19P/Borrelly
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| Perihelion distance at recent epochs[1] | |||||||
| Epoch | Perihelion (AU) | ||||||
|---|---|---|---|---|---|---|---|
| 2028 | 1.310[2] | ||||||
| 2022 | 1.306 | ||||||
| 2015 | 1.349 | ||||||
| 2008 | 1.355 | ||||||
Comet Borrelly Template:IPAc-en or Borrelly's Comet (official designation: 19P/Borrelly) is a comet with a period of 6.85 years that was visited by the spacecraft Deep Space 1 in 2001. The comet last came to perihelion (closest approach to the Sun) on February 1, 2022[1][3] and will next come to perihelion on December 11, 2028.[2]
| Date & time of closest approach |
Earth distance (AU) |
Sun distance (AU) |
Velocity wrt Earth (km/s) |
Velocity wrt Sun (km/s) |
Uncertainty region (3-sigma) |
Reference |
|---|---|---|---|---|---|---|
| 2028-Dec-05 19:12 ± 6 min | Template:Convert | Template:Convert | 17.3 | 33.3 | ± 41 thousand km | Horizons |
Deep Space 1 returned images of the comet's nucleus from 3400 kilometers away. At 45 meters per pixel, it was the highest resolution view ever seen of a comet up until that time.[4]
Discovery
The comet was discovered by Alphonse Borrelly during a routine search for comets at Marseille, France on December 28, 1904.
Exploration
Deep Space 1 flyby
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On September 21, 2001 the spacecraft Deep Space 1, which was launched to test new equipment in space, performed a flyby of Borrelly. It was steered toward the comet during the extended mission of the craft, and presented an unexpected bonus for the mission scientists. Despite the failure of a system that helped determine its orientation, Deep Space 1 managed to send back to Earth what were, at the time, the best images and other science data from a comet.
References
External links
- http://jcometobs.web.fc2.com/pcmtn/0019p.htm
- 19P – Gary W. Kronk's Cometography
- Elements and Ephemeris for 19P/Borrelly – Minor Planet Center