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Designation of series of communications satellites launched by Japanese BS telecom. Medium-scale broadcasting satellites for experimental purposes and communications to Japanese home islands.

Family: Communications. Country: Japan. Spacecraft: Yuri, HS 376, AS 3000. Launch Vehicles: Delta 2914, N-2, H-1, Ariane 44L, Atlas I. Launch Sites: Cape Canaveral, Tanegashima, Kourou. Agency: NASDA, Arianespace, TSCJ, NHK.

1978 April 7 - . 22:01 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 2914.

Yuri 1 - . Payload: BSE-1. Mass: 678 kg (1,494 lb). Nation: Japan. Agency: NASDA. Program: BS. Class: Technology. Type: Communications technology satellite. Spacecraft: Yuri. Completed Operations Date: 1982-01-28 . USAF Sat Cat: 10792 . COSPAR: 1978-039A. Apogee: 35,868 km (22,287 mi). Perigee: 35,736 km (22,205 mi). Inclination: 11.70 deg. Period: 1,436.90 min.
Experimental comsat. Medium-scale broadcasting satellite for experimental purposes (BSE). Launch vehicle Delta 2914-140. Launch time 2201 GMT. Location 110 deg E. Characteristics of satellite: Weight approx 355 kg in an early stage in orbit. Configuration - box shaped satelli te with 2 solar array panels with overall span of 8.95m. Height 3.09m, width 1.32m, length 1.19m. 3-axis stabilized attitude control. Expected life 3 years. Positioned in geosynchronous orbit over the Indian Ocean at 110 deg E in 1978-1982 As of 4 September 2001 located at 44.59 deg E drifting at 0.116 deg E per day. As of 2007 Mar 11 located at 108.19E drifting at 0.031E degrees per day.

1984 January 23 - . 07:58 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-2.

Yuri 2A - . Payload: BS-2a. Mass: 670 kg (1,470 lb). Nation: Japan. Agency: NASDA. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. Completed Operations Date: 1989-07-01 . USAF Sat Cat: 14659 . COSPAR: 1984-005A. Apogee: 36,191 km (22,488 mi). Perigee: 36,072 km (22,414 mi). Inclination: 4.90 deg. Period: 1,453.80 min.
TV. BS-2a (Yuri-2a). Domestic satellite broadcasting; development of broadcasting satellite technology. Launch 0758 GMT. N launch vehicle flight no 12. Launching organization NASDA. Positioned in geosynchronous orbit at 110 deg E in 1984-1985; 108 deg E in 1985-1987; 110 deg E in 1987-1988 As of 28 August 2001 located at 69.57 deg E drifting at 4.403 deg W per day. As of 2007 Mar 10 located at 153.52W drifting at 4.395W degrees per day.

1986 February 12 - . 07:55 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-2.

Yuri 2B - . Payload: BS-2b. Mass: 677 kg (1,492 lb). Nation: Japan. Agency: NASDA. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. Completed Operations Date: 1991-10-24 . USAF Sat Cat: 16597 . COSPAR: 1986-016A. Apogee: 36,135 km (22,453 mi). Perigee: 35,996 km (22,366 mi). Inclination: 2.70 deg. Period: 1,450.40 min.
Stationed at 117 deg E. BS-2b (Yuri-2b). Domestic satellite broadcasting; development of broadcasting satellite technology. Launching organization NASDA. N launch vehicle flight no 14. Launch time 0755 GMT. Positioned in geosynchronous orbit at 110 deg E in 1986-1991 As of 5 September 2001 located at 13.60 deg W drifting at 3.524 deg W per day. As of 2007 Mar 11 located at 77.04E drifting at 3.551W degrees per day.

1990 February 22 - . 23:17 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L. FAILURE: Exploded 100 seconds after liftoff due to water line blockage. This was caused by a piece of cloth found in the first stage Viking engine water cooling system..

BS 2X - . Payload: BS 2X. Mass: 2,800 kg (6,100 lb). Nation: USA. Agency: Arianespace. Program: BS. Spacecraft: HS 376. Apogee: 9.00 km (5.50 mi).

1990 August 28 - . 09:05 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: H-1.

Yuri 3A - . Payload: BS-3a. Mass: 1,115 kg (2,458 lb). Nation: Japan. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. Completed Operations Date: 1998-04-20 . USAF Sat Cat: 20771 . COSPAR: 1990-077A. Apogee: 36,245 km (22,521 mi). Perigee: 36,157 km (22,466 mi). Inclination: 3.50 deg. Period: 1,457.30 min.
Japanese DBS; 110 deg E. Continuation of broadcasting services by BS-2; accommodations to increasing and diversifying demands for broadcasting; establishment of common technology necessary for broadcasting satellite. Launching organization NASDA. Launch time 0905 GMT. BS-3a 'Yuri -3a'. Positioned in geosynchronous orbit at 110 deg E in 1990-1998 As of 2 September 2001 located at 84.62 deg E drifting at 5.278 deg W per day. As of 2007 Mar 10 located at 83.70W drifting at 5.275W degrees per day.

1991 April 18 - . 23:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. LV Family: Atlas. Launch Vehicle: Atlas I. FAILURE: RL-10 Centaur engine turbopump failed at T+361 seconds; destroyed by range safety.. Failed Stage: U.

Yuri 3H - . Payload: BS-3H. Mass: 600 kg (1,320 lb). Nation: Japan. Agency: TSCJ. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. Decay Date: 1991-04-18 . Apogee: 175 km (108 mi).

1991 August 25 - . 08:40 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: H-1.

Yuri 3B - . Payload: BS-3b. Mass: 1,115 kg (2,458 lb). Nation: Japan. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. Completed Operations Date: 1999-04-05 . USAF Sat Cat: 21668 . COSPAR: 1991-060A. Apogee: 36,244 km (22,520 mi). Perigee: 36,171 km (22,475 mi). Inclination: 3.20 deg. Period: 1,457.70 min. TV; 110 deg E. Positioned in geosynchronous orbit at 110 deg E in 1991-1999 As of 3 September 2001 located at 91.59 deg E drifting at 5.350 deg W per day. As of 2007 Mar 9 located at 152.69E drifting at 5.334W degrees per day..

1994 July 8 - . 23:05 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L.

Yuri 3N - . Payload: BS-3N. Mass: 1,210 kg (2,660 lb). Nation: Japan. Agency: NHK. Manufacturer: Lockheed. Program: BS. Class: Communications. Type: Civilian communications satellite. Spacecraft: AS 3000. USAF Sat Cat: 23176 . COSPAR: 1994-040B. Apogee: 35,797 km (22,243 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.0500 deg. Period: 1,436.15 min. Stationed at 109.67 deg E. Positioned in geosynchronous orbit at 109 deg E in 1994-1999 As of 5 September 2001 located at 109.71 deg E drifting at 0.013 deg W per day. As of 2007 Mar 11 located at 109.92E drifting at 0.008W degrees per day..

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