Key statistics
Satellite TRANSIT 4B at a glance.
Uptime
23405
Days in orbit
Revolutions
≈ 13.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
32.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for TRANSIT 4B.
Object identification
Identified? True
Debris? False
Object name: TRANSIT 4B
International designator: 1961-031A
Object number (NORAD): 202
Object ID (CCSDS): 202
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 105.589 minutes
Inclination: 32.4361 deg
SMA: 7400.145 km
Apoapsis: 1097.128 km
Periapsis: 946.892 km
RAAN: 211.6036 deg
Eccentricy: 0.01015086
Argument of periapsis: 245.5306 deg
Mean anomaly: 113.4699 deg
Mean motion: 13.63774098 rev/day
Mean motion (dot): 0.00000073 rev/day2
B* drag term: 0.000058784413 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, 3:41 p.m. UTC
TLE line 0: 0 TRANSIT 4B
TLE line 1: 1 00202U 61031A 25347.65398241 .00000073 00000-0 58784-4 0 9990
TLE line 2: 2 00202 32.4361 211.6036 0101509 245.5306 113.4699 13.63774098195652
Live tracking on map
Real-time ground track for satellite TRANSIT 4B.
Associated space launch
TRANSIT 4B was lifted into orbit during the mission ‘Thor DM-21 Ablestar | Transit 4B & TRAAC’, on board a Thor DM-21 Ablestar space rocket.
The launch took place on Nov. 15, 1961, 10:26 p.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Thor DM-21 Ablestar | Transit 4B & TRAAC
Agency: N/A
Status: Launch Successful
Launch date: Nov. 15, 1961, 10:26 p.m. UTC
Rocket: Thor DM-21 Ablestar
Launch pad: Space Launch Complex 17B
Location: Cape Canaveral SFS, FL, USA
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