, confirmed excellent performance of the on-board camera.
Cartosat-2's
panchromatic camera was able to produce images better than 1 metre in resolution,[6] compared to the 82 cm panchromatic resolution offered by the Ikonos satellite.[7] India had previously purchased images from Ikonos at about US$20 per square kilometre; the use of Cartosat-2 will provide imagery at 20 times lower cost. At the time of Cartosat-2's launch, India was buying about ₹20 crore per year from Ikonos.[8]
End of life
After 12 years of service in a circular orbit of almost 630 km altitude Cartosat-2 would have taken about 30 years to de-orbit naturally. With 25 kg of propellant remaining it was decided by ISRO's Directorate for Space Situational Awareness and Management (DSSAM) to decommission the spacecraft and lower the perigee using left-over propellant so that it meets United Nations Office for Outer Space Affairs (UNOOSA)'s space debris mitigation guidelines. Between 6 March to 3 September 2020, perigee was lowered incrementally by performing 26 perigee reduction burns putting the spacecraft in 630 × 390 km orbit. This was ISRO's first low Earth orbit satellite to be decommissioned in this manner. Orbit of Cartosat-2 is expected to decay naturally within 10 years.[9][10]
The satellite re-entered Earth's atmosphere and was subsequently destroyed on 14 February 2024 at 10:18 UTC over the southern Indian Ocean.[11][12]
^"Instrument: OSA". World Meteorological Organization. Retrieved 11 November 2017.
^Venkat, Archana (11 January 2007). "PSLV launch successful". The Hindu. Business Line. Retrieved 11 November 2017.
^"Post Mission Disposal of Cartosat-2: Compliance with IADC Guidelines". space-debris-conference.sdo.esoc.esa.int. Archived from the original on 20 April 2021. Retrieved 20 April 2021. After providing uninterrupted payload services for 12 years, it was decided to decommission the satellite in late 2019 following on-board subsystem degradation. At an orbit of 630 km altitude, the lifetime of Cartosat-2 was estimated to be more than 30 years. The satellite also had about 26 kg left-over propellant. Although the satellite was not specifically designed for end-of-life de-orbiting, it was proposed by ISRO's Directorate for Space Situational Awareness and Management (DSSAM) to lower the perigee of the satellite, so as to limit its post mission orbital life time in compliance with the 25-year guideline of IADC for post mission disposal of LEO objects, and at the same time, deplete the left-over fuel to mitigate any accidental break-up risk. The de-orbiting operations were planned and executed by the operational team at ISRO Telemetry, Tracking and Command Network (ISTRAC) in close coordination with mission and subsystem designers from various ISRO centres. Starting with the first perigee-lowering manoeuvre on 6 March 2020, 26 perigee reduction burns were conducted till 3 September 2020 to progressively lower the perigee below 400 km.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
This article incorporates text from this source, which is in the public domain.
