Comet Tebbutt (C/1861 J1) is a long-period comet discovered on 13 May 1861 by Australian amateur astronomer John Tebbutt (1834–1916) and also known as the Great Comet of 1861. It reached perihelion on 12 June and was 0.13 astronomical units from Earth on June 30 when our planet passed through its tail. At its brightest, Comet Tebbutt was said to have outshone every star and planet except for Venus and to have had a tail 100° long stretching right across the north polar region of the sky.