[1] The carbonaceous C-type asteroid has a longer-than average rotation period of 55.5 hours and measures approximately 40 kilometers (25 miles) in diameter.
[2] Nora is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.
[1] This minor planet was likely named after Nora Helmer, the heroine in the play A Doll's House (1879) by Norwegian poet Henrik Ibsen (1828–1906).
In March 2018, a rotational lightcurve of Nora was obtained from photometric observations by Tom Polakis at the Command Module Observatory (V02) in Arizona.
[10] The result supersedes previous observations by European astronomers at the La Silla, Haute Provence and Hoher List observatories during the 1990s which gave two periods of 24 h and 34.4±0.5 h with an amplitude of 0.2 and 0.08±0.02 magnitude, respectively (U=1/2−).