K2-24

K2-24
Observation data
Epoch J2000      Equinox J2000
Constellation Scorpius[1]
Right ascension 16h 10m 17.6977s[2]
Declination −24° 59′ 25.261″[2]
Apparent magnitude (V) 11.068±0.110[3]
Characteristics
Spectral type G3V[4]
Apparent magnitude (J) 9.635±0.024[5]
Apparent magnitude (H) 9.294±0.022[5]
Apparent magnitude (K) 9.180±0.021[5]
Variable type Planetary transit[4]
Astrometry
Radial velocity (Rv)1.18(32)[2] km/s
Proper motion (μ) RA: −59.891(21)[2] mas/yr
Dec.: −58.702(14)[2] mas/yr
Parallax (π)5.8273 ± 0.0169 mas[2]
Distance560 ± 2 ly
(171.6 ± 0.5 pc)
Details[6]
Mass1.041+0.017
−0.016
 M
Radius1.185±0.011 R
Surface gravity (log g)4.48±0.03 cgs
Temperature5726±65 K
Metallicity [Fe/H]0.41±0.05 dex
Age4.9±1.7 Gyr
Other designations
Gaia DR2 6049750234317822208, EPIC 203771098, TYC 6784-837-1, 2MASS J16101770-2459251[7]
Database references
SIMBADdata

K2-24 (also known as EPIC 203771098) is a metal-rich G3-type main sequence star larger and more massive than the Sun, located 560 light-years (172 parsecs) away in the constellation Scorpius. Two confirmed transiting exoplanets are known to orbit this star.[4] An attempt to detect stellar companions using adaptive optics imaging at the Keck telescope was negative[4] however later observations using lucky imaging at the Danish 1.54 m telescope at La Silla Observatory detected a possible companion at 3.8 arcseconds distance from K2-24. This candidate companion being over 8 magnitudes fainter than K2-24 and with a color temperature of 5400 Kelvin, is inconsistent with a bound main sequence companion.[8]

  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 Gaia EDR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference APASS DR9 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Petigura2016 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Nascimbeni2024 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).
  8. ^ Cite error: The named reference Evans2018 was invoked but never defined (see the help page).