Deep Space Climate Observatory
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Artist's rendering of DSCOVR
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| Names | Triana | ||||||||||||
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| Mission type | Solar observation | ||||||||||||
| Operator | NASA / NOAA | ||||||||||||
| COSPAR ID | 2015-007A | ||||||||||||
| SATCAT no. | 40390 | ||||||||||||
| Website | www |
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| Mission duration | Planned: 5 years Elapsed: 2 years and 18 days |
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| Spacecraft properties | |||||||||||||
| Launch mass | 570 kg (1,257 lb) | ||||||||||||
| Dimensions | Undeployed: 1.4 × 1.8 m (54 × 72 in) | ||||||||||||
| Power | 600 W | ||||||||||||
| Start of mission | |||||||||||||
| Launch date | February 11, 2015, 23:03:02 UTC | ||||||||||||
| Rocket | Falcon 9 v1.1 | ||||||||||||
| Launch site | Cape Canaveral SLC-40 | ||||||||||||
| Contractor | SpaceX | ||||||||||||
| Orbital parameters | |||||||||||||
| Reference system | Heliocentric | ||||||||||||
| Regime | L1 point | ||||||||||||
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| Instruments | |
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| PlasMag | Plasma-Magnetometer |
| NISTAR | National Institute of Standards and Technology Advanced Radiometer |
| EPIC | Earth Polychromatic Imaging Camera |
| ES | Electron Spectrometer |
| PHA | Pulse Height Analyzer |
Deep Space Climate Observatory (DSCOVR; formerly known as Triana, unofficially known as GoreSat) is a NOAA Earth observation and space weather satellite launched by SpaceX on a Falcon 9 launch vehicle on February 11, 2015 from Cape Canaveral.
It was originally developed as a NASA satellite proposed in 1998 by then-Vice President Al Gore for the purpose of Earth observation. It is in a Lissajous orbit at the Sun-Earth L1 Lagrangian point, 1,500,000 km (930,000 mi) from Earth, to monitor variable solar wind condition, provide early warning of approaching coronal mass ejections and observe phenomena on Earth including changes in ozone, aerosols, dust and volcanic ash, cloud height, vegetation cover and climate. At this location it has a continuous view of the Sun and the sunlit side of the Earth. The satellite is orbiting the Sun-Earth L1 point in a six-month period, with a spacecraft-Earth-Sun angle varying from 4 to 15 degrees. It takes full-Earth pictures about every two hours and is able to process them faster than other Earth observation satellites.
DSCOVR started orbiting around L1 by June 8, 2015, just over 100 days after launch. After the spacecraft arrived on site and entered its operational phase, NASA began releasing near-real time images of Earth through the EPIC instrument's website.
Originally known as Triana, named after Rodrigo de Triana, the first of Columbus's crew to sight land in the Americas, the satellite's original purpose was to provide a near-continuous view of the entire Earth and make that live image available via the Internet. Gore hoped not only to advance science with these images, but also to raise awareness of the Earth itself, updating the influential Blue Marble photograph taken by Apollo 17. In addition to an imaging camera, a radiometer would take the first direct measurements of how much sunlight is reflected and emitted from the whole Earth (albedo). This data could constitute a barometer for the process of global warming. The scientific goals expanded to measure the amount of solar energy reaching Earth, cloud patterns, weather systems, monitor the health of Earth's vegetation, and track the amount of UV light reaching the surface through the ozone layer.
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