New Photometric Observations of the Binary Near-Earth Asteroid (137170) 1999 HF1

Photometric observations of the binary near-Earth asteroid 1999 HF1 were made during 6 nights in the interval 2014 May 21 to June 18 using the Cassegrain telescope at the Bucharest Astronomical Institute (UAI code: 073). These observations confirm that the asteroid's lightcurve has two components. The short period variation was estimated to P = 2.5662 ± 0.0034 h, close to the value 2.3191 hours found in the literature.