Key statistics
Satellite TRANSIT 4B at a glance.
Uptime
23245
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: 105.591 minutes
Inclination: 32.438 deg
SMA: 7400.225 km
Apoapsis: 1096.596 km
Periapsis: 947.584 km
RAAN: 292.8399 deg
Eccentricy: 0.0100681
Argument of periapsis: 110.2747 deg
Mean anomaly: 250.8728 deg
Mean motion: 13.63751999 rev/day
Mean motion (dot): 0.00000055 rev/day2
B* drag term: 0.000040182 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 10:46 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 4:24 p.m. UTC
TLE line 0: 0 TRANSIT 4B
TLE line 1: 1 202U 61031A 25187.68341217 .00000055 00000-0 40182-4 0 9999
TLE line 2: 2 202 32.4380 292.8399 0100681 110.2747 250.8728 13.63751999173877
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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