Giotto (spacecraft)

Giotto was a European robotic spacecraft mission from the European Space Agency. The spacecraft flew by and studied Halley's Comet and in doing so became the first spacecraft to make close up observations of a comet. On 13 March 1986, the spacecraft succeeded in approaching Halley's nucleus at a distance of 596 kilometers. It was named after the Early Italian Renaissance painter Giotto di Bondone. He had observed Halley's Comet in 1301 and was inspired to depict it as the star of Bethlehem in his painting Adoration of the Magi in the Scrovegni Chapel.

Giotto
Artist's concept of Giotto spacecraft
OperatorEuropean Space Agency
COSPAR ID1985-056A
SATCAT no.15875
WebsiteOfficial Site at ESA.int
Mission duration7 years and 1 month (launch to deactivation)
Spacecraft properties
Launch mass960 kg
Power196 W
Start of mission
Launch date11:23:00, 2 July 1985 (UTC) (1985-07-02T11:23:00Z)
RocketAriane 1
Launch siteGuiana Space Centre
End of mission
Deactivated23 July 1992 (1992-07-23)
Orbital parameters
Reference systemHeliocentric
Eccentricity0.17334
Perihelion altitude0.73 AU
Aphelion altitude1.04 AU
Inclination2.09°
Period304.6 days
Epoch10 July 1992, 15:18:43 UTC
Flyby of Comet Halley
Closest approach14 March 1986
Distance596 km (370 mi)
Flyby of Earth
Closest approach2 July 1990
Distance22,730 km (14,120 mi)
Flyby of Comet Grigg-Skjellerup
Closest approach10 July 1992
Distance200 km (120 mi)
Flyby of Earth
Closest approach1999
Distance1,000 km (620 mi)

Legacy ESA insignia for the Giotto mission  
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