Re-entered 1975-06-08Debris

DELTA 1 DEB

NORAD: 5818
COSPAR: 1972-005D

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	1975-06-08
GCAT (J. McDowell)	Re-entered	1975-06-08

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

Spacecraft

Owner: NASA Goddard Space Flight Center

From GCAT by Jonathan McDowell (CC BY 4.0), record S05818, checked 2026-11-05. About this source

Launch

Launch date: 1972-01-31
Rocket: Thor Delta L
Flight: HEOS 2
Mission name: HEOS A2
Launch site: V, SLC2E
Launched by: NASA Goddard Space Flight Center
Rocket performance: Success
Launch designator: 1972-005

From the GCAT launch log, launch 1972-005, checked 2026-11-05. About this source

Catalogue record

Object type: Debris
Owner code: US
Launch date: 1972-01-31
Re-entered: 1975-06-08
Period: 89.7 min
Inclination: 89.72°
Apogee: 285 km
Perigee: 230 km

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

Where it came from

Parent object: DELTA 1 R/B(1) (NORAD 5815)

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

Everything from this launch

Debris2 in total, 0 still in orbit
Payload1 in total, 0 still in orbit
Rocket body2 in total, 0 still in orbit