Advanced Composition Explorer

NASA scientific satellite. Advanced Composition Explorer was launched on August 25, 1997 aboard a Delta 7920-8 from Cape Canaveral & Kennedy. Latest status in GCAT: left Earth orbit for deep space (Aug 26, 1997).

COSPAR 1997-045ANORAD 24912United States

Identity

Name in GCAT: ACE
Common name: Advanced Composition Explorer
Payload designation: Advanced Composition Expl.
International designator: 1997-045A
NORAD catalog number: 24912
GCAT identifier: S24912
UN registration: ST/SG/SER.E/339

Mission

Mission type: Space science
Use: Civil government
Program: DeltaEx
Owner: GSFC
Country: United States
Builder: JHU-Applied Physics Lab
Platform (bus): AMPTE-CCE

Launch

Date: August 25, 1997 · 14:39 UTC
Launch record: 1997-045Success
Rocket: Delta 7920-8
Spaceport: Cape Canaveral & Kennedy · pad LC17A

Orbit and fate

Orbit class (GCAT): CLO
Perigee: 177 km
Apogee: 1,281,969 km
Inclination: 28.70°
Status: Left Earth orbit for deep space
Status date: August 26, 1997
Last known active: January 2023

Size

Mass: 785 kg
Dry mass: 596 kg
Length: 2.5 m
Diameter: 1.60 m
Span: 8.3 m

Deep space

Deep-space catalog entry: D00735
Final central body: SEL1
Phase start: September 16, 1997
Phase outcome: In orbit

Flight phases

From	Central body	Ended	Outcome	Next
Aug 26, 1997	Earth	Sep 16, 1997	Escaped to another body	SEL1

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q2463 (CC0).