(meteorobs) new comets and meteor showers of the begin of 2013

[Roberto Gorelli]

On Thu, 15 Aug 2013 05:24:51 +0800
  "Jin Zhu" <jinzhu at bjp.org.cn> wrote:
> Hello Roberto,
> 
> Any new update about the possible meteor shower from C/2013 G5 
>Catalina? radiant? maximum time?
> 
> Thanks, Jin

Hello Jin,

the last data on orbit of C/2013 G5 Catalina are here:

http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=c&o=CK13G050

I calculated the related meteor shower on its:

geocentric speed       27.68-27.78 km/sec

heliocentric speed     41.87 km/sec

MOID   0,067-0.068 AU

date of maximum   17.2 August or 18.2 August

radiant          15 H 45M - 15 H 54 M       + 66,6°-66,7°   then in
Draco between Boote and Ursa Minor

the difference come from different method for calculate data of meteor
shower

Warning: the MOID being of about 9 milions of km make the existence of
the meteor shower near impossible
for a comet in parabolic orbit,
perharps you has read the topic on August Eridanids and 273P 
Pons-Gambart?
But we cannot known before if a surprise it's ready or not!
Best greetings.
Roberto Gorelli

P.S.: it's possible that peoples taking photos for Perseids took too 
the rise of the brillant nova in Delphinus if yes it's very important 
that magnitudes and timings shall be send to AAVSO or other groups 
that work this type of data.