
subgiant star.
[1] It has 1.1 times the mass of the Sun and is spinning with a
projected rotational velocity of 3 km/s.
[5]
In 2012 a transiting gas giant planet WASP-63b was detected on a tight, circular orbit. [3] Its equilibrium temperature is 1536±37 K, and measured dayside temperature is 1547±308 K. [10] The planet is similar to Saturn in mass but is highly inflated due to proximity to the parent star. The planetary atmosphere contains water and likely has a high cloud deck of indeterminate composition. [11]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b / Regoč | 0.339±0.03 MJ | 0.05417+0.00067 −0.00089 |
4.3780900±0.000006 | 0.026+0.040 −0.029 |
87.8±1.3 ° | 1.33±0.24 RJ |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Columba |
Right ascension | 06h 17m 20.7485s [1] |
Declination | −38° 19′ 23.754″ [1] |
Apparent magnitude (V) | 11.10±0.08 [2] |
Characteristics | |
Evolutionary stage | subgiant [1] [2] |
Spectral type | G8 [3] |
B−V color index | 0.741±0.022 [4] |
J−K color index | 0.425±0.032 [4] |
Astrometry | |
Radial velocity (Rv) | −23.55±0.25 [1] km/s |
Proper motion (μ) |
RA: −17.469
mas/
yr
[1] Dec.: −27.292 mas/ yr [1] |
Parallax (π) | 3.4609 ± 0.0118 mas [1] |
Distance | 942 ± 3
ly (288.9 ± 1.0 pc) |
Details | |
Mass | 1.10+0.06 −0.04 [5] M☉ |
Radius | 1.76+0.11 −0.08 [5] R☉ |
Luminosity | 2.76 [1] L☉ |
Surface gravity (log g) | 4.01±0.03 [6] cgs |
Temperature | 5715±60 [6] K |
Metallicity [Fe/H] | 0.08±0.07 dex
[5] 0.28±0.05 [6] dex |
Rotational velocity (v sin i) | 2.8±0.5 [5] km/s |
Age | 8.3+1.3 −1.2 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
WASP-63 or Kosjenka, also known as CD-38 2551, is a single star with an exoplanetary companion in the southern constellation of Columba. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 11.1. [2] The distance to this system is approximately 942 light-years (289 parsecs) based on parallax measurements, but it is drifting closer with a radial velocity of −24 km/s.
The designation WASP-63 indicates that this was the 63rd star found to have a planet by the Wide Angle Search for Planets.
In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. [8] The approved names, proposed by a team from Croatia, were announced in June 2023. WASP-63 is named Kosjenka and its planet is named Regoč, after characters from Croatian Tales of Long Ago by Ivana Brlić-Mažuranić. [9]
This is a
G-type star with a
stellar classification of G8;
[3] the
luminosity class is currently unknown. The star is much older than the Sun at approximately 8.3+1.3
−1.2 billion years. WASP-63 is slightly enriched in heavy elements, having 120% of the solar abundance of iron.
[5] The stellar radius is enlarged for a G8 star,
[3] and models suggest it has
evolved into a
subgiant star.
[1] It has 1.1 times the mass of the Sun and is spinning with a
projected rotational velocity of 3 km/s.
[5]
In 2012 a transiting gas giant planet WASP-63b was detected on a tight, circular orbit. [3] Its equilibrium temperature is 1536±37 K, and measured dayside temperature is 1547±308 K. [10] The planet is similar to Saturn in mass but is highly inflated due to proximity to the parent star. The planetary atmosphere contains water and likely has a high cloud deck of indeterminate composition. [11]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b / Regoč | 0.339±0.03 MJ | 0.05417+0.00067 −0.00089 |
4.3780900±0.000006 | 0.026+0.040 −0.029 |
87.8±1.3 ° | 1.33±0.24 RJ |