HAT-P-38b

HAT-P-38b/Hiisi
HAT-P-38b (grey) compared to Jupiter.
Discovery[1]
Discovered bySato et. al. (HATNet)
Discovery dateOctober 2012
Transit
Orbital characteristics[1]
Periastron0.04943 AU
Apoastron0.05519 AU
0.05231+0.00085
−0.00089 AU[2]
Eccentricity<0.055[2]
4.6403288±0.0000011 d[3]
Inclination88.3°±0.7°
240°±104°
Semi-amplitude35.4±2.4 km/s
StarHAT-P-38
Physical characteristics[1]
0.825+0.092
−0.063 RJ
Mass0.267±0.020 MJ
Mean density
0.59 ± 0.16 g/cm3
9.77±0.26 m/s2
Temperature1,082 ± 55 K (808.9 ± 55.0 °C; 1,487.9 ± 99.0 °F)

HAT-P-38b, formally named Hiisi, is a transiting exoplanet orbiting the G-type star HAT-P-38 821 light-years from the Solar System in the constellation Triangulum.

  1. ^ a b c Cite error: The named reference Sato2012 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Bonomo2017 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Kokori2022 was invoked but never defined (see the help page).