Sky Database for Objects in Time-Domain

Welcome to SkyDOT!

This website provides online access to various astronomical data sets related to time domain work. It was conceived within and grew out of the RAPTOR project. We hope to gradually expand the data coverage as well as capabilities of SkyDOT and eventually turn it into a convenient tool for obtaining, evaluating and even analysing sky monitoring data. Check for updates.

The LINEAR Survey Photometric Database has been released on January 9, 2012.
To access the web interface, please follow the link below.

LINEAR Survey Nearly 5 billion photometric measurements for more than 24 million objects covering a time baseline of about 7 years. SDSS identifications for most objects are provided.
Northern Sky Variability Survey An extensive variability survey of the sky north of DEC = −38 degrees with daily time sampling and one year of baseline. The database provides a cone search interface and online access to light curves.
Catalog of RR Lyr variables from NSVS 1188 RRab stars with well-defined light curves. Metallicities are determined for 589 stars by the Fourier parameter method and by the relationship between period, amplitude, and [Fe/H].
Catalog of red AGB variables from NSVS 8678 slowly varying stars with infrared colors corresponding to the evolved asymptotic branch population.

We provide a browsing and SQL interface to Northern Sky Variability Survey (NSVS) and the photometric database from LINEAR survey.

NSVS was conducted in the course of the first generation Robotic Optical Transient Search Experiment (ROTSE-I) . The survey covers 2/3 of the sky to optical unfiltered magnitude of 15.5 and provides between 100 and 400 good measurements per object.

The MIT Lincoln Laboratory (MITLL) operated the Lincoln Near-Earth Asteroid Research (LINEAR) program since 1998 to search for asteroids.

We provide an ftp download area for users who prefer to obtain the data as flat files and perform computationally intensive processing on their local machines. Currently online database is primarily for browsing and limits the amount of data that can be accessed at once.

For questions/bug reports on SkyDOT database please contact:

Przemek Wozniak (

Mailing address:
Los Alamos National Laboratory
Los Alamos, New Mexico 87545