Key statistics
Satellite DELTA 1 DEB at a glance.
Uptime
21625
Days in orbit
Revolutions
≈ 12.7
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
100.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for DELTA 1 DEB.
Object identification
Identified? True
Debris? True
Object name: DELTA 1 DEB
International designator: 1966-087D
Object number (NORAD): 2775
Object ID (CCSDS): 2775
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Period: 113.235 minutes
Inclination: 100.9243 deg
SMA: 7753.195 km
Apoapsis: 1472.09 km
Periapsis: 1278.03 km
RAAN: 357.3575 deg
Eccentricy: 0.0125148
Argument of periapsis: 143.2322 deg
Mean anomaly: 9.2032 deg
Mean motion: 12.71691346 rev/day
Mean motion (dot): -0.00000011 rev/day2
B* drag term: 0.00014659212 1/REarth
Two-line elements (TLE)
Creation date: Dec. 16, 2025, 2:19 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 15, 2025, 12:07 p.m. UTC
TLE line 0: 0 DELTA 1 DEB
TLE line 1: 1 02775U 66087D 25349.50513472 -.00000011 00000-0 14659-3 0 9999
TLE line 2: 2 02775 100.9243 357.3575 0125148 143.2322 9.2032 12.71691346746985
Live tracking on map
Real-time ground track for satellite DELTA 1 DEB.
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 DEB was lifted into orbit during the mission ‘Thor Delta E | ESSA 3’, on board a Thor Delta E space rocket.
The launch took place on Oct. 2, 1966, 10:39 a.m. from Space Launch Complex 2E.
For more information about the launch, click the button.
Thor Delta E | ESSA 3
Agency: N/A
Status: Launch Successful
Launch date: Oct. 2, 1966, 10:39 a.m. UTC
Rocket: Thor Delta E
Launch pad: Space Launch Complex 2E
Location: Vandenberg SFB, CA, USA
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