Key statistics
Satellite DELTA 1 R/B at a glance.
Uptime
21869
Days in orbit
Revolutions
≈ 14.7
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for DELTA 1 R/B.
Object identification
Identified? True
Debris? False
Object name: DELTA 1 R/B
International designator: 1966-008B
Object number (NORAD): 1983
Object ID (CCSDS): 1983
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 98.081 minutes
Inclination: 98.0332 deg
SMA: 7045.032 km
Apoapsis: 711.475 km
Periapsis: 622.319 km
RAAN: 267.5345 deg
Eccentricy: 0.00632756
Argument of periapsis: 311.6621 deg
Mean anomaly: 47.9177 deg
Mean motion: 14.68176662 rev/day
Mean motion (dot): 0.00001337 rev/day2
B* drag term: 0.00023434967 1/REarth
Two-line elements (TLE)
Creation date: Dec. 18, 2025, 2:19 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 17, 2025, 8:09 p.m. UTC
TLE line 0: 0 DELTA 1 R/B
TLE line 1: 1 01983U 66008B 25351.83998543 .00001337 00000-0 23435-3 0 9990
TLE line 2: 2 01983 98.0332 267.5345 0063276 311.6621 47.9177 14.68176662146029
Live tracking on map
Real-time ground track for satellite DELTA 1 R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object DELTA 1 R/B.
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).
DELTA 1 R/B was lifted into orbit during the mission ‘Thor Delta C | ESSA 1’, on board a Thor Delta C space rocket.
The launch took place on Feb. 3, 1966, 7:41 a.m. from Space Launch Complex 17A.
For more information about the launch, click the button.
Thor Delta C | ESSA 1
Agency: N/A
Status: Launch Successful
Launch date: Feb. 3, 1966, 7:41 a.m. UTC
Rocket: Thor Delta C
Launch pad: Space Launch Complex 17A
Location: Cape Canaveral SFS, FL, USA
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