SSTL S1-4

NORAD 43618· COSPAR 2018-071A· Active satellite· Other / Unclassified· SSO

Launch

Launched on Sep 16, 2018 from Satish Dhawan Space Centre First Launch Pad, India aboard a PSLV-CA.

PSLV-CA | SSTL-S1 & NovaSAR-S →

Live · TLE epoch 2026-09-08 14:44 UTC

Orbit class

SSO — Sun-Synchronous (LEO at 96–102° inclination)

Operator

UK Space Agency

Country

United Kingdom

Manufacturer

—

Launched

Sep 16, 2018

Mass

—

Apogee

582 km

Perigee

580 km

Inclination

97.49°

Period

1.60 h

Altitude history

Apogee and perigee for SSTL S1-4 across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Decaying

Change

-1.6 km

Rate

-0.11 km/day

Now

580 × 582 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

One other catalogued object still in orbit from launch 2018-071 (PSLV-CA | SSTL-S1 & NovaSAR-S).

NOVASAR 1 · 43619

Sources & further reading

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