SMDC ONE 2.4
Launch
Launched on Dec 6, 2013 from Space Launch Complex 3E, United States of America aboard a Atlas V 501.
Atlas V 501 | NROL-39 (USA-247) →Live · TLE epoch 2026-10-23 23:52 UTC
Orbit class
LEO — Low Earth Orbit (circular, < 2,000 km)
Operator
United States Government
Country
United States
Manufacturer
—
Launched
Dec 6, 2013
Mass
—
Apogee
599 km
Perigee
413 km
Inclination
120.49°
Period
1.58 h
Altitude history
Apogee and perigee for SMDC ONE 2.4 across 59 days of archived orbital elements (60 element sets, one per day).
Trend
Decaying
Change
-5.9 km
Rate
-0.10 km/day
Now
413 × 599 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.
Launched with
3 other catalogued objects still in orbit from launch 2013-072 (Atlas V 501 | NROL-39 (USA-247)).
- ALICE · 39467
- TACSAT 6 · 39473
- SMDC ONE 2.3 · 39474
Sources & further reading
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