Key statistics
Satellite DELTA 2 R/B(1) at a glance.
Uptime
9912
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
31.4
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: 1998-061C
Object number (NORAD): 25510
Object ID (CCSDS): 25510
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 99.763 minutes
Inclination: 31.4362 deg
SMA: 7125.367 km
Apoapsis: 965.659 km
Periapsis: 528.805 km
RAAN: 318.1639 deg
Eccentricy: 0.03065485
Argument of periapsis: 277.4496 deg
Mean anomaly: 79.1405 deg
Mean motion: 14.43417259 rev/day
Mean motion (dot): 0.00002763 rev/day2
B* drag term: 0.00043973624 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, 4:59 a.m. UTC
TLE line 0: 0 DELTA 2 R/B(1)
TLE line 1: 1 25510U 98061C 25346.20809448 .00002763 00000-0 43974-3 0 9990
TLE line 2: 2 25510 31.4362 318.1639 0306549 277.4496 79.1405 14.43417259424591
Live tracking on map
Real-time ground track for satellite DELTA 2 R/B(1).
Associated space launch
DS1 (Deep Space 1) was a mission to test high risk technologies like an ion-engine and autonomous operation. It was the first mission funded by NASA under the 'New Millennium' program.
DELTA 2 R/B(1) was lifted into orbit during the mission ‘Delta 7326-9.5 | Deep Space 1’, on board a Delta 7326-9.5 space rocket.
The launch took place on Oct. 24, 1998, 12:08 p.m. from Space Launch Complex 17A.
For more information about the launch, click the button.
Delta 7326-9.5 | Deep Space 1
Agency: N/A
Status: Launch Successful
Launch date: Oct. 24, 1998, 12:08 p.m. UTC
Rocket: Delta 7326-9.5
Launch pad: Space Launch Complex 17A
Location: Cape Canaveral SFS, FL, USA
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