Published September 8, 2025 | Version v1
Dataset Open

A decade of transit photometry for K2-19: revised system architecture

Description

Posterior samples

Posterior samples from the photodynamical modeling.
Filename: K2-19_Almenara2025_posterior.csv
Columns:
    G:  N-body gravitational constant (au^3 day^-2 M_Sun^-1)
    Tref: Reference time for the orbital elements (BJD_TDB)
    timestep: N-body time step (days)
    coordinate: Coordinate system
    m_s: Star mass (M_Sun)
    r_s: Star radius (au)
    m_p: Planet mass (M_Sun)
    r_p: Planet radius (au)
    a_p: Planet's semimajor axis (au)
    e_p: Planet's eccentricity 
    i_p: Planet's orbital inclination (degrees)
    w_p: Planet's argument of pericentre (degrees)
    Node_p: Planet's longitude of the ascending node (degrees)
    M_p: Planet's mean anomaly (degrees)

'p' is the planet number, ranging from 1 (the innermost planet) to n (the outermost planet):
    1: K2-19 d
    2: K2-19 b
    3: K2-19 c
    4: candidate K2-19 e

Transit forecast

Transit timing predictions derived from the photodynamical modeling.
Filename: K2-19_Almenara2025_forecast2035.csv
Columns: 
    1. Planet number (see the description of the posterior file)
    2. Epoch number of the transit
    3. Transit time (BJD_TDB) 
    4. Lower 68.3% credible interval (days)
    5. Upper 68.3% credible interval (days)

Light curves 

Transit observations of K2-19. 
Filename: K2-19_[Mid-transit UT date or start date for K2 and TESS]_[Telescope]_[Band].txt
Columns: 
    1. Mid-Exposure Time (BJD_TDB)
    2. Normalized Flux
    3. Normalized Flux Error
    4. Exposure Time (seconds) 

Additional columns for:
    CHEOPS : roll angle (degrees), background flux
    EulerCam :  point spread function centroid shifts (pixels), full width at half maximum (pixels), peak flux value (ADU), and airmass

Files

K2-19_2014-06-04_K2_Kepler.csv

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