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Zenit-3SLBF

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AKA: Zenit-3F. Status: Active. First Launch: 2011-01-20. Last Launch: 2017-12-26. Number: 4 .

• Elektro-L - . Mass: 1,700 kg (3,700 lb). Nation: Russia. Class: Earth. Type: Weather satellite. Spacecraft: Navigator bus. USAF Sat Cat: 37344 . COSPAR: 2011-001A. Apogee: 35,796 km (22,242 mi). Perigee: 35,285 km (21,925 mi). Inclination: 0.40 deg. Period: 1,423.50 min. First launch of a new generation Russian geosynchronous weather satellite using the Lavochkin Navigator bus. Equipped with a scanning visible/infrared radiometer, solar environment monitor, and a COSPAS-SARSAT search-and-rescue transponder system..

• Spektr R - . Mass: 3,660 kg (8,060 lb). Nation: Russia. Class: Astronomy. Type: Radio astronomy satellite.. Spacecraft: Navigator bus. USAF Sat Cat: 37755 . COSPAR: 2011-037A. Apogee: 303,108 km (188,342 mi). Perigee: 27,499 km (17,087 mi). Inclination: 58.45 deg. Period: 11,799.00 min. Russian astronomical space observatory. Carried 10m diameter radio telescope observing at 92, 18, 6 and 1.35 cm wavelengths; solar wind and cosmic dust detectors; and laser corner reflectors for tracking..

• Elektro-L No. 2 - . Nation: Russia. Class: Earth. Type: Weather satellite. Spacecraft: Elektro. USAF Sat Cat: 41105 . COSPAR: 2015-074A. Apogee: 35,792 km (22,240 mi). Perigee: 35,781 km (22,233 mi). Inclination: 0.0800 deg. Period: 1,436.09 min.

  Russia launched a Ukrainian-built Zenit-2SB vehicle with an NPO Lavochkin 'Fregat-SB' upper stage carrying the Elektro-L No. 2 weather satellite to GEO. The Zenit-2SB second stage reached a 164 x 539 km x 51.4 deg parking orbit at 1352 UTC. The Elektro-L/Fregat-SB separated; after a first Fregat burn to 271 x 4277 km at 1500 UTC, the SBB drop tank was jettisoned. A second burn at 1711 UTC put the vehicle in geotransfer orbit, and a third burn at 2232 UTC circularized the orbit at apogee. Fregat separated and later made a fourth burn to graveyard orbit, leaving Elektro-L in the geosynchronous region.

• Angosat 1 - . Nation: Angola. USAF Sat Cat: 43087 . COSPAR: 2017-086A. Apogee: 36,102 km (22,432 mi). Perigee: 35,973 km (22,352 mi). Inclination: 0.95 deg. Period: 1,448.95 min. See AngoSat 1. ..