MGAB-V251: polar or quiescent SU UMa

From ZTF data. Porb=0.0902439(2) d. One maximum per cycle.

073305.327 +233658.12 (2000.0) Gaia_DR2_866639845312806912 plx=3.371(1.099) dismod=7.4 pmra=-1.836(1.090) pmdec=3.420(0.852) G=19.808 BP=19.820 RP=19.149 073305.326 +233658.12 (2000.0) Gaia_EDR3_866639845312806912 plx=-(-) dismod=- pmra=-(-) pmdec=-(-) G=19.688 BP=19.865 RP=19.269