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DS-U2-GK
Part of DS
|  DS-U2-GK
 Credit: Yuzhnoye
 | 
Ukrainian earth magnetosphere satellite. Conducted complex geophysical studies of the upper atmosphere. Air density, auroral investigations. Astronomy, Magnetosphere satellite built by Yuzhnoye, Russia. Launched 1968 - 1970. Used DS Bus. 
 Status: Operational 1968.  First Launch: 1968-12-19.  Last Launch: 1970-06-13.  Number:  2 . Gross mass: 350 kg (770 lb). 
More at: DS-U2-GK. 
Family: 
Earth, 
Magnetosphere sat. 
Country: 
Ukraine. 
Launch Vehicles: 
Kosmos 2, 
R-12, 
Kosmos 11K63. 
Launch Sites: 
Plesetsk, 
Plesetsk LC133/1. 
Agency: 
MO, 
Yuzhnoye. 
Bibliography: 
2, 
6, 
99, 
12276. 
Photo Gallery
|  | Cosmos 261 Credit: Manufacturer Image
 | 
1968 December 19 - . 
23:55 GMT - . 
Launch Site: 
Plesetsk. 
Launch Complex: 
Plesetsk LC133/1. 
LV Family: 
R-12. 
Launch Vehicle: 
Kosmos 11K63. 
- Cosmos 261 - . 
 Payload: DS-U2-GK s/n 1. Mass: 347 kg (765 lb). Nation: Russia. 
Agency: MO. 
Program: DS. 
Class: Earth. 
 Type: Magnetosphere satellite. Spacecraft Bus: DS. 
Spacecraft: DS-U2-GK. 
 Completed Operations Date: 1969-02-12 .  Decay Date: 1969-02-12 .  USAF Sat Cat:  3624 .  COSPAR: 1968-117A. Apogee: 637 km (395 mi). Perigee: 206 km (128 mi). Inclination: 71.20 deg. Period: 93.00 min. Conducted complex geophysical studies of the upper atmosphere, including aiir density and auroral investigations.. 
1970 June 13 - . 
04:59 GMT - . 
Launch Site: 
Plesetsk. 
Launch Complex: 
Plesetsk LC133/1. 
LV Family: 
R-12. 
Launch Vehicle: 
Kosmos 11K63. 
- Cosmos 348 - . 
 Payload: DS-U2-GK s/n 2. Mass: 357 kg (787 lb). Nation: Russia. 
Agency: MO. 
Program: DS. 
Class: Earth. 
 Type: Magnetosphere satellite. Spacecraft Bus: DS. 
Spacecraft: DS-U2-GK. 
 Completed Operations Date: 1970-07-25 .  Decay Date: 1970-07-25 .  USAF Sat Cat:  4413 .  COSPAR: 1970-044A. Apogee: 598 km (371 mi). Perigee: 205 km (127 mi). Inclination: 71.00 deg. Period: 92.50 min. Conducted complex geophysical studies of the upper atmosphere. Air density, auroral investigations.. 
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