Key statistics
Satellite DELTA 1 R/B at a glance.
Uptime
20821
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: 155.563 minutes
Inclination: 120.6665 deg
SMA: 9581.445 km
Apoapsis: 5732.958 km
Periapsis: 673.662 km
RAAN: 96.4913 deg
Eccentricy: 0.2640153
Argument of periapsis: 105.3386 deg
Mean anomaly: 345.271 deg
Mean motion: 9.2567008 rev/day
Mean motion (dot): 0.00000076 rev/day2
B* drag term: 0.00026109 1/REarth
Two-line elements (TLE)
Creation date: July 5, 2025, 5:45 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 5, 2025, 2:09 p.m. UTC
TLE line 0: 0 DELTA 1 R/B
TLE line 1: 1 03315U 68055B 25186.59012859 .00000076 00000-0 26109-3 0 9991
TLE line 2: 2 03315 120.6665 96.4913 2640153 105.3386 345.2710 9.25670080909466
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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