TNS Newsfeed

Here we will notify about new features, modifications, open issues, and any general news and remarks...


We have updated the interactive spectra plots.

The rest-frame wavelengths are now shown on the bottom x-axis (observed frame at the top);

the elements checkboxes (for over-plotting their lines) have been revised, now enabling to select separately the forbidden lines.

To view the spectra on separate plots, click the figure icons in the spectra list (below the aggregated plot).


The TESS FOVs are now maintained on the TNS, so that notifications can be received whenever a reported transient coincides with the current TESS FOV.

As with previous catalogs, on your "My Account" page, check the TESS-SectorX checkbox for receiving live notifications via email.

Every ~1 month there's a shift of sector and a new sector will become active (you may check the schedule here:

Please make sure to mark each new sector whenever it becomes available. 


On Jan 28 we increased the (cone search) radius threshold for determining coinciding objects from 3 to 5 arcsec.

This should decrease the amount of situations in which a new object is created (the separation from an existing object exceeds the threshold), but then has to be united with an existing event.

The new threshold of 5" also serves as the default cone search radius on the home page and search page, whenever a query by coordinates is performed.


We have added a full set of python sample codes, kindly written by Nikola Knezevic, 

which can be used to help develop the required scripts to work with the TNS.

The codes cover all the existing APIs:

AT/Classification bulk reports (examples are provided for both JSON and TSV formats),

file uploads, update of proprietary end date, search and get object details.

The sample codes (PHP+Python) can be downloaded from the help page, under the relevant APIs sections.


We are very glad to inform that all the TNS discovery & classification reports (those that are the formal
"discoverers"/"classifiers") are now officially indexed on the NASA ADS system.

The bibcodes of the TNS reports begin with either YYYYTNSTR... or YYYYTNSCR...; TR standing for Transient (discovery)
Report, CR standing for Classification Report. The reports are arranged as daily aggregates per the reporting group and
reporter name/s (author/s).

Querying the ADS by object name (e.g. 2016A) or author/s retrieves any relevant TNS reports, so they can be officially
related to and cited.

On the ADS - for an index of a single object, clicking the "Electronic On-line Article" directs to the
discovery/classification certificate on the TNS. If an aggregate report for multiple objects, clicking the "On-line
Data" directs to the aggregate report on the TNS, which includes links to all objects' pages and certificates. 

A total of ~1800 ADS indexes are now (Jun 2017) in place for all TNS reports since the begining of operation in Jan 2016.


The KEGS-C14 catalog was added to the TNS, consisting of ~14500 galaxies (PI: Rest).

If willing to receive email notifications whenever a newly reported transient is found to coincide with a galaxy of this catalog,

please remember to check the KEGS-C14 checkbox at the bottom of the MY ACCOUNT page.

We added a display of the PS1 color stamp on the Object page, next to the SDSS thumbnail.

The PS1 stamp (if within the footprint) should become visible within ~1 hr after the appearance of a new object.


Improved cone search (on both the search page and in reporting of a new object) to handle computer truncation/rounding problems.

Corrected update of object discoverymag & discmagfilter when object switches to being public.


The TNS now manages LIGO GW events, creating for every newly detected event skymaps showing the known public TNS transients that are found to be within the localization contours.
The data of the new events are accessible only to members of groups that are part of the LV-EM MOU.
See the explanations of LIGO GW Events on our help page.