The asteroid was discovered on 9 January 1934, by Italian astronomer Luigi Volta at the Observatory of Turin in Pino Torinese, northern Italy.

[14]: 23 In September 2012, a first rotational lightcurve of Marconia was obtained from photometric observations by Robert Stephens at his Santana Observatory (646) in California.

[12] Conversely, another lightcurve inversion study by an international collaboration gave a longer spin rate of 32.1201 hours.

[6][7][8][9][10] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0527 and a diameter of 43.90 kilometers based on an absolute magnitude of 10.6.

[4] This minor planet was named after Guglielmo Marconi (1874–1937), an Italian electrical engineer, pioneer and inventor of radio.