NSVS 708833 = 1RXS J072816.3+751559
https://www.aavso.org/vsx/index.php?view=detail.top&oid=228513
A few minutes ago I had a look at the latest ASAS-SN Sky Patrol data (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) and noticed an outburst:
NSVS708833 20190120.422 13.94g ASN
NSVS708833 20190122.446 13.95g ASN
NSVS708833 20190123.462 13.89g ASN
NSVS708833 20190124.397 13.81g ASN
NSVS708833 20190125.428 12.67g ASN
NSVS708833 20190126.192 12.60g ASN
NSVS708833 20190126.375 12.60g ASN
NSVS708833 20190129.317 12.71g ASN
ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/light_curves/8db098ce-b023-488d-a81d-1eba2c0749…
*** Precise astrometry, spectroscopy, and multiband/time-resolved photometry are urgently required. ***
Clear skies,
Patrick