Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
GRAIL
 Artist's interpretation of the GRAIL tandem spacecraft above the lunar surface. | |
| Names | GRAIL |
|---|---|
| Mission type | Lunar orbiters |
| Operator | NASA / JPL[1][2] |
| COSPAR ID | 2011-046A 2011-046B |
| SATCAT no. | 37801 37802 |
| Website | moon |
| Mission duration | 1 year, 3 months and 7 days |
| Spacecraft properties | |
| Bus | XSS-11[3] |
| Manufacturer | MIT Lockheed Martin |
| Launch mass | 202.4 kg (each)[4] |
| Dry mass | 132.6 kg (292 lb) |
| Power | (Solar array / Li-ion battery) |
| Start of mission | |
| Launch date | September 10, 2011, 13:08:52.775 UTC |
| Rocket | Delta II 7920H-10 D-356 |
| Launch site | Cape Canaveral SLC-17B |
| Contractor | United Launch Alliance |
| Entered service | December 31, 2011 (Ebb) January 1, 2012 (Flow) |
| End of mission | |
| Disposal | Deorbited |
| Decay date | December 17, 2012 |
| Orbital parameters | |
| Reference system | Selenocentric |
| Regime | Polar orbit[5] |
| Semi-major axis | 1,788.0 km (1,111.0 mi) |
| Periselene altitude | 25 km (16 mi) |
| Aposelene altitude | 86 km (53 mi) |
| Period | 113 minutes |
| Lunar impactor | |
| Spacecraft component | Ebb |
| Impact date | December 17, 2012, 22:28:51 UTC |
| Impact site | 75°36′30″N 33°24′15″E / 75.6083°N 33.4043°E |
| Lunar impactor | |
| Spacecraft component | Flow |
| Impact date | December 17, 2012, 22:29:21 UTC |
| Impact site | 75°39′01″N 33°09′51″E / 75.6504°N 33.1643°E |
| |
The Gravity Recovery and Interior Laboratory (GRAIL) was an American lunar science mission in NASA's Discovery Program which used high-quality gravitational field mapping of the Moon to determine its interior structure. The two small spacecraft GRAIL A (Ebb) and GRAIL B (Flow)[6][7] were launched on 10 September 2011 aboard a single launch vehicle: the most-powerful configuration of a Delta II, the 7920H-10.[1][8][9] GRAIL A separated from the rocket about nine minutes after launch, GRAIL B followed about eight minutes later. They arrived at their orbits around the Moon 25 hours apart.[10][11] The first probe entered orbit on 31 December 2011 and the second followed on 1 January 2012.[12] The two spacecraft impacted the Lunar surface on December 17, 2012.[11]
- ^ a b Cite error: The named reference
ulawas invoked but never defined (see the help page). - ^ Cite error: The named reference
grail_factsheetwas invoked but never defined (see the help page). - ^ Cite error: The named reference
tsr-20071231was invoked but never defined (see the help page). - ^ Cite error: The named reference
beyondwas invoked but never defined (see the help page). - ^ Cite error: The named reference
AboutGRAILwas invoked but never defined (see the help page). - ^ Cite error: The named reference
bozeman1was invoked but never defined (see the help page). - ^ Cite error: The named reference
ebbflowwas invoked but never defined (see the help page). - ^ Cite error: The named reference
ula2was invoked but never defined (see the help page). - ^ Cite error: The named reference
nasa20071211was invoked but never defined (see the help page). - ^ Cite error: The named reference
earthsky1was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
sf101-1was invoked but never defined (see the help page). - ^ Cite error: The named reference
nasa20111231was invoked but never defined (see the help page).
Previous Page Next Page
GRAIL (svemirske letjelice) BS Gravity Recovery and Interior Laboratory Catalan Gravity Recovery and Interior Laboratory Czech Gravity Recovery and Interior Laboratory German GRAIL Spanish GRAIL Finnish Gravity Recovery and Interior Laboratory French Gravity Recovery and Interior Laboratory GL GRAIL HE GRAIL Hungarian
