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Track SENTINEL 1A now!
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SENTINEL 1A is classified as:

NORAD ID: 39634
Int'l Code: 2014-016A
Perigee: 701.9 km
Apogee: 703.9 km
Inclination: 98.2 °
Period: 98.7 minutes
Semi major axis: 7073 km
RCS: Unknown
Launch date: April 3, 2014
Source: European Space Agency (ESA)

The mission is the first of six families of dedicated missions that will make up the core of Europe's Copernicus environmental monitoring network. Copernicus will provide operational information on the world's land surfaces, oceans and atmosphere to support environmental and security policymaking and the needs of individual citizens and service providers. Designed as a two-satellite constellation - Sentinel-1A and -1B - the C-band radar mission will provide all-weather day-and-night imagery of land and ocean surfaces of Europe, Canada and the polar regions in near-real time. Equipped with a powerful 'synthetic aperture radar,' it will ensure continuity with the European Envisat satellite, which stopped working in 2012 after 10 years of service. The technology is based on a long heritage of radar satellites, starting with ERS-1 23 years ago. In addition to transmitting data to a number of ground stations around the world for rapid dissemination, Sentinel-1 is also equipped with a laser terminal to transmit data via European Data Relay System satellites in geostationary orbit for continual data delivery.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 39634U 14016A   18081.04160614  .00000005  00000-0  10840-4 0  9999
2 39634  98.1813  89.7011 0001468  79.1519 280.9858 14.59199125211217
Source of the keplerian elements: AFSPC