Lunar Prospector

Lunar Prospector
Lunar Prospector
Mission typeLunar orbiter
OperatorNASA
COSPAR ID1998-001A Edit this at Wikidata
SATCAT no.25131
Mission duration570 days
Spacecraft properties
BusLM-100
ManufacturerLockheed Martin
Launch mass296.4 kilograms (653 lb)[1]
Dry mass126 kilograms (278 lb)
Power202.0 W
Start of mission
Launch dateJanuary 7, 1998, 02:28:44 (1998-01-07UTC02:28:44Z) UTC[1]
RocketAthena II
Launch siteCape Canaveral SLC-46
ContractorLockheed Martin Space Systems
End of mission
DisposalDeorbited (Moon impact)
Decay dateJuly 31, 1999, 09:52:02 (1999-07-31UTC09:52:03Z) UTC
Orbital parameters
Reference systemSelenocentric
Eccentricity0.00046
Periselene altitude99.45 kilometers (61.80 mi)
Aposelene altitude101.2 kilometers (62.9 mi)
Inclination90.55 degrees
Period117.9 minutes
EpochJanuary 16, 1998[1]
Lunar orbiter
Orbital insertionJanuary 11, 1998, 10:28 UTC
Impact site87°42′S 42°06′E / 87.7°S 42.1°E / -87.7; 42.1
Orbits~7060
Instruments
Gamma ray spectrometer (GRS)
Lunar Prospector neutron spectrometer (NS)
Alpha particle spectrometer (APS)
Doppler gravity experiment (DGE)
Magnetometer (MAG)
Electron reflectometer (ER)

Official insignia of the Lunar Prospector mission

Lunar Prospector was the third mission selected by NASA for full development and construction as part of the Discovery Program.[2] At a cost of $62.8 million, the 19-month mission was designed for a low polar orbit investigation of the Moon, including mapping of surface composition including lunar hydrogen deposits, measurements of magnetic and gravity fields, and study of lunar outgassing events. The mission ended July 31, 1999, when the orbiter was deliberately crashed into a crater near the lunar south pole, after the presence of hydrogen was successfully detected.[3][4]

Data from the mission allowed the construction of a detailed map of the surface composition of the Moon, and helped to improve understanding of the origin, evolution, current state, and resources of the Moon. Several articles on the scientific results were published in the journal Science.[5][6]

Lunar Prospector was managed by NASA Ames Research Center with the prime contractor Lockheed Martin. The Principal Investigator for the mission was Alan Binder. His personal account of the mission, Lunar Prospector: Against all Odds, is highly critical of the bureaucracy of NASA overall, and of its contractors.[7]

In 2013 an unidentified object was discovered in an unstable orbit around the Earth, and assigned the provisional number WT1190F. After it crashed into the Indian Ocean it was identified as probably the translunar injector of Lunar Prospector.[8]

  1. ^ a b c "Lunar Prospector". NASA Space Science Data Coordinated Archive. Archived from the original on 2019-01-15. Retrieved 2023-01-09.
  2. ^ "NASA - NSSDCA - Spacecraft - Details". nssdc.gsfc.nasa.gov. Archived from the original on 2019-08-12. Retrieved 2018-07-04.
  3. ^ "Eureka! Ice Found At Lunar Poles". NASA. Archived from the original on 2020-08-03. Retrieved 2018-07-04.
  4. ^ "Ice on the Moon". nssdc.gsfc.nasa.gov. Archived from the original on 2019-10-24. Retrieved 2018-07-04.
  5. ^ A. S. Konopliv; A. B. Binder; L. L. Hood; A. B. Kucinskas; W. L. Sjogren; J. G. Williams (1998). "Improved Gravity Field of the Moon from Lunar Prospector". Science. 281 (5382): 1476–80. Bibcode:1998Sci...281.1476K. doi:10.1126/science.281.5382.1476. PMID 9727968.
  6. ^ Binder, Alan B. (1998-09-04). "Lunar Prospector: Overview". Science. 281 (5382): 1475–1476. Bibcode:1998Sci...281.1475B. doi:10.1126/science.281.5382.1475. ISSN 0036-8075. PMID 9727967.
  7. ^ Binder, Alan B. (2005). Lunar Prospector: Against all Odds. Tucson: Ken Press. p. 1181. ISBN 978-1-928771-31-9. OCLC 61137782.
  8. ^ Berger, Eric (2016-01-14). "Fiery space debris that hit Earth in November likely from Moon rocket". Ars Technica. Archived from the original on 2019-03-24. Retrieved 2019-03-24.