Wow! Another new comet (a first timer). This comes from spaceweather.com:
Newly-discovered Comet Machholz-Fujikawa-Iwamoto (C/2018 V1) has sprouted two tails. A photograph from Nov. 18th shows the comet moving through the star fields of Virgo at magnitude 9.0 (:
So, why the fuss about two tails? Almost all comets have two tails. The sun-warmed nucleus of a comet spews a mixture of dust and gas into space. Quickly, the mixture separates into two distinct tails: The gaseous “ion tail” is pushed straight away from the sun by solar wind. The weightier dust tail resists solar wind pressure and aligns itself more or less with the comet’s orbit. In the above video, the long ion tail points up and left; the stubby dust tail points up and right.
Comet Machholz-Fujikawa-Iwamoto is plunging toward the sun on a nearly-parabolic orbit that will take it just inside the orbit of Mercury. Closest approach to the sun (0.38 AU) is on Dec. 3-4; closest approach to Earth (0.67 AU) is Nov. 27th. Amateur astronomers can find it–and its two tails–shining like a star of 8th magnitude in the constellation Virgo in the pre-dawn sky (see details below).