The success of the Indian Space Research Organisation (ISRO) Monday in putting into orbit 10 satellites with a single launch is certainly a commendable achievement marking as it does the second largest number of satellites launched at one go. Now it needs to push aggressively for more contracts in this niche market.

Besides ISRO's own two primary satellites, Cartosat-2A (690 kg) and IMS-1 (83 kg), Monday's payload included seven nanosatellites (1-10 kg class) and one microsatellite (10-100 kg class) from foreign customers, which together weighed about 50 kg.

The highest number sent into orbit in one launch so far is 14 by the Russian launch vehicle DNEPR, a converted Intercontinental Ballistic Missile (ICBM), in April 2007, which included one primary payload EgyptSat 1 weighing about 100 kg, six microsatellites and seven picosatellites (less than 1 kg). The failed launch of DNEPR in July 2006 was, in fact, carrying an even larger number - 18 small satellites besides the primary Belarus satellite Belka weighing 750 kg.

With this 10-pack launch ISRO has certainly made its mark in this emerging niche market of small research satellites. University students who are seeking inexpensive access to space are building such satellites with off-the shelf components. It must, however, be added that, in terms of technology, a multiple launch of small satellites is not a major feat.

Currently only Russia, with its large number of retired missiles converted into launch vehicles, and India, with its workhorse Polar Satellite Launch Vehicle (PSLV), seems to be offering the service of launching these small satellites.

The other big players in the commercial launch business, namely the US, France (Arianespace) and China, seem to be not so keen on this market segment. There may well be good reasons for this. Given the complications of tuning the launch software, on-board guidance and the autopilot to govern the multiple satellite launch, the paltry returns (at the rate of about $10,000/kg) may not seem attractive enough for the launch service provider.