2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Spacecraft
  3. Wilkinson Microwave Anisotropy Probe
// astronomy · 2001

Wilkinson Microwave Anisotropy Probe

NASA Cosmic Microwave Background probe launched in 2001. Wilkinson Microwave Anisotropy Probe was launched on June 30, 2001 aboard a Delta 7425-10 from Cape Canaveral & Kennedy. Latest status in GCAT: left Earth orbit for deep space (Jul 1, 2001).

COSPAR 2001-027ANORAD 26859United States

Identity

Name in GCAT
WMAP
Common name
Wilkinson Microwave Anisotropy Probe
Payload designation
Microwave Anisotropy Probe
International designator
2001-027A
NORAD catalog number
26859
GCAT identifier
S26859
UN registration
ST/SG/SER.E/400

Mission

Mission type
Astronomy
Use
Civil government
Program
MIDEX
Owner
GSFC
Country
United States
Builder
NASA Goddard Space Flight Center
Platform (bus)
MIDEX

Launch

Date
June 30, 2001 · 19:46 UTC
Launch record
2001-027Success
Rocket
Delta 7425-10
Spaceport
Cape Canaveral & Kennedy · pad SLC17B

Orbit and fate

Orbit class (GCAT)
CLO
Perigee
3,144 km
Apogee
347,874 km
Inclination
28.31°
Status
Left Earth orbit for deep space
Status date
July 1, 2001
Last known active
2006
End of operations
Oct 28, 2010

Size

Mass
840 kg
Dry mass
768 kg
Length
3.8 m
Diameter
2.00 m
Span
5.0 m

Deep space

Deep-space catalog entry
D00778
Final central body
Luna
Phase start
July 29, 2001
Phase outcome
Flyby · July 31, 2001
Destination
Earth

Flight phases

FromCentral bodyEndedOutcomeNext
Jul 1, 2001EarthJul 29, 2001Escaped to another bodyLuna
Jul 31, 2001EarthAug 26, 2001Escaped to another bodyHCO
Aug 26, 2001SEL2Oct 20, 2010Escaped to another bodyHCO

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q274106 (CC0).