EMISAT

Launch data: Designation  44078 / 19018A Launch date  01 Apr 2019 - 03:57 UT Launch site  Satish Dhawan, SLP Launch vehicle  PSLV-QL (C45) Mission  Sigint Earth orbit: Perigee / Apogee  736 x 758 km Eccentricity   Inclination  98.4° Period   min

Spacecraft data:

Mission details:

• India launched PSLV-C45 from Sriharikota on Apr 1, 2019. This was the first launch of the PSLV-QL variant which has 4 strapon boosters, and the first time the PS4 upper stage carried solar panels to support long-term in-orbit attached payloads.
• The main payload was EMISAT, a signals intelligence satellite for the Indian defense research agency DRDO.
• Cubesats on PSLV-C45 include:
  • BlueWalker 1, a test IoT data relay satellite for Avellan Space Technology and Science of Midland, Texas built by NanoAvionics of Vilnius, whose own test satellite, M6P, is also aboard;
  • Astrocast 0.2 is another IoT test satellite for Astrocast of Lausanne.
  • Danu Pathfinder 1 is the third in the AISTECHSAT series of ship tracking satellites from AistechSpace of Barcelona.
  • Four Lemur-2 satellites for SpireGlobal, and twenty Planet cubesats in the improved Flock 4 series.
• Preliminary data suggest that (1) the final burn of the PS4 stage may have been retrograde instead of posigrade, leading to an elliptical rather than circular final orbit and (2) two of the satellite deployments inadvertently occured only after this burn, leaving them in the PS4′s orbit rather than the higher target one.

External links:

• ISRO: Rocket and Satellite Information
• Satellite tracking (n2ya.com): Real time satellite tracking