Launch Time
Wed Apr 17, 2019 20:46 UTC

Last flight of Antares 230.


Antares 230
Image Credit: NASA
Status: Retired
Price: $85.0 million
Liftoff Thrust: 3,844 kN
Payload to LEO: 7,000 kg
Stages: 2
Strap-ons: 0
Rocket Height: 41.9 m
Fairing Diameter: 3.9 m
Fairing Height: 9.9 m

Mission Details


Cygnus NG-11 (Northrop Grumman-11) is a cargo resupply mission of the Northrop Grumman Cygnus spacecraft to the International Space Station under the Commercial Resupply Services (CRS) contract with NASA.

Northrop Grumman and NASA jointly developed a new space transportation system to provide commercial cargo resupply services to the International Space Station. The Cygnus cargo ship consists of two parts, a service module built in the USA based on the GEOStar platform, and a pressurized module, manufactured in France and Italy by Thales Alenia. The cargo is sent into orbit by a launcher specially developed for this purpose.

Antares has a first stage based on Energiya lateral blocks, made in Ukraine by Yuzhnoye. It was initially powered by two NK-33s, built in the 1960s for the Soviet N1 lunar launcher, before being replaced by RD-181s, derived from the RD-170s installed on Energiya and Zenit. The second stage, a Castor-30, is made in the USA, by Northrop Grumman.

CRS NG-11 was captured by RMS on 19/04/2019 at 09:28 UTC and berthed to the Nadir port of the Unity module of the International Space Station on 19/04/2019 at 11:31 UTC. Its stay on the ISS was 109 days. It was unberthed on 06/08/2019 at 13:30 UTC and released by RMS on 06/08/2019 at 16:15 UTC. It deorbited on 06/12/2019 at 15:28 UTC.

Payloads: 1
Total Mass: 3,436.0 kg
Low Earth Orbit


LP-0A, Wallops Flight Facility, Virginia, USA



25th orbital launch attempt


10th mission
1st mission of 2019
9th successful mission
5th consecutive successful mission