K2-288

Last updated
K2-288
Observation data
Epoch J2000       Equinox J2000
Constellation Taurus [1]
Right ascension 03h 41m 46.43s [2]
Declination +18° 16′ 08.0″ [2]
Characteristics
Spectral type M2 V [2] + M3 V [2]
Orbit [2]
PrimaryK2-288 A
CompanionK2-288 B
Semi-major axis (a)55 AU
Details [2]
K2-288 A
Mass 0.52±0.02  M☉
Radius 0.45±0.03  R☉
Surface gravity (log g)4.85±0.03  cgs
Temperature 3584±205  K
Metallicity [Fe/H]−0.29±0.09  dex
K2-288 B
Mass 0.33±0.02  M☉
Radius 0.32±0.03  R☉
Surface gravity (log g)4.96±0.02  cgs
Temperature 3341±276  K
Metallicity [Fe/H]−0.21±0.09  dex
Database references
SIMBAD data

K2-288 is a binary star system consisting of two red dwarfs. The companion star, K2-288B, is known to host a single planet, K2-288Bb.

Contents

Planetary System

In January 2019, it was announced that a team of citizen scientists had discovered a planet orbiting K2-288B. [2]

The K2-288 planetary system [2]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b —0.164 ± 0.0331.393463+0.000067
−0.000069		—89.81+0.13
−0.17 ° 		1.90 ± 0.3  R🜨

See also

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 Feinstein, Adina D.; et al. (7 January 2019). "K2-288Bb: A Small Temperate Planet in a Low-mass Binary System Discovered by Citizen Scientists" (PDF). The Astronomical Journal . 157 (2): 40. arXiv: 1902.02789 . Bibcode:2019AJ....157...40F. doi: 10.3847/1538-3881/aafa70 . hdl:1721.1/121222.
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