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S.S. William C. McCool

2025 cargo resupply mission to the International Space Station. S.S. William C. McCool was launched on September 14, 2025 aboard a Falcon 9 from Cape Canaveral & Kennedy. Latest status in GCAT: grappled by another object (Sep 18, 2025).

COSPAR 2025-208ANORAD 65616United States

Identity

Name in GCAT
S.S. William C. McCool
Payload designation
Cygnus NG-23
International designator
2025-208A
NORAD catalog number
65616
GCAT identifier
S65616

Mission

Mission type
Human spaceflight
Use
Commercial
Program
Cygnus
Owner
NGIS
Country
United States
Builder
Northrop Grumman Space Systems Group (SSG)
Platform (bus)
sPCM

Launch

Date
September 14, 2025 · 22:11 UTC
Launch record
2025-208Success
Rocket
Falcon 9
Spaceport
Cape Canaveral & Kennedy · pad LC40

Orbit and fate

Orbit class (GCAT)
LLEO/I
Perigee
242 km
Apogee
245 km
Inclination
51.65°
Status
Grappled by another object
Status date
September 18, 2025
Last known active
Mar 14, 2026
End of operations
Mar 14, 2026

Size

Mass
3,290 kg
Dry mass
3,290 kg
Total mass with attached objects
10.2 t
Length
7.9 m
Diameter
3.00 m
Span
10.5 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q124544457 (CC0).