[16] During closest approach to Earth the asteroid reached about apparent magnitude 10,[17] which is much too faint to be seen by the naked eye.

Even at peak brightness, the asteroid was a challenging target for amateur astronomers with small telescopes, best seen in the Northern hemisphere.

[7][20] The close approach was studied with radar using Goldstone, the Green Bank Telescope,[15] and the Arecibo Observatory.

[15] Bistatic radar images created with the Green Bank Telescope had a resolution of 4 meters (13 ft) per pixel.

[5] The high orbital inclination and eccentricity suggest 2015 TB145 may be an extinct comet that has shed its volatiles after numerous passes around the Sun.

[23] If meteoroids related to this asteroid were to cross Earth's path, the radiant is expected to be near Northern Eridanus.