TESS Discovery of a Super-Earth and Three Sub-Neptunes Hosted by the Bright, Sun-like Star HD 108236

We report the discovery and validation of four extrasolar planets hosted by nearby, bright, Sun-like (G3V) star HD~108236 using data from Transiting Exoplanet Survey Satellite (TESS). present transit photometry, reconnaissance precise Doppler spectroscopy as well high-resolution imaging, to validate planetary nature objects transiting HD~108236, also known TESS Object Interest (TOI) 1233. The innermost planet is a possibly-rocky super-Earth with period $3.79523_{-0.00044}^{+0.00047}$ days has radius $1.586\pm0.098$ $R_\oplus$. outer are sub-Neptunes, potential gaseous envelopes, having radii $2.068_{-0.091}^{+0.10}$ $R_\oplus$, $2.72\pm0.11$ $3.12_{-0.12}^{+0.13}$ $R_\oplus$ periods $6.20370_{-0.00052}^{+0.00064}$ days, $14.17555_{-0.0011}^{+0.00099}$ $19.5917_{-0.0020}^{+0.0022}$ respectively. With V K$_{\rm s}$ magnitudes 9.2 7.6, respectively, bright host makes favorable targets for mass measurements and, potentially, atmospheric characterization via transmission spectroscopy. brightest in visual (V) band or more exoplanets. discovered span broad range equilibrium temperatures, share common history insolation ($R_\star = 0.888 \pm 0.017$ R$_\odot$, $T_{\rm eff} 5730 50$ K), making HD 108236 an exciting, opportune cosmic laboratory testing models formation evolution.