[Editor’s Note: While not a traditional story we’d normally cover, this one has implications for every satellite and cable customer, and was unusual enough to bring to your attention.]

Intelsat's Galaxy 15, pictured above, has gone rogue

A satellite now drifting out of control threatens to interfere with dozens of American cable networks as it intrudes into a neighboring satellite’s assigned slot.  Intelsat’s Galaxy 15 positioned at 132ºW is on the move, less than one degree away from its next door neighbor,  SES World Skies-owned AMC 11 (131ºW).  Intelsat technicians lost control of the satellite on April 5th, and although the satellite continues to operate at full power, capable of delivering a hundred of more digital television signals to viewers on Earth, Intelsat can no longer keep the satellite in its assigned position.

Communications satellite failures are not as rare as their owners wish.  Solar storms have the power to wipe out a $250 million dollar investment required to build, launch, and operate a satellite in mere minutes.  Intelsat speculates a solar storm may be responsible for Galaxy 15 going rogue.

The majority of communications satellites are locked into a geostationary orbit, which means a satellite dish can be fixed to point to a particular satellite and never require repositioning.  Satellites are equipped with small jets that can be fired to maintain a satellite’s position.  Without them, orbiting satellites would begin to drift, and in a neighborhood where only a degree or two separates satellites, it doesn’t have to drift far to create major problems.

The result of Galaxy 15’s unplanned adventure is imminent interference to its next door neighbor, AMC 11. Since both satellites share the same frequencies, that guarantees as long as Galaxy 15 is powered up, a mix of the two satellite’s signals is guaranteed.

“That fact means that there is likely to be some kind of interference,” Yves Feltes, a spokesman for AMC 11 owner SES World Skies, told The Associated Press. “Our aim is to bring any interference down to zero.”

Nearly every signal on AMC 11 is a digitally compressed, encrypted cable network intended for the United States.  By May 23rd, if the companies do nothing, the interference will increase the digital signal error rate high enough to blank out the channels for the duration.

Intelsat engineers intend to continue efforts to re-establish contact with the satellite.  If they don’t succeed, the satellite will next intrude on Ciel 2 and EchoStar 14 (129ºW) which deliver programming for DISH Satellite Network customers, Galaxy 13/Horizons 1 (127ºW) which delivers international channels and several feeds of HBO, Starz, and other cable networks, and AMC 21 (125ºW), used mostly by PBS.

Current occupants of AMC 11 can potentially be relocated to other satellites for the duration, although that could create nightmares for cable systems nationwide forced to adjust reception equipment for dozens of popular cable channels.

[flv width=”640″ height=”380″]http://www.phillipdampier.com/video/ABC News Satellite Puts Cable TV in Jeopardy 5-11-10.flv[/flv]

ABC News’ Good Morning America ran this story on the zombie satellite and its potential impact on cable viewers nationwide.  (2 minutes)

The list of potentially impacted channels on AMC 11 is enormous:

Cable Networks

(East and West refers to individual feeds intended for the east coast and west coast of the United States, the latter delayed three hours)

• Hot Choice (Adult movies/Pay-Per-View)
• In Demand 1-7 (Pay-Per-View)
• Lifetime East & West
• Lifetime Movie Network
• Lifetime Real Women
• Hallmark Channel US East & West
• Hallmark Movie Channel East & West
• C-SPAN & C-SPAN Radio
• E! East
• The Style Network East
• G4 TV East
• Food Network East & West
• DIY Network USA
• Fine Living Network USA
• HGTV East
• Great American Country
• QVC HD & QVC USA
• A&E East & West
• History Channel – East, West & en Español
• The Military Channel
• Crime & Investigation Network USA
• The Weather Channel
• NESN (New England Sports) NE, Maine, Alternate, Boston & Providence
• Catholic TV
• MTV West, MTV 2 East, MTV Jams, MTV Hits, & MTV Tr3s East
• VH1 East & West, VH1 Classic East & VH1 Soul
• CMT East, West & Pure Country
• Nickelodeon East & West, Nick Jr USA, TeenNick, NickToons USA, & Nick Too
• Logo East
• The Learning Channel (TLC) East & Canada
• Discovery Familia, Discovery en Español, Discovery Health Channel East & West, Investigation Discovery USA & Discovery Kids USA
• HD Theater
• TV Land East & West
• Spike TV East & West
• Comedy Central East & West
• Showtime East, Showtime 2 East, Showtime Showcase East, Showtime Beyond East, Showtime Extreme East, Showtime Next East, Showtime Family East, & Showtime Women East
• The Movie Channel East & The Movie Channel Xtra East
• Flix East
• The Science Channel
• Planet Green
• Fit TV
• BBC America
• CNBC World
• Bravo East
• Chiller
• Mun 2 East
• TeleFutura East & West

Broadcast Networks & Stations

• The CW
• Telemundo East & West
• Univisión East & West
• WNBC-TV New York

(Channel List Courtesy: LyngSat)

[flv width=”641″ height=”380″]http://www.phillipdampier.com/video/The Galaxy 15 Zombie Satellite – 2010.05.flv[/flv]

Spacevidcast Daily got a bit more technical about the satellite mishap, and how it might get resolved.  (3 minutes)