A catalog of hundreds of free-floating planetary-mass objects collected from the literature

This catalog contains free-floating planetary-mass objects discovered via direct imaging that I found in a literature search with the help of SAO/NASA ADS.

Free-floating planetary-mass objects are widely considered objects with a mass below 13 Jupiter masses that do not orbit any star, brown dwarf or stellar remnant. These objects are however mentioned in the literature with many different names, depending on the authors and the context. Such names can be isolated planetary-mass objects (iPMOs), free-floating planets, free-floating planetary-mass objects, free-floating planetary-mass brown dwarfs, low-mass brown dwarfs, sub brown dwarfs and many more similar names.

I use the following criteria for free-floating planetary-mass objects:

-The mass must be below 13 Jupiter masses

-The mass+error must be below 20 Jupiter masses

-The object is not allowed to orbit a star, brown dwarf or stellar remnant. It is allowed to orbit or co-move with another free-floating planetary-mass object

-The object should be published in a peer-reviewed paper

My catalog contains 472 objects or candidate objects. Previous attempts collected 57 (Limbach et al. 2021) and 80 free-floating planetary-mass objects (according to Caballero 2018 these were collected by Béjar & Martín 2018), making my catalog several times larger than previous compilations.

I provide information about the following parameters:

-position, membership of stellar group, variability, multiplicity, IR excess

-derived parameters, such as mass and radius

-photometry, such as near-infrared JHK, CatWISE (Marocco et al. 2021), Spitzer and NOIRLab Source Catalog DR2 (Nidever et al. 2021)

-astrometry: parallax, proper motion and radial velocity

-references as bibcodes

Note about infrared excess: I also provide information about the infrared excess indicative of a circumstellar disk for these objects. This information is partly taken from the literature, but also partly my own assessment. This list reveals several new candidates with possible infrared excess, most of them found with Allwise W3 excess and located in Upper Scorpius. Most of these free-floating planetary-mass objects for which I find IR excess were discovered by Miret-Roig et al. 2022. See also the attached figure.

I do not claim that all values in this list are correct. Mistakes happen. Researchers using this list should double-check the values in this list before using them for their research.