RX J1002.2–1925. Left, top: flux-calibrated low-resolution spectra on 24 December 1992 and at orbital maximum and minimum on 1 March 1997. Cyclotron harmonics are indicated. Left, second from top: Balmer-line radial velocities of the narrow and broad components from spectra of 1 and 2 March 1997. Left, third from top: spectral flux in the B band of 1 and 2 March 1997 in units is 10⁻¹⁶ ergs cm⁻² s⁻¹ Å⁻¹. Left, next three panels: soft X-ray light curves of 1990, 1995, and 2001. Right, top: overall nonsimultaneous SED. Right, second from top: cyclotron spectra on 24 December 1992 and 1 March 1997 with models for a field strength of 33 MG. Right, next four panels: samples of optical light curves taken in WL, illustrating the variability of primary and secondary minima. Left, bottom: O − C diagram for the primary minimum, from light curves with peak orbital WL AB magnitude w ≲ 18. Right, bottom: O−C for the primary minimum vs. w. The photometric phase is from Eq. (8).