TeLEOS-1 is Singapore's first commercial Earth observation satellite launched on a PSLV-C29 vehicle of the Indian Space Research Organisation from Satish Dhawan Space Centre at Sriharikota on 16 December 2015 along with five other satellites developed in Singapore.

The satellite is aimed at providing high temporal imagery and geospatial solutions for homeland security and border control; maritime monitoring and disaster management around the equatorial belt.

In February 2014, Two independent suppliers of small and microsatellites – ATK Space Systems Inc. of Beltsville MD, United States and ST EE-SatComS - entered into an commercial agreement for the distribution of satellite imagery to the world market.

The satellite is equipped with electro-optical camera payload that is capable of performing imaging at ground resolution of down to one metre.

The launch took place at 6 PM local time from Satish Dhawan Space Centre in the southeastern India.