Dawn (spacecraft)

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Dawn Transparent.png
Airtist's renderin o the Dawn spacecraft.
Mission type Multi-target orbiter
Operator NASA
COSPAR ID 2007-043A
Wabsteid NASA
Mission duration ~9 years[1]
Spacecraft properties
Manufacturer Orbital Sciences · JPL (Jet Propulsion Laboratory) · UCLA (Varsity o Californie, Los Angeles)
BOL mass 1,240 kg (2,730 lb) (wet)[2]
Pouer 1300 W (Solar array) at 3 AU[2]
Start o mission
Launch date 27 September 2007 (2007-09-27) 11:34:00 UTC[3]
(10 years, 7 months and 25 days ago)
Rocket Delta II 7925H
Launch steid Cape Canaveral SLC-17B
Fleebi o Mars (Gravity assist)
Closest approach 17 Februar 2009 (2009-02-17)
(9 years, 3 months and 5 days ago)
Distance 549 km (341 mi)
4 Vesta orbiter
Orbital insertion 16 Julie 2011 (2011-07-16) 04:47 UTC[4]
(6 years, 10 months and 6 days ago)
Departit orbit 5 September 2012 (2012-09-05)
(5 years, 8 months and 17 days ago)
1 Ceres orbiter
Orbital insertion 6 Mairch 2015 (2015-03-06)[5]

Dawn logo.png
Dawn mission patch

Discovery program
← Deep Impact Kepler

Dawn is a space probe launched bi NASA in September 2007 wi the mission o studyin twa o the three kent protoplanets o the asteroid belt, Vesta an Ceres. It is currently in orbit aboot its seicont tairget, the dwarf planet Ceres. Dawn is the first spacecraft tae orbit twa extraterrestrial bouks,[6] the first spacecraft tae veesit either Vesta or Ceres, an an aa the first tae visit a dwarf planet, arrivin at Ceres in Mairch 2015, a few months afore New Horizons flew by Pluto in Julie 2015.

Dawn entered Vesta orbit on Julie 16, 2011, an completit a 14-month survey mission afore leavin for Ceres in late 2012.[7][8]

References[eedit | eedit soorce]

  1. "GSpace Topics: Dawn". Planetary Society. Retrieved November 9, 2013. 
  2. 2.0 2.1 Rayman, Marc; Fraschetti, Thomas C.; Raymond, Carol A.; Russell, Christopher T. (Aprile 5, 2006). "Dawn: A mission in development for exploration of main belt asteroids Vesta and Ceres" (PDF). Acta Astronautica. 58 (11): 605–616. Bibcode:2006AcAau..58..605R. doi:10.1016/j.actaastro.2006.01.014. Retrieved Aprile 14, 2011. 
  3. "Dawn Spacecraft Successfully Launched". NASA. September 27, 2007. Retrieved November 9, 2013. 
  4. "NASA's Dawn Spacecraft Begins Science Orbits of Vesta". NASA. August 1, 2011. Retrieved August 6, 2011. 
  5. Boyle, Alan (Mairch 6, 2015). "Dawn Spacecraft Slips Quietly Into Orbit Around Dwarf Planet Ceres". NBCNews.com. NBCUniversal Media, LLC. Retrieved Mairch 11, 2015. 
  6. Rayman, Marc (Aprile 8, 2015). Now Appearing At a Dwarf Planet Near You: NASA's Dawn Mission to the Asteroid Belt (Speech). Silicon Valley Astronomy Lectures. Foothill College, Los Altos, CA. 
  7. "NASA's Dawn Spacecraft Hits Snag on Trip to 2 Asteroids". Space.com. August 15, 2012. Retrieved August 27, 2012. 
  8. "Dawn Gets Extra Time to Explore Vesta". NASA. Aprile 18, 2012. Retrieved Aprile 24, 2012.