Key statistics
Satellite ITALSAT 1 at a glance.
Uptime
12705
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
14.6
Latest
Satellite identification and parameters
Extended collection of information and parameters for ITALSAT 1.
Object identification
Identified? True
Debris? False
Object name: ITALSAT 1
International designator: 1991-003A
Object number (NORAD): 21055
Object ID (CCSDS): 21055
Country: ITALY (IT)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1440.516 minutes
Inclination: 14.6068 deg
SMA: 42251.192 km
Apoapsis: 35905.92 km
Periapsis: 35840.195 km
RAAN: 353.2635 deg
Eccentricy: 0.00077779
Argument of periapsis: 45.5478 deg
Mean anomaly: 22.6235 deg
Mean motion: 0.99964157 rev/day
Mean motion (dot): -0.00000345 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Oct. 28, 2025, 2:18 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 27, 2025, 5:54 p.m. UTC
TLE line 0: 0 ITALSAT 1
TLE line 1: 1 21055U 91003A 25300.74635762 -.00000345 00000-0 00000-0 0 9999
TLE line 2: 2 21055 14.6068 353.2635 0007778 45.5478 22.6235 0.99964157114768
Live tracking on map
Real-time ground track for satellite ITALSAT 1.
Associated space launch
Italy's first operational communications satellite was launched 15 January 1991 by an Ariane-44L H10 booster. Developed by a contractor team led by Alenia Spazio, Italsat carries ten active transponders plus five spares for 30/20 GHz and 50/40 GHz links with a capacity of 12,000 telephone circuits.
ITALSAT 1 was lifted into orbit during the mission ‘Ariane 44L | Italsat 1’, on board a Ariane 44L space rocket.
The launch took place on Jan. 15, 1991, 11:10 p.m. from Ariane Launch Area 2.
For more information about the launch, click the button.
Ariane 44L | Italsat 1
Agency: N/A
Status: Launch Successful
Launch date: Jan. 15, 1991, 11:10 p.m. UTC
Rocket: Ariane 44L
Launch pad: Ariane Launch Area 2
Location: Guiana Space Centre, French Guiana
...
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