The light curve is stable, though the brightening and fading is rather
rapid along a 18.5 log r formula.
Kazuo Kinoshita's calculation revealed that it passes close by Earth
and Jupiter frequently in 20th and 21st century. But the orbit does
not change so much. So the light curve will be similar in any
appearance.
However, comparing the light curves in 1998 and 2005, there are some
slight differences. The light curve was symmetric to the perihelion
passage in 2005, but it became brightest about two weeks before the
perihelion passage in 1998. The maximum brightness was similar in both
appearances, but it was brighter in 1998 before or after the
perihelion passage.