Key statistics
Satellite DELTA 2 R/B at a glance.
Uptime
12505
Days in orbit
Revolutions
≈ 12.6
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
24.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for DELTA 2 R/B.
Object identification
Identified? True
Debris? False
Object name: DELTA 2 R/B
International designator: 1991-028B
Object number (NORAD): 21228
Object ID (CCSDS): 21228
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 114.716 minutes
Inclination: 23.9933 deg
SMA: 7820.641 km
Apoapsis: 2329.914 km
Periapsis: 555.099 km
RAAN: 280.9719 deg
Eccentricy: 0.1134699
Argument of periapsis: 16.6783 deg
Mean anomaly: 346.8056 deg
Mean motion: 12.55275999 rev/day
Mean motion (dot): 0.00000262 rev/day2
B* drag term: 0.00005331 1/REarth
Two-line elements (TLE)
Creation date: July 7, 2025, 6:34 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 7, 2025, 11:32 a.m. UTC
TLE line 0: 0 DELTA 2 R/B
TLE line 1: 1 21228U 91028B 25188.48112645 .00000262 00000-0 53310-4 0 9996
TLE line 2: 2 21228 23.9933 280.9719 1134699 16.6783 346.8056 12.55275999567099
Live tracking on map
Real-time ground track for satellite DELTA 2 R/B.
Associated space launch
The ASC series consisted of three satellites built by GE Astro-Space for Contel ASC and carried 18 C-band and 6 Ku-band transponders for TV news and interactive data transmissions to private networks and small terminals.
DELTA 2 R/B was lifted into orbit during the mission ‘Delta II | ASC 2’, on board a Delta II space rocket.
The launch took place on April 13, 1991, 12:09 a.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Delta II | ASC 2
Agency: N/A
Status: Launch Successful
Launch date: April 13, 1991, 12:09 a.m. UTC
Rocket: Delta II
Launch pad: Space Launch Complex 17B
Location: Cape Canaveral SFS, FL, USA
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