Intelsat II F-4

{{Infobox spaceflight

| name = Intelsat II F-4

| image =

| image_caption =

| mission_type = Communications

| operator = Intelsat

| website =

| COSPAR_ID = 1967-094A{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1967-094A|title=INTELSAT 2 F-4|publisher=National Space Science Data Center|access-date=February 8, 2014}}

| SATCAT = 2969

| mission_duration = 3 years planned
{{frac|3|1|2}} years achieved

| spacecraft_bus = HS-303A

| spacecraft_type = Intelsat II

| manufacturer = Hughes

| dry_mass =

| launch_mass = {{convert|162|kg}}

| BOL_mass = {{convert|86|kg}}

| dimensions =

| power = 85 watts

| launch_date = {{start-date|September 28, 1967, 00:45:00|timezone=yes}} UTC{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|access-date=February 8, 2014}}

| launch_rocket = Delta E1

| launch_site = Cape Canaveral LC-17B

| launch_contractor = NASA

| disposal_type =

| deactivated = c. {{end-date|1971}}

| orbit_epoch = February 8, 2014, 07:56:55 UTC{{cite web|url=http://www.n2yo.com/satellite/?s=2969|title=INTELSAT 2-F4 Satellite details 1967-094A NORAD 2969|work=N2YO|date=February 8, 2014|access-date=February 8, 2014}}

| orbit_reference = Geocentric

| orbit_regime = Geosynchronous

| orbit_periapsis = {{convert|35742|km|mi|sp=us}}

| orbit_apoapsis = {{convert|35886|km|mi|sp=us}}

| orbit_inclination = 6.00 degrees

| orbit_period = 23.95 hours

| orbit_longitude = 176° east (1967-70)
166° west (1971)

| apsis = gee

| trans_band =

| trans_frequency =

| trans_bandwidth =

| trans_capacity =

| trans_coverage =

| trans_TWTA =

| trans_EIRP =

| trans_HPBW =

| programme = Intelsat II

| previous_mission = Intelsat II F-3

| next_mission = Intelsat III F-1 (Intelsat III)

}}

Intelsat II F-4 was a communications satellite operated by Intelsat. Launched in 1967 it was operated in geostationary orbit at a longitude of 176 degrees east and later 166 degrees west.{{cite encyclopedia|url=http://www.astronautix.com/craft/intlsat2.htm|archive-url=https://web.archive.org/web/20020223093831/http://www.astronautix.com/craft/intlsat2.htm|url-status=dead|archive-date=February 23, 2002|title=Intelsat 2|first=Mark|last=Wade|encyclopedia=Encyclopedia Astronautica|access-date=February 8, 2014}}

The fourth and last Intelsat II satellite to be launched, Intelsat II F-4 was built by Hughes Aircraft around the HS-303A satellite bus. It carried two transponders, which were powered by body-mounted solar cells generating 85 watts of power.{{cite web|url=http://space.skyrocket.de/doc_sdat/intelsat-2.htm|title=Intelsat-2|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=February 8, 2014}} The spacecraft had a mass of {{convert|162|kg|lb}} at launch, decreasing through expenditure of propellant to {{convert|86|kg|lb}} by the beginning of its operational life.

Intelsat II F-4 was launched atop a Delta E1 rocket flying from Launch Complex 17B at the Cape Canaveral Air Force Station. The launch took place at 00:45:00 UTC on September 28, 1967, with the spacecraft entering a geosynchronous transfer orbit. It fired an SVM-1 apogee motor to place itself into its operational geostationary orbit. The spacecraft was operated at a longitude of 176° east until 1970, before being moved to 166° west. In total the satellite remained in service for around three and a half years.

As of February 8, 2014 the derelict Intelsat II F-4 was in an orbit with a perigee of {{convert|35742|km|mi|sp=us}}, an apogee of {{convert|35886|km|mi|sp=us}}, inclination of 6.00 degrees and an orbital period of 23.95 hours.