We present nearly 500 days of observations of the tidal disruption event ASASSN-18pg , spanning from 54 days before peak light to 441 days after peak light .
Our dataset includes X-ray , UV , and optical photometry , optical spectroscopy , radio observations , and the first published spectropolarimetric observations of a TDE .
ASASSN-18pg was discovered on 2018 July 11 by the All-Sky Automated Survey for Supernovae ( ASAS-SN ) at a distance of d = 78.6 Mpc , and with a peak UV magnitude of m \simeq 14 it is both one of the nearest and brightest TDEs discovered to-date .
The photometric data allow us to track both the rise to peak and the long-term evolution of the TDE .
ASASSN-18pg peaked at a luminosity of L \simeq 2.2 \times 10 ^ { 44 } erg s ^ { -1 } , and its late-time evolution is shallower than a flux \propto t ^ { -5 / 3 } power-law model , similar to what has been seen in other TDEs .
ASASSN-18pg exhibited Balmer lines and spectroscopic features consistent with Bowen fluorescence prior to peak which remained detectable for roughly 225 days after peak .
Analysis of the two-component H \alpha profile indicates that , if they are the result of reprocessing of emission from the accretion disk , the different spectroscopic lines may be coming from regions between \sim 10 and \sim 60 light-days from the black hole .
No X-ray emission is detected from the TDE and there is no evidence of a jet or strong outflow detected in the radio .
Our spectropolarimetric observations give no strong evidence for significant asphericity in the emission region , with the emission region having an axis ratio of at least \sim 0.65 .