Piggybacked on PSLV: BRITE-Austria (aka TUGSAT-1), UniBRITE(aka CanX-3A) (seemingly all on polar orbits)
BRITE-Austria and UniBRITE are also scheduled to launch on PSLV-C20, into the same 800 km, dawn-dusk, sun synchronous orbit as the primary satellites.
[Source.]ISRO and Antrix may refer to these spacecraft as NLS-8.1 and NLS-8.2. The NLS designation stands for the "Nanosatellite Launch Service" launch agreement that the Space Flight Laboratory at the University of Toronto (UTIAS/SFL) arranged with Antrix. There may be multiple spacecraft covered by the agreement (for example, there were
6 satellites in NLS4 on PSLV-C9 in 2008). The NLS designation also refers to the satellite and its XPOD separation system. The XPODs are provided by UTIAS/SFL and they remains attached to the upper stage (PS4). Hence, NLS-8.1 is BRITE-Austria and its XPOD, NLS-8.2 is UniBRITE and its XPOD, etc. Also, Antrix often quotes the combined mass of the satellite and separation system, since that is what they are launching to orbit.
UniBRITE and BRiTE-Austria are part of the BRITE Constellation, short for "
BRIght-star
Target
Explorer Constellation", a group of 6 kg, 20x20x20 cm nanosatellites who purpose is to photometrically measure low-level oscillations and temperature variations in the sky's 286 stars brighter than visual magnitude 3.5. The BRITE constellation is sometimes referred to as "CanX-3" or "the CanX-3 constellation" for historical reasons. Currently, six satellites are planned in the group: two are funded by the Austrian government -- UniBRITE (CanX-3a), and
BRITE-Austria (CanX-3b or TUGSAT-1); two by the Canadian government -- CanX-3c and 3d; and two by the
Polish government. The Austrian and Polish BRITE satellites are built as collaborations between SFL and the respective organizations.
I hope that clears up some of the multiple names used for these satellites. All that to say that the first two BRITE satellites (BRITE-Austria and UniBRITE) will be launching on PSLV-C20.