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Kilonova explosions typically release $\sim 10^{50-51}$ erg in kineticenergy, which is sufficient to constitute a kilonova remnant (KNR); however, ithas not yet been confirmed. In this work, we investigate the probableassociation between G4.8+6.2 and the guest star of AD 1163, which is recordedby the Korea ancient astronomers. Although the evidence available isinsufficient to draw a definite conclusion, it is at least theoreticallyself-consistent that the guest star of AD 1163 was a historical kilonovaassociated with G4.8+6.2, considering the possible short visible timescale ofAD 1163, the relatively high Galactic latitude of G4.8+6.2, and that G4.8+6.2is spatially coincident with the guest star of AD 1163. Further observation ofG4.8+6.2 is needed to test our hypothesis. If our interpretation is correct,our results indicate that young KNRs should have a large diameter and lowsurface brightness, unlike other young supernova remnants.

G4.8+6.2, a possible kilonova remnant?