Although it had been rapidly brightening since discovery, the outburst stopped in mid December. Now at peak. It keeps the good condition until March. Because the nuclear magnitude brightened 3 mag in mid December, visual observers recently reported it as bright as 9.6-11.3 mag. A new comet, but northern people can never see it again.
Southern observers can keep observing it while fading out.
It was a bit fainter than the ephemeris. It is probably about 12 mag already. It keeps the same apparent location until April. It will be higher gradually. Souther observers cannot see it until late March.