Key statistics
Satellite GREB at a glance.
Uptime
22564
Days in orbit
Revolutions
≈ 14.0
Per day
Orbit
LEO
Low Earth Orbit
Inclination
69.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for GREB.
Object identification
Identified? True
Debris? False
Object name: GREB
International designator: 1964-001E
Object number (NORAD): 731
Object ID (CCSDS): 731
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 103.133 minutes
Inclination: 69.9063 deg
SMA: 7284.912 km
Apoapsis: 918.009 km
Periapsis: 895.544 km
RAAN: 61.3833 deg
Eccentricy: 0.00154187
Argument of periapsis: 326.0866 deg
Mean anomaly: 33.9252 deg
Mean motion: 13.96260144 rev/day
Mean motion (dot): 0.00000082 rev/day2
B* drag term: 0.000098276986 1/REarth
Two-line elements (TLE)
Creation date: Oct. 21, 2025, 3:26 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 20, 2025, 7:15 p.m. UTC
TLE line 0: 0 GREB
TLE line 1: 1 00731U 64001E 25293.80218247 .00000082 00000-0 98277-4 0 9992
TLE line 2: 2 00731 69.9063 61.3833 0015419 326.0866 33.9252 13.96260144144167
Live tracking on map
Real-time ground track for satellite GREB.
Associated space launch
Poppy was the follow-on ELINT system, which succeeded the Grab ELINT satellite system.
GREB was lifted into orbit during the mission ‘Thor SLV-2A Agena D | Poppy 5A, 5B & 5C’, on board a Thor SLV-2A Agena D space rocket.
The launch took place on Jan. 11, 1964, 8:07 p.m. from Space Launch Complex 1E.
For more information about the launch, click the button.
Thor SLV-2A Agena D | Poppy 5A, 5B & 5C
Agency: N/A
Status: Launch Successful
Launch date: Jan. 11, 1964, 8:07 p.m. UTC
Rocket: Thor SLV-2A Agena D
Launch pad: Space Launch Complex 1E
Location: Vandenberg SFB, CA, USA
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