Photometric observations made in 2006 gave a rotation period of about 25 hours.

Photometric observations made in 1987 gave a rotation period of either 6.78 or 5.4 hours.

Photometric observations indicate that its surface is made of water ice.

In 1877 he began making photometric observations of the planets and their atmospheres.

In 1967, the 12 inch telescope at the observatory made its last professional photometric observations.

Photometric observations collected during 2006-08 were used to measure time variations of the asteroid light curve.

Photometric observations of this asteroid give a light curve with a period of 10.248 hours.

Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours.

Photometric observations of this asteroid gave a light curve with a period of 13.623 hours.

The second telescope is a 0.6 metre reflector for photometric observations.