In orbitRocket body

SPACENET 4 R/B [PAM-D]

NORAD: 21229
COSPAR: 1991-028C

OrbitalWiki publishes live orbits for active satellites only. This object is in the full catalogue: who launched it, what it is and its last published orbit are below, but there are no current orbital elements for it here.

Spacecraft

Built by: Thiokol-Elkton
Owner: McDonnell Douglas Astronautics/HB
Platform (bus): Star 48
Mass at launch: 2,141 kg
Dry mass: 132 kg
Total mass with attached parts: 133 kg
Length: 2.3 m
Diameter: 1.1 m
Span with arrays and booms: 2.3 m
Shape: Sphere + Cone

From GCAT by Jonathan McDowell (CC BY 4.0), record S21229, checked 2026-11-05. About this source

Launch

Launch date: 1991-04-13
Rocket: Delta 7925
Flight: Spacenet 4
Mission name: ASC 2
Launch site: CC, LC17B
Launched by: McDonnell Douglas/HB
Rocket performance: Success
Launch designator: 1991-028

From the GCAT launch log, launch 1991-028, checked 2026-11-05. About this source

Catalogue record

Object type: Rocket body
Owner code: US
Launch date: 1991-04-13
Period: 655.4 min
Inclination: 21.94°
Apogee: 35,822 km
Perigee: 1,410 km
Radar cross-section: 3.0144 m²

From CelesTrak SATCAT, checked 2026-11-05. About this source

Where it came from

Parent object: DELTA 2 R/B (NORAD 21228)
Catalogued pieces that came from it: 1

The object this one was attached to at launch, or broke off from, as GCAT records it.

Everything from this launch

Payload1 in total, 1 still in orbit
Rocket body2 in total, 2 still in orbit