EDP Sciences
Gaia Data Release 1
Press Release
Free Access

Table 1

Basic statistics on the contents of Gaia DR1.

Source numbers

Total number of sources 1 142 679 769
No. of primary (TGAS) sources 2 057 050
 Hipparcos 93 635
Tycho-2 (excluding Hipparcos stars) 1 963 415
No. of secondary sources 1 140 622 719
No. of sources with light curves 3194
 Cepheids 599
 RR Lyrae 2595

Magnitude distribution percentiles (G)

0.135% 11.2
2.275% 14.5
15.866% 17.1
50% 19.0
84.134% 20.1
97.725% 20.7
99.865% 21.0

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.