V598 Sco is an active dwarf nova and listed in VSX as a UG star, range 14.9 - 17.0: V. [vsnet-chat 9283] lists V598 Sco as a Z Cam star.
V598 Sco has been on my list for a number of years. On May 2 during an outburst I noticed a fading, then returned to normal brightness. A second fading occurred approx 3h 46 min later, which I observed back to normal.
With a new outburst on May 18, I made 1-minute observations for 3h 29 minutes and caught another eclipse. Kept observations ongoing throughout the night and caught a second eclipse.
The eclipse period was 3h 45 minutes. The first eclipse duration was 12 minutes and the second eclipse was 10 minutes.
First eclipse:
V598 SCO 2460814.0236 15.20 V598 SCO 2460814.0243 15.10 V598 SCO 2460814.0250 15.10 V598 SCO 2460814.0257 15.20 V598 SCO 2460814.0264 15.20 V598 SCO 2460814.0271 15.20 V598 SCO 2460814.0278 15.20 V598 SCO 2460814.0285 15.20 V598 SCO 2460814.0292 15.20 V598 SCO 2460814.0299 15.30 V598 SCO 2460814.0306 15.30 V598 SCO 2460814.0313 -15.30 V598 SCO 2460814.0319 -15.30 V598 SCO 2460814.0326 -15.40 V598 SCO 2460814.0333 -15.40 V598 SCO 2460814.0340 -15.40 V598 SCO 2460814.0347 -15.40 V598 SCO 2460814.0354 -15.50 V598 SCO 2460814.0361 -15.50 V598 SCO 2460814.0368 -15.50 V598 SCO 2460814.0375 -15.50 V598 SCO 2460814.0382 -15.50 V598 SCO 2460814.0389 -15.50 V598 SCO 2460814.0396 15.60 V598 SCO 2460814.0403 15.60 V598 SCO 2460814.0410 15.40 V598 SCO 2460814.0417 15.40 V598 SCO 2460814.0424 15.30 V598 SCO 2460814.0431 15.30 V598 SCO 2460814.0438 15.20 V598 SCO 2460814.0444 15.20 V598 SCO 2460814.0451 15.10 V598 SCO 2460814.0458 15.10
Second eclipse:
V598 SCO 2460814.1833 14.90 V598 SCO 2460814.1840 15.00 V598 SCO 2460814.1847 15.10 V598 SCO 2460814.1854 15.10 V598 SCO 2460814.1861 15.10 V598 SCO 2460814.1868 15.20 V598 SCO 2460814.1875 15.30 V598 SCO 2460814.1882 -15.30 V598 SCO 2460814.1889 -15.30 V598 SCO 2460814.1896 -15.30 V598 SCO 2460814.1903 -15.30 V598 SCO 2460814.1910 -15.30 V598 SCO 2460814.1917 -15.40 V598 SCO 2460814.1924 -15.40 V598 SCO 2460814.1931 -15.40 V598 SCO 2460814.1938 -15.40 V598 SCO 2460814.1944 -15.40 V598 SCO 2460814.1951 15.50 V598 SCO 2460814.1958 15.50 V598 SCO 2460814.1965 15.40 V598 SCO 2460814.1972 15.40 V598 SCO 2460814.1979 15.30 V598 SCO 2460814.1986 15.30 V598 SCO 2460814.1993 15.10 V598 SCO 2460814.2000 15.00 V598 SCO 2460814.2007 15.00 V598 SCO 2460814.2014 14.90 V598 SCO 2460814.2021 14.90 V598 SCO 2460814.2028 14.90