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We present the light curve of HS 0229+8016 between 2006 and 2019, which shows that the star varies between magnitudes 13.4 and 15.1. There were episodes lasting up to hundreds of days during which distinctive 0.6mag cyclic variations were apparent, each lasting ~9.5 days. Observationally, these were very similar to the ‘stunted’ outbursts seen from time to time in several nova-like cataclysmic variables, such as UU Aqr. There were two intervals of up to 166 days when these stunted outbursts appeared to reduce or even stop. These coincided with the system being up to ~0.7mag fainter than usual. Previous workers have suggested that HS 0229+8016 might be a member of the Z Cam family of dwarf novae, but we can find no evidence of the characteristic dwarf nova outbursts and standstills at an intermediate brightness. Surveillance of HS 0229+8016 should be continued to understand more about the long-term behaviour of this system.

Observations at long infrared wavelengths by the Akatsuki spacecraft during 2015 December revealed the presence of a remarkable bow-shaped high-albedo atmospheric wave, elongated north–south and stretching over both hemispheres across a wide range of latitudes, up to 10,000km in length. Its velocity was nearly zero with respect to the surface, and its initial longitude placed it at the western side of one of the three highest regions of the planet. Amateur data at shorter infrared wavelengths recovered long, narrow N–S elongated waves or discontinuities in late 2016 and again during 2019–’20, but they showed typical velocities for that waveband, corresponding to synodic rotation periods of around five days. This short note reviews the Akatsuki data and more recent ground-based observations. Furthermore, it speculates whether waves could also have been generated by the possible surface volcanic activity first reported in BAA observations during 2017.