Re-entered 1972-07-21Payload

ITOS-B & DELTA 1 R/B

NORAD: 5565
COSPAR: 1971-091A

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.

Is it working?

Sources agree

Source	What it says	Date
CelesTrak SATCAT	Decayed or deorbited	1972-07-21
GCAT (J. McDowell)	Re-entered	1972-07-21

Each line is one source and what it says. Where they disagree, both are shown; OrbitalWiki does not pick a winner.

Spacecraft

Built by: Aerojet Engineering
Owner: NASA Goddard Space Flight Center
Platform (bus): Ablestar
Mass at launch: 785 kg(estimate, good to about 20%)
Dry mass: 785 kg(estimate, good to about 20%)
Length: 5.2 m
Diameter: 1.4 m
Span with arrays and booms: 5.2 m
Shape: Cyl

From GCAT by Jonathan McDowell (CC BY 4.0), record S05565, checked 2026-11-05. About this source

Launch

Launch date: 1971-10-21
Rocket: Thor Delta N6
Flight: ITOS B
Mission name: ITOS B
Launch site: V, SLC2E
Launched by: NASA Goddard Space Flight Center
Rocket performance: Failure
Launch designator: 1971-091

From the GCAT launch log, launch 1971-091, checked 2026-11-05. About this source

Catalogue record

Object type: Payload
Owner code: US
Launch date: 1971-10-21
Re-entered: 1972-07-21
Period: 89.4 min
Inclination: 102.43°
Apogee: 274 km
Perigee: 214 km

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

Where it came from

Catalogued pieces that came from it: 4

Everything from this launch

Debris4 in total, 0 still in orbit
Payload1 in total, 0 still in orbit