Key statistics
Satellite DELTA 2 R/B at a glance.
Uptime
12666
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: 114.698 minutes
Inclination: 23.9978 deg
SMA: 7819.81 km
Apoapsis: 2328.339 km
Periapsis: 555.011 km
RAAN: 260.6007 deg
Eccentricy: 0.11338693
Argument of periapsis: 222.1907 deg
Mean anomaly: 128.5611 deg
Mean motion: 12.55476123 rev/day
Mean motion (dot): 0.00000353 rev/day2
B* drag term: 0.000078155915 1/REarth
Two-line elements (TLE)
Creation date: Dec. 16, 2025, 2:19 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 15, 2025, 7:41 p.m. UTC
TLE line 0: 0 DELTA 2 R/B
TLE line 1: 1 21228U 91028B 25349.82037632 .00000353 00000-0 78156-4 0 9991
TLE line 2: 2 21228 23.9978 260.6007 1133869 222.1907 128.5611 12.55476123587381
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
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
