It was discovered by Belgian astronomer Eric Elst at ESO's La Silla Observatory site in northern Chile on 12 August 1994.
[6] The asteroid was named for Belgian scientist Martine De Mazière.
[2] Demazière orbits the Sun in the inner main-belt at a distance of 2.1–2.8 AU once every 3 years and 10 months (1,403 days).
[5] In November 2010, a rotational lightcurve of Demazière was obtained from photometric observations taken at the Palomar Transient Factory in California.
Mazière has also assessed the post-Pinatubo NO2 reduction and recovery, using spectroscopic observations in the UV and visible made at the Swiss Sphinx Observatory (Jungfraujoch) over a period of 10 years.