[9] On 3 July 2041, Jürgenstock will approach the 200-kilometer sized asteroid 7 Iris at a distance of 6,700,000 km (0.045 AU) with a relative velocity of 5.66 km/s.

[11][12] Occultations are typically an excellent method to determine a minor planet's dimension (cross-section) by exactly measuring the duration of the event.

[8]: 23 In September 2007, a rotational lightcurve of Jürgenstock was obtained from photometric observations by Federico Manzini at the Sozzago Astronomical Station (A12) in Italy.

Lightcurve analysis gave a rotation period of 2.80956±0.00005 hours with a brightness variation of 0.11 magnitude, indicative of a spherical rather than elongated shape (U=3).

[7] In July 2014, a similar period determination of 2.810±0.001 hours and an amplitude of 0.10 magnitude was made by Brian Warner at the Palmer Divide Station (U82) in California (U=3-).