 A 2017-WISE-study dedicated to Mars-crossing asteroids determined a diameter of 5.51 kilometers despite a higher albedo of 0.305.The "Collaborative Asteroid Lightcurve Link" assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 5.74 kilometers based on an absolute magnitude of 13.61, while the Johnston's Archive estimates a diameter of 7.54 kilometers for the primary.With a diameter of 5.5 kilometers, "Gavrilin" is one of the smallest "sizable" Mars-crossers (5–15 km).