NSS-806
| Mission type | Communications |
|---|---|
| Operator | Intelsat → SES World Skies |
| COSPAR ID | 1998-014A |
| SATCAT no. | 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 UTC SLC-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 | 28 C Band, 3 Ku band |
| Coverage area | Americas, Europe |
Intelsat 8 | |
NSS-806 (New Skies Satellite 806), before Intelsat 806, is a
Satellite
NSS-806 is equipped with 28
Launch
The launch of NSS-806 made use of an
Health and replacement
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 a SpaceX Falcon 9, and SES predicted that the transponder failure would result in a revenue loss of between 7 and 9 million euros.[5] The following month, SES arranged to swap flights so that SES-12 would launch in January 2018 on an Ariane 5, with SES-12, originally scheduled for that flight, now launching on the Falcon 9 later in Q1.[6]
SES-14 was launched from Kourou 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.[7][8]
Technical details
| C-Band slot chart | |||||
|---|---|---|---|---|---|
| Slot | Uplink ( GHz )
|
Downlink (GHz) | Hemi A | Hemi B | 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 | 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 |
References
- ^ a b "NSS-806". SatBeams - Satellite Details. Retrieved May 7, 2017.
- ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved May 7, 2017.
- ^ Peat, Chris. "NSS 806 (INTELSAT 806)". Heavens Above. Retrieved May 7, 2017.
- ^ "INTELSAT 806". N2YO. Retrieved May 7, 2017.
- ^ Henry, Caleb (July 31, 2017). "SES loses 12 transponders on NSS-806 satellite, says impact is temporary". Space News. Retrieved January 27, 2018.
- ^ Henry, Caleb (August 28, 2017). "SES flips SpaceX, Arianespace launches to speed NSS-806 replacement". Space News. Retrieved January 27, 2018.
- ^ Henry, Caleb (January 26, 2018). "Satellites placed into incorrect orbits by Ariane 5 can be recovered, owners say". Space News. Retrieved January 27, 2018.
- ^ Payer, Markus (January 26, 2018). "SES-14 in good health and on track despite launch anomaly". SES. Retrieved January 27, 2018.
 | This article about one or more spacecraft of the Netherlands is a stub. You can help Wikipedia by expanding it. |
 | This article about one or more spacecraft of the United States is a stub. You can help Wikipedia by expanding it. |