Sirius FM-2

{{Infobox spaceflight

| name = Sirius FM-2

| image =

| image_caption =

| mission_type = Communication

| operator = Sirius
Sirius XM Radio

| website =

| COSPAR_ID = 2000-051A

| SATCAT =

| mission_duration = Planned: 15 years; Achieved: 15-16 years

| spacecraft_bus = LS-1300

| manufacturer = Loral

| dry_mass =

| launch_mass = {{convert|3800|kg|lb}}

| power =

| launch_date = {{start-date|5 September 2000}}

| launch_rocket = Proton-K/DM3

| launch_site = Baikonur 81/23

| launch_contractor = ILS

| entered_service =

| disposal_type = Disposal orbit

| deactivated = {{end-date|2016}}

| orbit_epoch =

| orbit_reference = Geocentric

| orbit_regime = Tundra

| orbit_periapsis =

| orbit_apoapsis =

| orbit_inclination =

| orbit_period =

| orbit_longitude =

| orbit_slot =

| apsis = gee

| trans_band =

| trans_frequency =

| trans_bandwidth =

| trans_capacity =

| trans_coverage =

| trans_TWTA =

| trans_EIRP =

| trans_HPBW =

}}

Sirius FM-2, also known as Radiosat 2, was an American communications satellite which was operated by Sirius XM Radio, previously Sirius Satellite Radio. It was constructed by Space Systems Loral and was based on the LS-1300 satellite bus. Launch occurred on 5 September 2000, at 09:43 GMT. The launch was contracted by International Launch Services, and used a Proton-K/DM3 carrier rocket flying from Site 81/23 at the Baikonur Cosmodrome.

It was operating in a tundra orbit, from where it provided satellite radio communications services to North America. It had an expected operational lifetime of 15 years.

In 2016, the satellite was moved into a disposal orbit and decommissioned.{{Cite report|url=https://seekingalpha.com/filing/3381845|title=Sirius XM Holdings Inc. 10-K Feb. 2, 2017 11:57 AM|website=Seeking Alpha |publisher=Sirius XM Holdings Inc. |date=2 February 2017|editor-first=James E. |editor-last=Meyer |editor2-first=David J. |editor2-last=Frear}}

{{multiple image

| align = left

| direction = horizontal

| width = 280

| header = Animation of Sirius{{'s}} orbit

| image1 = Animation of Sirius's orbit.gif

| caption1 = Around the Earth

| image2 = Animation of Sirius's orbit - Earth fixed - Equatorial view.gif

| caption2 = Earth fixed frame - Equatorial view

| image3 = Animation of Sirius's orbit - Earth fixed - Polar view.gif

| caption3 = Earth fixed frame - Polar view

| footer = {{legend2|RoyalBlue|Earth}}{{·}}{{legend2|magenta|Sirius FM-5}}{{·}}{{legend2|Cyan|Sirius FM-1}} {{·}}{{legend2|Gold|Sirius FM-2}} {{·}}{{legend2|OrangeRed|Sirius FM-3}}

}}

{{clear}}