Key statistics
Satellite TRANSIT 4A at a glance.
Uptime
23543
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: 103.427 minutes
Inclination: 66.8102 deg
SMA: 7298.76 km
Apoapsis: 972.195 km
Periapsis: 869.055 km
RAAN: 348.1817 deg
Eccentricy: 0.00706558
Argument of periapsis: 40.2101 deg
Mean anomaly: 320.4175 deg
Mean motion: 13.92288182 rev/day
Mean motion (dot): 0.00000067 rev/day2
B* drag term: 0.00010939433 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 10:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 6:36 a.m. UTC
TLE line 0: 0 TRANSIT 4A
TLE line 1: 1 00116U 61015A 25346.27534509 .00000067 00000-0 10939-3 0 9994
TLE line 2: 2 00116 66.8102 348.1817 0070656 40.2101 320.4175 13.92288182270686
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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