0°00′N47°30′W / 0°N 47.5°W /0; -47.5
| Mission type | Communications |
|---|---|
| Operator | Intelsat →SES World Skies |
| COSPAR ID | 1998-014A |
| SATCATno. | 25239 |
| Mission duration | 15 years |
| Spacecraft properties | |
| Spacecraft type | AS-7000 |
| Manufacturer | Lockheed Martin |
| Launch mass | 3,720 kg (8,200 lb)[1] |
| Dry mass | 2,200 kg (4,900 lb)[1] |
| Start of mission | |
| Launch date | February 28, 1998, 00:21 (1998-02-28UTC00:21Z) UTC[2] |
| Rocket | Atlas IIAS AC-151 |
| Launch site | Cape CanaveralSLC-36B |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Eccentricity | 0.0004615 |
| Perigee altitude | 35,806.0 kilometres (22,248.8 mi) |
| Apogee altitude | 35,767.0 kilometres (22,224.6 mi)[3] |
| Inclination | 0.058° |
| Period | 1,436.1 minutes |
| Epoch | May 7, 2017[4] |
| Transponders | |
| Band | 28C Band, 3Ku band |
| Coverage area | Americas,Europe |
Intelsat 8 Intelsat 901 (Intelsat 9) → | |
NSS-806 (New Skies Satellite 806), beforeIntelsat 806, is acommunications satellite originally operated byIntelsat. Launched in 1998 it was operated ingeostationary orbit at a longitude of 47 degrees west for around 15 years. It is currently located in the orbital position of 47.5 degrees west longitude, was initially operated byIntelsat, orbited at 40.5 degrees west, and was purchased bySES World Skies (a subsidiary ofSES).
NSS-806 is equipped with 28transponders inC band and 3 inKu band, making transmissions for theAmericas and parts ofEurope.[5] In order to receive the signal it requires a monofocal antenna (LNBF antenna in the center), aLNBF for C band (5150MHz) and a digital receiver compatible with C band. The NSS-806 emits its signal in circular polarization.
The launch of NSS-806 made use of anAtlas II rocket flying fromCape Canaveral Air Force Station,Florida,United States. The launch took place at 00:21 UTC on February 28, 1998, with the spacecraft entering ageosynchronous transfer orbit. NSS-806 subsequently fired its apogee motor to achievegeostationary orbit.[6]
In July 2017, seven years past its 12-year intended design life, NSS-806 lost the use of 12 of its 39 transponders. NSS-806's replacement,SES-14, was scheduled to be launched in first quarter of 2018 on aSpaceXFalcon 9, and SES predicted that the transponder failure would result in a revenue loss of between 7 and 9 million euros.[7] The following month, SES arranged to swap flights so that SES-12 would launch in January 2018 on anAriane 5, withSES-12, originally scheduled for that flight, now launching on the Falcon 9 later in Q1.[8]
SES-14 was launched fromKourou on 25 January 2018, but was placed in an incorrect orbit due to a launch vehicle anomaly. SES reported that the all-electric SES-14 would take four more weeks than originally planned to reach its operating orbit, but that the satellite was healthy and was expected to meet its designed life time. SES-14's in-service date, originally set for July 2018, was expected to be pushed back until at least August 2018.[9][10]
| C-Band slot chart | |||||
|---|---|---|---|---|---|
| Slot | Uplink (GHz) | Downlink (GHz) | Hemi A | Hemi B | Bandwidth (MHz) |
| 5'-6' | 6.527 | 3.502 | 12' | 22' | 72 |
| 3'-4' | 6.607 | 3.582 | 11' | 21' | 72 |
| 1'-2' | 5.888 | 3.663 | 10 | 20 | 72 |
| 1-2 | 5.968 | 3.743 | 11 | 21 | 72 |
| 3 | 6.028 | 3.803 | 12A | 22A | 36 |
| 4 | 6.068 | 3.843 | 12B | 22B | 36 |
| 5 | 6.108 | 3.883 | 13A | 23A | 36 |
| 6 | 6.148 | 3.923 | 13B | 23B | 36 |
| 7 | 6.201 | 3.976 | 14A | 24A | 36 |
| 9 | 6.280 | 4.055 | 15 | 25 | 36 |
| 10 | 6.320 | 4.095 | 16 | 26 | 36 |
| 11 | 6.360 | 4.135 | 17 | 27 | 36 |
| 12 | 6.4025 | 4.1775 | 18 | 28 | 41 |
| Ku-band slot chart | ||||
|---|---|---|---|---|
| Slot | Uplink (GHz) Polariztion H | Downlink (GHz) Polarization V | Spot 1 | Bandwidth (MHz) |
| 1-2 | 14.0425 | 12.7475 | 261 | 77 |
| 3-4 | 14.125 | 11.830 | 262 | 72 |
| 5-6 | 14.205 | 11.910 | 263 | 72 |
