  New Online Database of Symbiotic Variables includes several poorly
characterised objects and candidate symbiotic stars, not only in the Milky Way
but also in other galaxies. The goal of the research presented in this paper
was to reveal the nature of 2MASS J07363415+6538548, the object discovered as
an X-ray source in the field of NGC 2403, and tentatively classified as a
symbiotic candidate or a cataclysmic variable. By analysis of available
photometric data from ground-based surveys, together with high precision
photometry from TESS, remarkable astrometric measurements of the Gaia
satellite, and observations of other surveys spanning from X-rays to infrared,
we have found that the object is not a symbiotic star nor a cataclysmic
variable but rather an active K-type dwarf. The star is located in the distance
of 415 pc, has an effective temperature of 4 275 K, luminosity of 0.14
L$\odot$, a mass of 0.7 M$\odot$, and radius of 0.7 R$\odot$. It has a
rotational period ~ 3 days and is a strong X-ray source with the X-ray
luminosity of ~ $10^{30}$ erg/s. Gyrochronology and isochrone fitting confirmed
that the star is young.
