Key statistics
Satellite SIRIO at a glance.
Uptime
17643
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
7.6
Latest
Satellite identification and parameters
Extended collection of information and parameters for SIRIO.
Object identification
Identified? True
Debris? False
Object name: SIRIO
International designator: 1977-080A
Object number (NORAD): 10294
Object ID (CCSDS): 10294
Country: ITALY (IT)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 1436.09 minutes
Inclination: 7.6402 deg
SMA: 42164.588 km
Apoapsis: 35807.812 km
Periapsis: 35765.094 km
RAAN: 300.5706 deg
Eccentricy: 0.00050657
Argument of periapsis: 162.8712 deg
Mean anomaly: 210.5062 deg
Mean motion: 1.00272299 rev/day
Mean motion (dot): -0.0000009 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 10:23 a.m. UTC
TLE line 0: 0 SIRIO
TLE line 1: 1 10294U 77080A 25347.43273573 -.00000090 00000-0 00000-0 0 9993
TLE line 2: 2 10294 7.6402 300.5706 0005066 162.8712 210.5062 1.00272299116064
Live tracking on map
Real-time ground track for satellite SIRIO.
Associated space launch
The SIRIO satellite is an experimental geostationary artificial telecommunications satellite, the first to be designed and built in Italy.
SIRIO was lifted into orbit during the mission ‘Delta 2313 | Sirio 1’, on board a Delta 2313 space rocket.
The launch took place on Aug. 25, 1977, 11:49 p.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Delta 2313 | Sirio 1
Agency: N/A
Status: Launch Successful
Launch date: Aug. 25, 1977, 11:49 p.m. UTC
Rocket: Delta 2313
Launch pad: Space Launch Complex 17B
Location: Cape Canaveral SFS, FL, USA
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