Observing geometry of C/2018 F4 varying with time during our observations from LOOK (blue) and UH 2.2 m (red). Here, we plot (a) heliocentric and geocentric distances, (b) phase and solar elongation, (c) position angles of antisolar direction (θ _−⊙) and negative heliocentric velocity projected onto the sky plane (θ _{− V} ), and (d) plane angle of the comet’s orbit.