DELTA 1 R/B
Launch
Launched on Nov 18, 1989 from Space Launch Complex 2W, United States of America aboard a Delta 5920-8.
Delta 5920-8 | COBE →Live · TLE epoch 2026-10-23 17:05 UTC
Orbit class
SSO — Sun-Synchronous (LEO at 96–102° inclination)
Operator
United States Government
Country
United States
Manufacturer
—
Launched
Nov 18, 1989
Mass
—
Apogee
777 km
Perigee
677 km
Inclination
97.07°
Period
1.65 h
Altitude history
Apogee and perigee for DELTA 1 R/B across 148 days of archived orbital elements (150 element sets, one per day).
Trend
Stable
Change
-0.3 km
Rate
-0.00 km/day
Now
677 × 777 km
Apogee Perigee
Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.
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