148780 Altjira

148780 Altjira is a binary classical Kuiper belt object (cubewano). The secondary, S/2007 (148780) 1, is large compared to the primary, 140 km vs. 160 km. The Altjiran lightcurve is quite flat (Δmag<0.10), which is indicative of a "quasi-spherical body with a homogeneous surface".

The satellite's orbit has the following parameters: semi-major-axis, 9904 ± 56 km; period, 139.561 ± 0.047 days; eccentricity, 0.3445 ± 0.0045; and inclination, 35.19 ± 0.19°(retrograde). The total system mass is about 4$$ kg.

It was named after the Arrernte creation deity, Altjira, who created the Earth during the Dreamtime and then retired to the sky.

Altjira may be an unresolved hierarchical triple system.