About Pratham

'Pratham' is the first satellite under IIT Bombay Student Satellite Project. The plan was to build a fully functional microsatellite which would then be launched by the Indian Space Research Organisation (ISRO). This is entirely a student initiative with mentorship provided by ISRO scientists and IIT Bombay Faculty. The satellite will fit in a 30.5cm X 33.5cm X 46.6cm cube and will weigh 10.15kg. excluding FE Ring.

For the relevance of our satellite to the student community, we will be transmitting satellite data when the satellite passes over India so that any interested university with a small ground station will not only be able to detect the beacon signal from our satellite but will also be able to measure TEC above their ground station. This is proposed to spread awareness among the student community about this exciting field. The Pratham Project presents a wonderful learning experience to the students of working on a real life multi-disciplinary complex system. A lot of importance is attached to learning, this is evident from the success criterion.

The Pratham Satellite

Mission Statement of Pratham

'Pratham' had a Four-fold Mission Statement:

  • Enabling students and faculty to gain knowledge and experience in the field of Satellite and Space technology.
  • Empowering the Satellite Team with the skills to develop the Satellite through various phases of Design, Analysis, Fabrication and Testing until the Flight Model is made.
  • Launching the satellite into orbit and measuring Total Electron Count of the Ionosphere.
  • Involving students from other universities in our Satellite mission by building ground stations in their universities.

The Pratham Project presents a wonderful learning experience to the students of working on a real life multi-disciplinary complex system. Learning enhancement through CDIO (Conceiving – Designing – Implementing – Operating) has been one of the major objectives of this project. Since a lot of importance is attached to learning, it is duly visible in the Success Criterion for the Mission.

Success Criterion

Mission Success
Flight Model ready
Beacon Signal Recieved
TEC Measurements at IITB
Satellite Functional for 4 months

SolidWorks rendering of Pratham satellite

Tracking Pratham

The Ham community is very critical to the success of any satellite working in the amateur band. We are also looking forward to hearing from Hams around the world for beacon and telemetry reports.

Pratham has been assigned the Identifier - 41783 by NORAD.
It can now be tracked using n2yo at http://www.n2yo.com/satellite/?s=41783

Here are the details required to track the satellite.

Beacon Telemetry
Frequency 145.98 MHz 437.455 MHz
Modulation CW Morse code FSK, AX.25
Data rate 35 wpm 1200 bps
EIRP 23 dbm 18 dbm
Region transmitted over Whole World India and France

Listen to one of the First Beacon signals received from Pratham


Please share with us the Downlink of Pratham received by you at manvidhawan1993@gmail.com or ratnesh1607@gmail.com

The following is the TLE data for the satellite:

1 41785U 16059C 16271.69947962 .00004609 00000-0 88934-3 0 9999
2 41785 98.2049 329.2442 0030494 263.1090 96.7138 14.63229411 193

Technical Details at a Glance

Mission ObjectiveTo estimate Total Electron Count(TEC) over India and Paris with a resolution of 1km x 1km location grid
Payload InstrumentTwo monopole antennas transmitting at 145.98 MHz and 437.45 MHz
Structure Dimensions: 30.5cm X 33.5cm X 46.6cm
Mass: 10.15 kg
Side panels: Aluminum alloy (Al 6061)
Monopoles: 3
Sensors and ActuatorsGPS
RF CommunicationTransmission in the Amatuer Band
Antennas: Monopoles- Uplink (UHF),
Downlink (UHF) and Beacon (VHF)
Altitude670 Km
Downlink Frequency437.455MHz and 145.98MHz
Uplink Frequency 437.455 MHz
Power source Li-ion battery and 4 solar panels
Orbit Polar sun-synchronous, 670 km
Passage over India: around 11.30 IST
Mission Life 4 months