Star One D1

{{Use British English|date=March 2021}}

{{Use dmy dates|date=March 2021}}

{{Infobox spaceflight

| name = Star One D1

| names_list = Hispasat 84W-2
H84W-2

| image =

| image_caption =

| image_size = 300px

| mission_type = Communications

| operator = Embratel

| COSPAR_ID = 2016-082B

| SATCAT = 41904

| website = https://www.embratel.com.br/

| mission_duration = 15 years (planned)
{{time interval|21 December 2016|show=ymd}} (in progress)

| spacecraft = Star One D1

| spacecraft_type =

| spacecraft_bus = SSL 1300E

| manufacturer = Space Systems/Loral

| launch_mass = {{cvt|6443|kg}}

| dry_mass =

| dimensions =

| power = 16 kW

| launch_date = 21 December 2016, 20:30 UTC

| launch_rocket = Ariane 5 ECA

| launch_site = Centre Spatial Guyanais, ELA-3

| launch_contractor = Arianespace

| entered_service =

| disposal_type =

| deactivated =

| last_contact =

| orbit_reference = Geocentric orbit

| orbit_regime = Geostationary orbit

| orbit_longitude = 84° West

| apsis = gee

| trans_band = 70 transponders:
28 C-band
24 Ku-band
18 Ka-band

| trans_frequency =

| trans_bandwidth =

| trans_capacity =

| trans_coverage = Brazil, Latin America

| programme = Star One constellation

| previous_mission = Star One C4

| next_mission = Star One D2

}}

Star One D1 is a communications satellite operated by Embratel Star One with headquarters in Rio de Janeiro, Brazil. It was built by Space Systems/Loral (SSL) based on the SSL 1300 satellite bus. The satellite was successfully launched into space on 21 December 2016 at 20:30 UTC with an Ariane 5 ECA launch vehicle from the Centre Spatial Guyanais in French Guiana, together with the JCSAT-15. It had a launch mass of {{cvt|6340|kg}}.{{cite web |url=http://space.skyrocket.de/doc_sdat/starone-d1.htm|title=Star One D1|publisher=Gunter's Space Page|date=11 December 2017|access-date=1 April 2021}}