Key statistics
Satellite DELTA 1 R/B at a glance.
Uptime
18512
Days in orbit
Revolutions
≈ 14.3
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
115.0
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: 1975-027B
Object number (NORAD): 7735
Object ID (CCSDS): 7735
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 101.015 minutes
Inclination: 114.9722 deg
SMA: 7184.864 km
Apoapsis: 842.939 km
Periapsis: 770.519 km
RAAN: 135.0691 deg
Eccentricy: 0.00503972
Argument of periapsis: 307.1122 deg
Mean anomaly: 52.5361 deg
Mean motion: 14.25525287 rev/day
Mean motion (dot): 0.00000151 rev/day2
B* drag term: 0.00013686919 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 10:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 7:07 a.m. UTC
TLE line 0: 0 DELTA 1 R/B
TLE line 1: 1 07735U 75027B 25346.29693613 .00000151 00000-0 13687-3 0 9997
TLE line 2: 2 07735 114.9722 135.0691 0050397 307.1122 52.5361 14.25525287631839
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
Geodetic research satellite
DELTA 1 R/B was lifted into orbit during the mission ‘Delta 1410 | Geos 3’, on board a Delta 1410 space rocket.
The launch took place on April 9, 1975, 11:58 p.m. from Space Launch Complex 2W.
For more information about the launch, click the button.
Delta 1410 | Geos 3
Agency: N/A
Status: Launch Successful
Launch date: April 9, 1975, 11:58 p.m. UTC
Rocket: Delta 1410
Launch pad: Space Launch Complex 2W
Location: Vandenberg SFB, CA, USA
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