Key statistics
Satellite TRANSIT 4A at a glance.
Uptime
23485
Days in orbit
Revolutions
≈ 13.9
Per day
Orbit
LEO
Low Earth Orbit
Inclination
66.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for TRANSIT 4A.
Object identification
Identified? True
Debris? False
Object name: TRANSIT 4A
International designator: 1961-015A
Object number (NORAD): 116
Object ID (CCSDS): 116
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 103.428 minutes
Inclination: 66.8072 deg
SMA: 7298.822 km
Apoapsis: 970.712 km
Periapsis: 870.663 km
RAAN: 128.4349 deg
Eccentricy: 0.00685376
Argument of periapsis: 84.0371 deg
Mean anomaly: 276.8514 deg
Mean motion: 13.92270395 rev/day
Mean motion (dot): 0.00000079 rev/day2
B* drag term: 0.00011933938 1/REarth
Two-line elements (TLE)
Creation date: Oct. 16, 2025, 2:37 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 15, 2025, 10:49 p.m. UTC
TLE line 0: 0 TRANSIT 4A
TLE line 1: 1 00116U 61015A 25288.95129860 .00000079 00000-0 11934-3 0 9993
TLE line 2: 2 00116 66.8072 128.4349 0068538 84.0371 276.8514 13.92270395262704
Live tracking on map
Real-time ground track for satellite TRANSIT 4A.
Associated space launch
TRANSIT 4A was lifted into orbit during the mission ‘Thor DM-21 Ablestar | Transit 4A & Injun-1 & Solrad 3’, on board a Thor DM-21 Ablestar space rocket.
The launch took place on June 29, 1961, 4:23 a.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Thor DM-21 Ablestar | Transit 4A & Injun-1 & Solrad 3
Agency: N/A
Status: Launch Successful
Launch date: June 29, 1961, 4:23 a.m. UTC
Rocket: Thor DM-21 Ablestar
Launch pad: Space Launch Complex 17B
Location: Cape Canaveral SFS, FL, USA
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