[1] In January 2017, the so-far best-rated rotational lightcurve of Ursula was obtained from photometric observations by American astronomer Frederick Pilcher at the Organ Mesa Observatory (G50), New Mexico.

Lightcurve analysis gave a rotation period of 16.899 hours with a brightness amplitude of 0.11 magnitude (U=3).

[5][7][8] Observations of an occultation on 15 November 1984, produced six chords indicating an estimated diameter of 216±10 km.

[9] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0494 and adopts a diameter of 216.1 kilometers based on an absolute magnitude of 7.21.

All of these asteroids have low numbers between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.