Intelsat IS-21 | Roscosmos | Zenit-3SL | Odyssey

Intelsat IS-21

LAUNCH WINDOW

19 Aug 2012

06:54 AM UTC

Drawing of a calendar and a clock

ORBIT

GTO

a path of a rocket

LAUNCH SITE

Odyssey

California, United States

VEHICLE

Zenit-3SL

Operated by: Roscosmos

Image of the Zenit-3SL rocket

Related Launches

SpaceX's Falcon 9 vehicle

TRACERS A [SMEX 16A], TRACERS B [SMEX 16B]

Apr 2025

Falcon 9 - SpaceX

Vandenberg (United States)

LEO

SpaceX's Falcon 9 vehicle

Bandwagon-4

May 2025

Falcon 9 - SpaceX

LEO

SpaceX's Falcon 9 vehicle

Transporter-15

Q4 2025

Falcon 9 - SpaceX

SSO (500 - 600 km)

SpaceX's Falcon 9 vehicle

Transporter-16

Feb 2026

Falcon 9 - SpaceX

SSO

SpaceX's Falcon 9 vehicle

Transporter-17

Jun 2026

Falcon 9 - SpaceX

SSO

Avio's Vega C vehicle

Mid-Inclination Piggyback 1

Q2 2026

Vega C - Avio

Kourou (French Guiana)

LEO (520 - 570 km)