Key statistics
Satellite DELTA 2 R/B(1) at a glance.
Uptime
10040
Days in orbit
Revolutions
≈ 13.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
26.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for DELTA 2 R/B(1).
Object identification
Identified? True
Debris? False
Object name: DELTA 2 R/B(1)
International designator: 1998-002B
Object number (NORAD): 25135
Object ID (CCSDS): 25135
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 105.671 minutes
Inclination: 26.8848 deg
SMA: 7403.96 km
Apoapsis: 1288.797 km
Periapsis: 762.853 km
RAAN: 54.6348 deg
Eccentricy: 0.0355178
Argument of periapsis: 44.4508 deg
Mean anomaly: 54.3522 deg
Mean motion: 13.62720103 rev/day
Mean motion (dot): 0.00000155 rev/day2
B* drag term: 0.000038458 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 10:36 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 8:18 p.m. UTC
TLE line 0: 0 DELTA 2 R/B(1)
TLE line 1: 1 25135U 98002B 25187.84585826 .00000155 00000-0 38458-4 0 9997
TLE line 2: 2 25135 26.8848 54.6348 0355178 44.4508 54.3522 13.62720103370037
Live tracking on map
Real-time ground track for satellite DELTA 2 R/B(1).
In-orbit conjunctions
A list of the most updated potential collisions computed for object DELTA 2 R/B(1).
Associated space launch
Skynet 4 was the third generation of UK Ministry of Defense communications satellites. They provided jam-proof communications service between fixed and mobile land and sea-based ground stations.
DELTA 2 R/B(1) was lifted into orbit during the mission ‘Delta II | Skynet 4D’, on board a Delta II space rocket.
The launch took place on Jan. 10, 1998, 12:32 a.m. from Space Launch Complex 17B.
For more information about the launch, click the button.
Delta II | Skynet 4D
Agency: N/A
Status: Launch Successful
Launch date: Jan. 10, 1998, 12:32 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.
