Key statistics
Satellite ESSA 7 (TOS-E) at a glance.
Uptime
20844
Days in orbit
Revolutions
≈ 12.5
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
101.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for ESSA 7 (TOS-E).
Object identification
Identified? True
Debris? False
Object name: ESSA 7 (TOS-E)
International designator: 1968-069A
Object number (NORAD): 3345
Object ID (CCSDS): 3345
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 114.924 minutes
Inclination: 101.5137 deg
SMA: 7830.087 km
Apoapsis: 1472.969 km
Periapsis: 1430.935 km
RAAN: 221.1992 deg
Eccentricy: 0.00268407
Argument of periapsis: 357.0508 deg
Mean anomaly: 58.2267 deg
Mean motion: 12.53005226 rev/day
Mean motion (dot): -0.00000039 rev/day2
B* drag term: 0.000029783141 1/REarth
Two-line elements (TLE)
Creation date: Sept. 9, 2025, 4:47 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 8, 2025, 9:47 p.m. UTC
TLE line 0: 0 ESSA 7 (TOS-E)
TLE line 1: 1 03345U 68069A 25251.90777407 -.00000039 00000-0 29783-4 0 9996
TLE line 2: 2 03345 101.5137 221.1992 0026841 357.0508 58.2267 12.53005226609753
Live tracking on map
Real-time ground track for satellite ESSA 7 (TOS-E).
In-orbit conjunctions
A list of the most updated potential collisions computed for object ESSA 7 (TOS-E).
Associated space launch
The ESSA series was the second generation of US meterological satellites after the TIROS (Television & Infra-Red Observation Satellite) series. They were also called OT (Operational TIROS), TOS (TIROS Operational Satellite).
ESSA 7 (TOS-E) was lifted into orbit during the mission ‘Thor Delta N | ESSA 7’, on board a Thor Delta N space rocket.
The launch took place on Aug. 16, 1968, 11:24 a.m. from Space Launch Complex 2E.
For more information about the launch, click the button.
Thor Delta N | ESSA 7
Agency: N/A
Status: Launch Successful
Launch date: Aug. 16, 1968, 11:24 a.m. UTC
Rocket: Thor Delta N
Launch pad: Space Launch Complex 2E
Location: Vandenberg SFB, CA, USA
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