https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/24705Hi all,
the absolute magnitude of C/2013 US10 appears to be about 6 to 7.
This is well above the Bortle limit of survivability for its perihelion
distance of 0.82AU, so I doubt it will disintegrate.
Very dusty objects have a slow rate of brightening, so assume n=3 and a peak
brightness of magnitude 6, rather than 4-5.
(but I hope I'm wrong!)
on another note C/2015 G2 MASTER "appears" to be dynamically new, after all!
I estimate its absolute magnitude at 8.5
and its risk of disintegration is about the same as C/2013 V5 Oukaimeden
(which did survive but suffered mass loss at perihelion last September)
Comet MASTER looks healthy at the moment and is developing nicely.
Jakub - time to update the bortle line graph of dynamically new comets
有人說會瓦解
本來希望說能拍看看