NSS-5

NSS-5 (Formerly known as Intelsat 803 and NSS-803) is a communications satellite operated by Intelsat and after by SES World Skies. Launched in 1997 it was operated in geostationary orbit at a longitude of 50.5 degrees east for around 14 years.

Intelsat 803 → NSS-5

Mission type	Communications
Operator	Intelsat → SES World Skies
COSPAR ID	1997-053A
SATCAT no.	24957
Mission duration	14 years
Spacecraft properties
Spacecraft type	AS-7000
Manufacturer	Lockheed Martin
Launch mass	3,412 kilograms (7,522 lb)
Start of mission
Launch date	September 23, 1997, 23:58 (1997-09-23UTC23:58Z) UTC[1]
Rocket	Ariane-42L H10-3
Launch site	Kourou ELA-2
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	50.5° E[2]
Semi-major axis	42,164.0 kilometres (26,199.5 mi)[2]
Perigee altitude	35,778.2 kilometres (22,231.5 mi)[2]
Apogee altitude	35,809.1 kilometres (22,250.7 mi)[2]
Inclination	3.8 degrees[2]
Period	1,436.1 minutes[2]
Epoch	May 5, 2017[2]
Transponders
Band	38 C Band, 6 Ku band
Coverage area	Pacific Ocean
Intelsat 8 ← Intelsat 802 Intelsat 804 →

Satellite

The third of six Intelsat VIII satellites to be launched, NSS-5 was built by Lockheed Martin. It was a 3,412-kilogram (7,522 lb) spacecraft. The satellite carried a double LEROS-1B apogee motor for propulsion and was equipped with 38 C Band transponders and 6 Ku band transponders, powered by 2 solar cells more batteries.^[3] It was designed for a fourteen-year service life.^[3]

Launch

The launch of NSS-5 made use of an Ariane 4 rocket flying from Guiana Space Centre, Kourou, French Guiana. The launch took place at 23:58 UTC on September 23, 1997, with the spacecraft entering a geosynchronous transfer orbit.^[1] NSS-5 subsequently fired its apogee motor to achieve geostationary orbit.

See also

• Spaceflight portal

• 1997 in spaceflight