SROSS-C

The first satellite placed in orbit by India's ASLV rocket, in May 1992; its low orbit limited it to about two months of gamma-ray and ionosphere studies.

Re-entered Earth's atmosphere on 14 July 1992, according to the public satellite catalogue.

What it did

SROSS-C (Stretched Rohini Satellite Series) carried two science experiments. A Gamma Ray Burst experiment watched for gamma-ray bursts in the 20–3000 keV energy range. A Retarding Potential Analyser studied the ionosphere.

Spacecraft

SROSS-C weighed 106.1 kg and had 45 watts of power. It was spin-stabilised, used a magnetic torquer to control its orientation, and had a hydrazine reaction control system. It communicated on S-band and VHF.

Launch

The ASLV-D3 rocket launched SROSS-C from SHAR Centre, Sriharikota, on 20 May 1992. It was the first satellite that ASLV put into orbit successfully. The two earlier ASLV flights, carrying SROSS-1 in 1987 and SROSS-2 in 1988, were unsuccessful.

Fate

The orbit reached was lower than planned, only 267 × 391 km. Because of the low orbit its life was much shorter than planned: it re-entered in July 1992, about two months after launch.

Sources

  1. SROSS 3 — satellite catalogue record (NORAD 21968) — CelesTrak
  2. SROSS-C — ISRO
  3. SROSS C, C2 — Gunter's Space Page
  4. List of DoS/ISRO satellites launched so far (10 April 2025) — ISRO