Trumpet-F/O-2 2 (USA 278, NROL 42, SBIRS HEO-4)

USA

Int. spacecraft nº:

US spacecraft nº:

Launch data:

Designation	42941 / 17056A
Launch date	24 Sep 2017 - 05:49 UT
Launch site	Va, SLC-3E
Launch vehicle	Atlas V-541
Mission	Sigint
Earth orbit:
Perigee / Apogee	2100? x 37800? km
Eccentricity
Inclination	62.8°
Period	min

Spacecraft data:

Prime manufacturer
Platform
Operator
Mass at launch	kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment
Solar array
Stabilization
Propulsion
DC power
Design lifetime

Mission details:

A ULA Atlas 5 placed an NRO satellite in highly elliptical orbit on Sep 24, 2017. The satellite is thought to host a signals intelligence payload (possibly codenamed RAVEN) and the HEO-4 missile early warning package.
The Centaur stage was deorbited after one revolution.

External links:

Satellite tracking (n2ya.com): Real time satellite tracking

Ref.: #7(JR741) - update: 31.10.17