[13] Near its closest approach to Earth of 3.25 lunar distances on 8 June 2014, the asteroid crossed the celestial equator, making it a northern hemisphere object.

[4][5] Radar observations at Goldstone suggest that the object is elongated and irregular in shape, with its long axis measuring at least 370 meters (1,200 feet).

Lance Benner suspects it to be a contact binary, composed of two merged objects forming a single asteroid with a lobed shape.

[12] Photometric observations by astronomers with the Mission Accessible Near-Earth Objects Survey (MANOS) and subsequent evaluation by Brian Warner's Collaborative Asteroid Lightcurve Link, determined that 2014 HQ124 has a rotation period of at least 16 hours.

[15] Similar events, where other 100+ meter diameter asteroids have or will soon pass less than 4 LD from Earth, include: