2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Spacecraft
  3. GSSAP-2
// missile early warning · 2014

GSSAP-2

American near-geosynchronous space surveillance satellite. GSSAP-2 was launched on July 28, 2014 aboard a Delta 4M+(4,2) from Cape Canaveral & Kennedy. Latest status in GCAT: in orbit.

COSPAR 2014-043BNORAD 40100United States

Identity

Name in GCAT
USA 254
Common name
GSSAP-2
Payload designation
Hornet 2
Other names
AFSPC-4 F2,GSSAP 2
International designator
2014-043B
NORAD catalog number
40100
GCAT identifier
S40100
UN registration
ST/SG/SER.E/745

Mission

Mission type
Missile early warning
Use
Defense
Program
GSSAP
Country
United States
Builder
Orbital Sciences Corp.
Platform (bus)
GeoStar-1

Launch

Date
July 28, 2014 · 23:28 UTC
Launch record
2014-043Success
Spaceport
Cape Canaveral & Kennedy · pad SLC37B

Orbit and fate

Orbit class (GCAT)
GEO/D
Perigee
35,746 km
Apogee
35,750 km
Inclination
0.16°
Status
In orbit
Last known active
Oct 7, 2021
End of operations
Oct 7, 2021

Size

Mass
500 kg
Dry mass
500 kg
Length
2.0 m
Diameter
2.00 m
Span
5.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q113633506 (CC0).