Near Earth Object Surveillance Satellite
| Mission type | Asteroid detection |
|---|---|
| Operator | CSA, DRDC |
| COSPAR ID | 2013-009D |
| SATCAT no. | 39089 |
| Website | neossat |
| Mission duration | Primary mission: 1 year Elapsed: 4 years, 2 months and 9 days |
| Spacecraft properties | |
| Bus | Multi-Mission Microsatellite Bus |
| Manufacturer | David Florida Laboratory, Spectro, Microsat Systems |
| Launch mass | 74 kg (163 lb) |
| Dimensions | 137 × 78 × 38 cm (54 × 31 × 15 in) |
| Power | 45 watts |
| Start of mission | |
| Launch date | February 25, 2013, 12:31 UTC |
| Rocket | PSLV-CA C20 |
| Launch site | Satish Dhawan FLP |
| Contractor | ISRO/Antrix |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Semi-major axis | 7,155.78 km (4,446.40 mi) |
| Perigee | 776 km (482 mi) |
| Apogee | 792 km (492 mi) |
| Inclination | 98.61 degrees |
| Period | 100.41 minutes |
| Mean motion | 14.34 |
| Epoch | January 24, 2015, 10:52:44 UTC |
The Near Earth Object Surveillance Satellite (NEOSSat) is a Canadian microsatellite using a 15-cm aperture f/5.88 Maksutov telescope similar to that on the MOST spacecraft, 3-axis stabilized with pointing stability of ~2 arcseconds in a ~100 second exposure. It is funded by the Canadian Space Agency (CSA) and Defence Research and Development Canada (DRDC), and will search for interior-to-Earth-orbit (IEO) asteroids, at between 45 and 55 degree solar elongation and +40 to -40 degrees ecliptic latitude.
NEOSSat is a suitcase-sized microsatellite measuring 137 × 78 × 38 centimetres (54 × 31 × 15 in), including telescope , and weighing 74 kilograms (163 lb). It is powered by gallium arsenide (GaAs) solar cells placed on all six sides of its frame; the entire spacecraft uses around 80 watts of power, with the bus core systems consuming an average of 45 watts. The spacecraft uses miniature reaction wheels for stabilization and attitude control, and magnetic torque rods to dump excess momentum by pushing against Earth's magnetic field, so no on-board fuel is required for operation.
NEOSSat is a descendent of Canada's earlier MOST satellite. It was built on the Multi-Mission Microsatellite Bus, which was created using data from the development of MOST. Its science payload includes a telescope of the same design as that on MOST, and uses spare CCD detectors from the MOST mission.
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