Light curves of SDSS J1630+3119 from the CSS, Pan-STARRS, and ZTF surveys. The raw data are shown with errors in different colours. The CSS continually monitored SDSS J1630+3119 for more than eight years (170 epochs) at the V band beginning on 6 July 2005, in which the light curve means that there is no apparent change in the optical continuum within large measurement errors. Pan-STARRS has performed another extensive monitoring since 9 June 2009, and the magnitudes of 68 epochs confirm the latter half of the light curve observed by the CSS. After approximately five years, SDSS J1630+3119 was monitored again by the ZTF and has 18 new observations with a zr filter. The light curves with high photometric accuracy from the Pan-STARRS and ZTF suggest that SDSS J1630+3119 does not have significant long-term variability in the optical and near-infrared bands.