logo_ssdc_sky_explorer_header.png Version 3.0
Privacy Policy
Login
Feedback

Fermi LAT photon event and spacecraft data query and online data analysis

The data server is now loaded with IRFs Pass8 photon data. It is highly recommended that users read the Pass8 Usage Page before proceeding with LAT Pass8 analysis and use the last version of the analysis software (Fermitools) available here


The Photon database currently holds 1838795729 photons
collected between 04/08/2008 15:43:36 UTC and 10/05/2025 03:24:03 UTC
( 239557417 and 768540248 seconds Mission Elapsed Time (MET)).


NOTE: For queries encompassing the whole sky (or close to it), please use the pre-generated Weekly Allsky Files.


Enter your e-mail address to receive notification when done
Search by Name
SSDC Name Server SIMBAD NED
Coordinates
RA-Dec
Galactic Coordinates
Ecliptic Coordinates

... and/or search by date?



If you do not enter anything, it will return results from the past 6 months.
For Gregorian dates, please enter in the format YYYY-MM-DD HH:MM:SS, with the start and (optional) end time separated by commas.
For MET (Mission Elapsed Time), enter any integer values >= 0, separated by commas.
If you would like to search from the beginning of the mission, put in START instead of a start value.
If you would like to search up until the most recent point, put in END instead of an end value.

... and/or search by energy?

MeV
Enter the minimum and (optional) maximum energy, separated by a comma.
(By default, only data between 100 MeV and 300 GeV is returned.)


... class type


Enter class


FERMI Data

Photon Data Spacecraft Data

FERMI Online Data Analysis

GTLIKE help

Aperture Photometry Lightcurve     BinSize (days) : (Not Available)



For any request please contact Fermi Helpdesk at the following link