C/1652 Y1

C/1652 Y1 was a naked-eye comet observed, among others, by Jan van Riebeeck. It was first spotted on December 14, 1652, in Mexico City, by Novohispano friar Diego Rodríguez,^[2] and next sighted on December 16, 1652, by Dutch observers at Pernambuco (Brazil).^[3]

C/1652 Y1

Discovery
Discovered by	Diego Rodríguez
Discovery date	14 December 1652
Orbital characteristics[1]
Epoch	13 November 1652 (JD 2324757.653)
Observation arc	18 days
Number of observations	54
Perihelion	0.8475 AU
Eccentricity	~1.000
Inclination	79.461°
Longitude of ascending node	93.001°
Argument of periapsis	300.19°
Last perihelion	13 November 1652

As of June 2008^[update] the comet was about 280 AU from the Sun (very approximate due to poorly determined orbit).^[1]