TDRS-5: Difference between revisions

{{Short description|American communications satellite}}

{{Use American English|date=June 2020}}

{{Use dmy dates|date=July 2020}}

| name = TDRS-5

| image = TDRS-E deployment from STS-43.jpg

| image_caption = TDRS-E aboard ''Atlantis'' during deployment

| mission_type = [[Communications satellite|Communication]]

| operator = [[NASA]]

| COSPAR_ID = 1991-054B

| SATCAT = 21639

| mission_duration = Planned: 10 years<br />Elapsed: {{time interval|2 August 1991 15:01:59|show=ymd|sep=,}}

| spacecraft_bus = TDRS

| manufacturer = [[TRW Inc.|TRW]]

| dry_mass =

| launch_mass = {{convert|2108|kg|lb|abbr=on}}

| dimensions = {{convert|17.3|xx|14.2|m|ft|abbr=on}}

| power = 1700 watts

| launch_date = {{start-date|2 August 1991, 15:01:59}}&nbsp;[[UTC]]

| launch_rocket = {{OV|104}}<br/>[[STS-43]] / [[Inertial Upper Stage|IUS]]

| launch_site = [[Kennedy Space Center]], [[Kennedy Space Center Launch Complex 39A|LC-39A]]

| launch_contractor = [[Rockwell International]]

| entered_service =

| disposal_type =

| deactivated = <!-- {{end-date|[insert date here]}} -->

| orbit_epoch = 3 August 1991

| orbit_reference = [[Geocentric orbit]]

| orbit_regime = [[Geostationary orbit]]

| orbit_longitude = 174° West (1991–) <ref name="SFN-TDRSJ">{{cite web |url=http://www.spaceflightnow.com/atlas/ac144/021201tdrs.html |title=The TDRS-J satellite |date=1 December 2002 |publisher=Spaceflight Now |accessdate=2 August 2009}}</ref>

| orbit_slot =

| apsis = gee

| trans_band =

| trans_frequency =

| trans_bandwidth =

| trans_capacity =

| trans_coverage =

| trans_TWTA =

| trans_EIRP =

| trans_HPBW =

'''TDRS-5''', known before launch as '''TDRS-E''', is an American [[communications satellite]], of first generation, which is operated by [[NASA]] as part of the [[Tracking and Data Relay Satellite System]]. It was constructed by [[TRW Inc.|TRW]] is based on a custom [[satellite bus]] which was used for all seven first generation TDRS satellites.<ref name="GSP">{{cite web |url=http://space.skyrocket.de/doc_sdat/tdrs-1.htm |title=TDRS 1, 2, 3, 4, 5, 6 |publisher=Gunter's Space Page |first=Gunter |last=Krebs |accessdate=2 August 2009}}</ref>

[[Image:STS-43 Launch - GPN-2000-000731.jpg|left|thumb|150px|The launch of STS-43, carrying TDRS-E]]

It was launched aboard {{OV|104}} during the [[STS-43]] mission. ''Atlantis'' launched from [[Kennedy Space Center Launch Complex 39A|Launch Complex 39A]] at the [[Kennedy Space Center]] on 2 August 1991 at 15:01:59 [[Coordinated Universal Time|UTC]] (11:01:59 [[Eastern Time Zone|EDT]]).<ref name="JSR">{{cite web |url=http://planet4589.org/space/log/launchlog.txt |title=Launch Log |publisher=Jonathan's Space Page |first=Jonathan |last=McDowell |accessdate=2 August 2009}}</ref> TDRS-E was deployed from ''Atlantis'' around six hours after launch, and was raised to [[geostationary orbit]] by means of an [[Inertial Upper Stage]]. It was the only TDRS satellite to be deployed from ''Atlantis''.<ref name="JSR"/>

The twin-stage solid-propellent Inertial Upper Stage made two burns. The first stage burn occurred shortly after deployment, from ''Atlantis'', and placed the satellite into a [[geostationary transfer orbit]] (GTO). Around six hours later, it reached [[Apsis|apogee]], and the second stage fired, placing TDRS-E into [[geosynchronous orbit]]. At this point, it received its operational designation, TDRS-5. It was placed at a position over the [[Equatorial coordinate system|equator]], 174.0° West of the [[Prime meridian (Greenwich)|Greenwich Meridian]],<ref name="SFN-TDRSJ"/> from where it provides communications services to spacecraft in Earth orbit, including the [[Space Shuttle]] and [[International Space Station]].

[[File:Location of TDRS.svg|left|thumb|Location of TDRS as of 26 May 2020]]

[[File:Map of TDRS.png|center|thumb|Location of TDRS as of 18 March 2019]]

== See also ==

* [[List of TDRS satellites]]

==References==

[[Category:TDRS satellites]]