We present the statistical properties of the first version of the Cold Core Catalogue of Planck Objects ( C3PO ) , in terms of their spatial distribution , temperature , distance , mass , and morphology .
We also describe the statistics of the Early Cold Core Catalogue ( ECC ) that is a subset of the complete catalogue , and that contains only the 915 most reliable detections .
ECC is delivered as a part of the Early Release Compact Source Catalogue ( ERCSC ) .
We have used the CoCoCoDeT algorithm to extract about 10 thousand cold sources .
The method uses the IRAS 100 \mu m data as a warm template that is extrapolated to the Planck bands and subtracted from the signal , leading to a detection of the cold residual emission .
We have used cross-correlation with ancillary data to increase the reliability of our sample , and to derive other key properties such as distance and mass .

Temperature and dust emission spectral index values are derived using the fluxes in the IRAS 100 \mu m band and the three highest frequency Planck bands .
The range of temperatures explored by the catalogue spans from 7 K to 17 K , and peaks around 13 K. Data are not consistent with a constant value of the associated spectral index \beta over the all temperature range . \beta ranges from 1.4 to 2.8 with a mean value around 2.1 , and several possible scenarios are possible , including \beta ( T ) and the effect of multiple temperature components folded into the measurements .

For one third of the objects the distances are obtained using various methods such as the extinction signature , or the association with known molecular complexes or Infra-Red Dark Clouds .
Most of the detections are within 2 kpc in the Solar neighbourhood , but a few are at distances greater than 4 kpc .
The cores are distributed over the whole range of longitude and latitude , from the deep Galactic plane , despite the confusion , to high latitudes ( > 30 ^ { \circ } ) .
The associated mass estimates derived from dust emission range from 1 to 10 ^ { 5 } solar masses .
Using their physical properties such as temperature , mass , luminosity , density and size , these cold sources are shown to be cold clumps , defined as the intermediate cold sub-structures between clouds and cores .
These cold clumps are not isolated but mostly organized in filaments associated with molecular clouds .
The Cold Core Catalogue of Planck Objects ( C3PO ) is the first unbiased all-sky catalogue of cold compact objects and contains 10783 objects .
It gives an unprecedented statistical view to the properties of these potential pre-stellar clumps and offers a unique possibility for their classification in terms of their intrinsic properties and environment .