EchoStar IV

{{Short description|Communications satellite}}

{{Infobox spaceflight

| name = EchoStar IV

| image =

| image_caption =

| mission_type = Communications

| operator = EchoStar

| website =

| COSPAR_ID = 1998-028A

| SATCAT = 25331

| mission_duration = 12 years

| spacecraft_bus = A2100AX

| spacecraft_type =

| manufacturer = Lockheed Martin

| dry_mass = {{convert|1,400|kg|lb|abbr=on}}

| launch_mass = {{convert|3,478|kg|lb|abbr=on}}

| BOL_mass =

| dimensions =

| power = 10 kW

| launch_date = {{start date text|May 7, 1998, 23:45|timezone=yes}} UTC

| launch_rocket = Proton-K/Blok-DM3

| launch_site = Baikonur 81/23

| launch_contractor =

| disposal_type =

| deactivated = {{end date|2011|07}}

| orbit_epoch = May 14, 2017{{cite web|url=https://www.n2yo.com/satellite/?s=25331/ |last=N2yo |title=ECHOSTAR 4 |accessdate=November 28, 2017}}

| orbit_reference = Geocentric

| orbit_regime = Geostationary

| orbit_periapsis = {{convert|36,085.2|km|mi|sp=us}}

| orbit_apoapsis = {{convert|36,250.7|km|mi|sp=us}}

| orbit_inclination = 7.0 degrees

| orbit_semimajor = {{convert|42,538.0|km|mi|sp=us}}

| orbit_period = 1,455.3 minutes

| orbit_longitude = 77° west

| apsis = gee

| trans_band = 32 {{Ku band}}

| trans_frequency = Uplink: 17.3 - 17.8 GHz
Downlink: 12.2 - 12.7 GHz

| trans_bandwidth = 24 MHz

| trans_capacity =

| trans_coverage = United States, Mexico and Puerto Rico

| trans_TWTA =

| trans_EIRP = 53 dBW

| trans_HPBW =

}}

EchoStar IV is a communications satellite operated by EchoStar. Launched in 1998 it was operated in geostationary orbit at a longitude of 77 degrees west for 12 years.

Satellite

The launch of EchoStar IV made use of a Proton rocket flying from Site 81 at the Baikonur Cosmodrome, Kazakhstan. The launch took place at 23:45 UTC on May 7, 1998, with the spacecraft entering a geosynchronous transfer orbit. EchoStar IV carried 32 Ku band transponders to provide direct voice and video communications to small dishes in North America after parking over 119° W or 148° W longitude.{{cite web|url=http://www.satbeams.com/satellites?id=25331|title=EchoStar 4|publisher=SatBeams|accessdate=September 28, 2017}}

Specifications

{{Clear}}

See also

{{Portal|Spaceflight}}

References