[1][4] The best-rated rotational lightcurves of Biarmia were obtained from photometric observations at the Etscorn Observatory (719), New Mexico, and at the S.O.S.
Lightcurve analysis gave a rotation period of 5.468 and 5.4700 hours with a brightness amplitude of 0.22 and 0.20 magnitude, respectively (U=3/3).
[10][13] According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Biarmia measures between 21.59 and 38.567 kilometers in diameter and its surface has an albedo between 0.1436 and 0.455.
[5][6][7][8][9] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, a stony albedo of 0.2190 and a diameter of 31.14 kilometers based on an absolute magnitude of 9.80.
This legendary territory probably refers to the Russian region around Arkhangelsk on the White Sea near the Finnish border.