Dawn (spacecraft)

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Dawn
Dawn spacecraft model.png
Airtist's renderin o the Dawn spacecraft.
Mission teepMulti-target orbiter
OperatorNASA
COSPAR ID2007-043A
SATCAT no.32249Eedit this on Wikidata
WabsteixNASA
NASA JPL
Mission duration~9 years[1]
Spacecraft properties
ManufacturerOrbital Sciences · JPL (Jet Propulsion Laboratory) · UCLA (Varsity o Californie, Los Angeles)
BOL mass1,240 kg (2,730 lb) (wet)[2]
Pouer1300 W (Solar array) at 3 AU[2]
Stairt o mission
Launch dateSeptember 27, 2007 (2007-09-27) 11:34:00 UTC[3]
(12 years, 1 month and 27 days ago)
RocketDelta II 7925H
Launch steidCape Canaveral SLC-17B
Fleebi o Mars (Gravity assist)
Closest approachFebruar 17, 2009 (2009-02-17)
(10 years, 9 months and 6 days ago)
Distance549 km (341 mi)
4 Vesta orbiter
Orbital insertionJulie 16, 2011 (2011-07-16) 04:47 UTC[4]
(8 years, 4 months and 7 days ago)
Departit orbitSeptember 5, 2012 (2012-09-05)
(7 years, 2 months and 18 days ago)
1 Ceres orbiter
Orbital insertionMairch 6, 2015 (2015-03-06)[5]
Dawn logo.png
Dawn mission patch  

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. (April 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 April 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 (March 6, 2015). "Dawn Spacecraft Slips Quietly Into Orbit Around Dwarf Planet Ceres". NBCNews.com. NBCUniversal Media, LLC. Retrieved March 11, 2015. 
  6. Rayman, Marc (April 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. April 18, 2012. Retrieved April 24, 2012.