Key statistics
Satellite DELTA 1 R/B at a glance.
Uptime
20882
Days in orbit
Revolutions
≈ 9.3
Per day
Orbit
HEO
HEO
Inclination
120.7
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: 1968-055B
Object number (NORAD): 3315
Object ID (CCSDS): 3315
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 155.56 minutes
Inclination: 120.6577 deg
SMA: 9581.319 km
Apoapsis: 5732.252 km
Periapsis: 674.116 km
RAAN: 182.2961 deg
Eccentricy: 0.26395821
Argument of periapsis: 130.4232 deg
Mean anomaly: 13.5287 deg
Mean motion: 9.25688406 rev/day
Mean motion (dot): 0.00000131 rev/day2
B* drag term: 0.00037394694 1/REarth
Two-line elements (TLE)
Creation date: Sept. 4, 2025, 10:13 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 4, 2025, 7:27 a.m. UTC
TLE line 0: 0 DELTA 1 R/B
TLE line 1: 1 03315U 68055B 25247.31078479 .00000131 00000-0 37395-3 0 9990
TLE line 2: 2 03315 120.6577 182.2961 2639582 130.4232 13.5287 9.25688406915088
Live tracking on map
Real-time ground track for satellite DELTA 1 R/B.
Associated space launch
The RAE A (Radio Astronomy Explorer A) spacecraft measured the intensity of celestial radio sources, particularly the sun, as a function of time, direction, and frequency (0.2 to 20 MHz).
DELTA 1 R/B was lifted into orbit during the mission ‘Thor Delta J | RAE 1’, on board a Thor Delta J space rocket.
The launch took place on July 4, 1968, 5:26 p.m. from Space Launch Complex 2E.
For more information about the launch, click the button.
Thor Delta J | RAE 1
Agency: N/A
Status: Launch Successful
Launch date: July 4, 1968, 5:26 p.m. UTC
Rocket: Thor Delta J
Launch pad: Space Launch Complex 2E
Location: Vandenberg SFB, CA, USA
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